SCAN Web User's Guide
Contents
 
 
 
 
 
 
 
 
 
 
Introduction

SCAN Web is the latest Road/Runway Weather Information Systems (RWIS) user interface from Surface System's, Inc. SCAN Web uses standard Internet technologies to display data from your RWIS. These technologies include the Transmission Control Protocol/Internet Protocol (TCP/IP), the Hypertext Transfer Protocol (HTTP), the Hypertext Markup Language (HTML), and Active Server Pages (ASPs). These standards form the foundation of what has become commonly known as the World Wide Web (WWW). SCAN Web makes use of these standard technologies to display SCAN RWIS data using widely available HTML browsers such as Netscape Navigator and Microsoft Internet Explorer.

SCAN Web provides powerful graphical data display pages. Users can easily select various data views to display produce either concise summary views or detailed RWIS data. Site Summary, Site Status, and historical data pages are available to enhance operational effectiveness. In addition, SCAN Web integrates current video images when sites are configured with video cameras. SCAN Web can also display weather and pavement forecasts from SSI's SCAN*Cast forecast service.

The purpose of this document is to describe standard SCAN Web functionality. Customized pages and/or features will not be covered by this document.

How Does SCAN Web Work?

SCAN Web ties Web addresses, or Uniform Resource Locators (URLs), to the RWIS data collected in your SCAN SQL Server database. Your SCAN Web site is a collection of RWIS data views that are displayed on web pages in your web browser. SCAN Web uses Active Server Pages (ASPs) to dynamically build each web page displaying the latest data collected by your RWIS. Each SCAN Web page also contains hyperlinks that allow you to move easily between pages to view your all of your RWIS data in various formats.

Accessing SCAN Web

Accessing the data from your SCAN Web Server can be accomplished two ways. The fastest way is via a network connection. Deploying your SCAN Server on a local area network is by all means the preferred way to distribute your RWIS data to the people who need it the most. To access your SCAN Web site from a network, simply open your Internet browser and enter the name of the SCAN Web Server in the Address box of your browser. Your initial SCAN Web page should be displayed when you enter this name and press return. If you get an error message, you may need to insert an entry for the web server in the Hosts file or you can try entering the Internet Protocol (IP) address of the web server. Please contact your System or Network Administrator if you experience problems accessing the web site across your network.

You can also provide dial-in user access using a phone line and a remote access service (RAS) dial-up connection. Users would require a dial-up connection and a modem on their personal computer. Dial-in lines and modems dedicated for user access would also be required on your SCAN Server. Once users connect to the SCAN Server they can use their browser of choice to access the SCAN Web user interface as if they were on a network.

Contact your Information Services or System Administrator for more information on accessing your SCAN Web Server.

To set SCAN Web as your default home page, set the SCAN Web Home page as the default "Home" page in your browser's preferences. If you don't want the SCAN Web page to be your home page and you don't want to type in the name every time, you can add the page to your Favorites folder. The method for setting preferences differs slightly between Netscape and Internet Explorer so please refer to your browser's on-line documentation for details. Once the SCAN Web page is added to your Favorites list, you can access the page at any time by selecting the Favorites pull down menu and selecting the SCAN Web page.

Contacting SSI

Our corporate office hours are between 8:00am - 5:00pm U.S. Central Time, Monday - Friday (excluding holidays).

If you require technical support concerning this product please call 1-(800) 654-6867 and ask for Customer Service or send an e-mail to SCANWeb@surface.com.

For additional product information or to speak with a sales representative please call 1-(800) 325-7226 or send an e-mail to Mktg@surface.com.

Our mailing address is:

        Surface Systems, Inc.
        11612 Lilburn Park Rd.
        St. Louis, MO 63146-3535

You can also reach us by FAX at 1-(314)569-3567.

Be sure to visit our corporate web site at http:\\www.ssiweather.com.

SCAN Web Navigation Bar

The navigation bar is displayed on the left side of the screen and provides a standard location for the majority of SCAN Web links. The navigation bar has been split into five main sections: SCAN Web, Maps, Summaries, Summary, and Site. Different sections will be displayed based on the page you are currently viewing. Most SCAN Web pages also contain embedded links that provide additional navigation capabilities.

The remainder of this document will describe the each menu section and provide a detailed description for each SCAN Web page.

SCAN Web Menu Section

The SCAN Web menu section will be displayed on all pages. It contains links to system level pages such as the SCAN Web Home page, the SCAN*Cast Summary page, the Camera Summary, the Bridge Sprayer Summary, and the Slide Show page (when configured). You may also request other links to be added to this section such as a link to a state DOT home page.

Home Page

The SCAN Web home page is also referred to as the main menu page. The default SCAN Web Home page will display your registration information and copyright and software license information. The Home link provides an easy way to return to your SCAN Web Home page. This page can be modified to display custom information for your installation if requested. The Home page should be used as a starting point for each SCAN Web session and provides access to all RWIS data.

SCAN*Casts

This link provides a central location for all SCAN*Casts delivered to your SCAN Server. A SCAN*Cast is an optional forecast service provided by Surface Systems' staff of meteorologists. If you subscribe to the SCAN*Cast service, your SCAN*Casts will be delivered directly to your SCAN Server for easy access. The forecast covers a 24-hour forecast delivered twice a day with additional evening forecasts during snow/ice situations. Three (3) day extended outlooks can also be ordered for delivery on Friday afternoons.
Refer to the SCAN*Cast description provided in the Site Data menu section for further SCAN*Cast details.

Cameras

The Cameras link provides a central location for all of your site video images that are collected by your SCAN Server. This link will only be displayed when cameras are installed as part of your SCAN system.  The default thumbnail image for each site will be displayed.  Simply select the image to display the desired camera image.  Please refer to the Camera page description provided in the Site Data menu section for more details.

Bridge Sprayers

The Bridge Sprayers link provides a central location for all of your bridge sprayers that are configured on your SCAN Server. This link will only be displayed when bridge sprayers are installed as part of your SCAN system. Please refer to the Bridge Sprayers section for more details.

Devices

The Devices link provides a central location for all of your devices that are configured on your SCAN Server. This link will only be displayed when devices are installed as part of your SCAN system. Please refer to the Site Status section for more details.

Slide Show

When configured, the Slide Show page displays a sequence of predefined SCAN Web pages. The same set of web pages will be displayed for all users.

Related Links Menu Section

The Related Links menu section will be displayed on all pages. It contains links to this User's Guide, the Glossary, the Disable/Enable Java Links option, and the SCAN Web Administration Site

User's Guide

The User's Guide is provided for information on the use of SCAN Web and provides a quick link to this document.

On-line Glossary

SCAN Web also provides an on-line glossary which helps identify each data item as well as important RWIS terms. Simply select a term or column heading to display a brief description.

Disable/Enable Java Links

Throughout SCAN Web links are provided to historical surface data, SCAN*Casts, and maps. Due to varying download speeds that are available (dial-up and network), SCAN Web allows users to specify whether a link to these three types of pages should link directly to web page that uses embedded Java applets or to a page that does not use Java applets. Pages that use Java applets require more download time than most other web pages. If you are accessing SCAN Web via a dial-up connection you may wish to disable the default Java links. Once disabled, any embedded links (such as History links) that linked to a Java page will then link direct to a table view. You will still be able to display graphs and maps; however, you will now link to a table view page by default. In most cases, once a page containing a Java applet has been cached by your browser it will display much faster.

The Disable/Enable Java link provides users the capability to change the default behavior of embedded links between Java pages and table view pages. To view any SCAN Web page that uses Java, you must be using a Java enabled browser and have the Java functionality properly configured and enabled.

Additional Links

Additional links can be added to the SCAN Web menu section for any URL address by contacting your SSI representative.

Maps Menu Section

The Maps menu will be displayed if your SCAN Web configuration contains any regional, airport, or site maps. SCAN Web maps use embedded Java to display color-coded sensor locations and information collected by your RWIS providing a quick and easy overview of the current weather conditions on a regional or site basis. Map pages will automatically refresh every six minutes.

All maps described in this section use embedded Java applets. This menu section is not displayed if you have disabled your Java links.

Regional Maps

Regional maps are designed to provide a graphical overview of a given area of operations such as a state, district, or county. Each RWIS site is represented by a triangle symbol and is color-coded based on the "most critical" sensor at the site. If all surface sensors at the site are reporting identical statuses the sensor with the lowest surface temperature will be displayed. Refer to the SCAN Web glossary for the list of surface statuses and their order of criticality (from most critical to least critical).

To identify a site, simply move your mouse over the triangle and a label will be displayed showing the site name and the date and time of the data for that icon. You may view detailed information by left clicking on the site's triangle. This will display a data window on the right side of the map that will display atmospheric and surface sensor data reported by the site.

Below the site data section, links will be displayed that control the types of sensors that will be displayed on the map. You can display maps that will only display deck (bridge or elevated) sensors, only runway (sensors installed on runways or taxiways) sensors, only roadway sensors, or all sensors (default). For example, you can configure a map to show the most critical bridge sensor for each site by selecting the Deck Sensors link. If a site does not have the selected sensor type it will be represented by a white triangle. This sensor filter will remain in affect until the All Sensors or the Sensors link located in the Summary menu section on the navigation bar is selected.

Links to the selected site's Site Status page, as well as, links to site maps configured for the site will also be provided. You may refresh the map by selecting the Refresh Map link. If data for a location has expired (by default, older than 2 hours), the symbol representing the location will be colored black.

Regional maps can also display data tags for a single data type (i.e. Air Temperature, Surface Status, etc.).  Simply select the data item you wish to display and a data tag will be displayed for each site provide the site is configured for and currently reporting the desired reading.

Airport Maps

Airport maps provide the same functionality as the regional maps described above; however, the region shown covers an entire airfield. In addition to displaying sites, an airport map will also show each surface sensor (represented by a circle) color-coded with the current surface status reported by the surface sensor. This provides airport customers with large airfields a convenient way to display all sites and sensors on one map. Users may select either site or sensor symbols to view detailed RWIS information for each location.

Site Maps

Site maps depict a single site location, typically a stretch of road, intersection, interchange, a close up view of an airport runway, or portion of an airfield. The background for a site map can be a digital photo, site graphic that depicts the site in detail, or a camera image collected from the site. If a camera image is used, the map background will update each time a new image is collected.

In addition to displaying sensor and site locations, site maps can also be configured to display data tags that display most atmospheric and sensor data for each symbol shown. These tags will "float" on top of each map and will only display data that is currently being reported for the site. Since data tags will change in size depending on the data displayed, you can temporarily move a data tag by using the left mouse button to "drag" the tag to a new location. Data tags will return to their original location each time the site map refreshes.

Atmospheric data tags will be colored gray when their data is current. Surface sensor data tags will be colored based on the surface status reported by the sensor when the data is current. All data tags will be colored black when the data being displayed has expired (by default, older than 2 hours). If data has expired, the symbol representing the location will be colored black. Data may expire due to communication problems between the SCAN Server and RWIS site or the polling interval for the expired site may need to be shortened.

All symbols and data tags will be displayed on site maps regardless of the type of sensor filter current in affect.

Summaries Menu Section

The Summaries menu section contains links to each Site Group Summary page that is configured on your SCAN Server. A site group can best be described as a logical group or subset of RWIS sites such as a state, district, city, or airport. By selecting a link from this section you will display a SCAN Web Site Summary page for the group selected.

Summary Menu Section

Once you have selected a group, the Summary Menu will be displayed on the navigation bar. This section provides links to the different types of summary pages provided by SCAN Web including Sites, Sensors, and Traffic. All summary pages will automatically refresh every six minutes and contain links to an on-line glossary that provides definitions for each column.

Sites

The Site Summary page provides a one-line overview for all sites contained in a given site group. The surface data shown on this page always reflects most critical sensor for each site. Refer to the glossary for a list of surface status conditions listed from most to least critical. The data displayed for each site includes the following data: (if the site is configured for the specified sensor type):

Location or Site Name (selecting the site name will display the Site Status page)
Surface Sensor Name
Data Collection Time for the site (will be black when data has expired)
Surface Status
Surface Temperature
Subsurface Temperature
Air Temperature
Relative Humidity
Dew Point Temperature
Precipitation Type
Precipitation Intensity
Rate of Precipitation
Visibility Distance
Average Wind Speed
Wind Direction
Barometric Pressure

Users can link to the glossary by selecting the column heading links to see a definition for each data item. The glossary will also provide details concerning whether a particular data item is supported for NTCIP sites.

Other links may be displayed in the right most column of the Summary page, such as maps, SCAN*Casts, history, and cameras. Links will only be displayed if a site supports the sensor type or function.

Surface Sensors

Sensor Summary pages show atmospheric data and surface data for each sensor meeting the current sensor filter criteria (i.e. All, Deck, Roadway, and Runway). The data displayed for each site includes the following data: (if the site is configured for the specified sensor type):

Location or Site Name (selecting the site name will display the Site Status page)
Data Collection Time for the site (will be black when data has expired)
Air Temperature
Dew point Temperature
Average Wind Speed
Average Wind Direction
Precipitation Type
Surface Sensor Name and Number
Surface Status
Surface Temperature
Subsurface Temperature
Freeze Point Temperature
Chemical Factor
Chemical Percent
Solution Depth
Ice Percent

Users can link to the glossary by selecting the column heading links to see a definition for each data item. The glossary will also provide details concerning whether a particular data item is supported for NTCIP sites.

Links specific to each surface sensor (i.e. History and SCAN*Cast) are listed in the right most column on each surface sensor row. Links that only pertain to a general site are listed in the right most column on each site's atmospheric row (i.e. Camera, Traffic, and Site Maps).

Cameras

The Cameras link located in the Summary menu section provides a central location for all of your site video images that are collected by the sites contained in your current summary group.  The default thumbnail image for each site will be displayed.  Simply select the image to display the desired camera image.  Please refer to the Camera page description provided in the Site Data menu section for more details.

Temperature Data Probes

The Temperature Data Probe (TDP) Summary page displays an overview of all site's that are configured with Temperature Data Probes in the current site group. This link will only be present if the current site group has at least one site configured with a TDP. The data displayed for each site on the TDP Summary page includes the following data:

Location or Site Name (selecting the site name will display the Site Status page)
Data Collection Time for the site (will be black when data has expired)
Air Temperature
Subsurface Temperatures (as recorded from just under the pavement surface to a depth of 72 inches)

Traffic

The Traffic Summary page displays an overview of all traffic sensors present in the current site group. This link will only be present if the current site group has at least one site configured with a traffic sensor. The traffic data displayed for each site includes the following data:

Location or Site Name (selecting the site name will display the Site Status page)
Data Collection Time for the site (will be black when data has expired)
Traffic Sensor Mode
Time Interval for the Traffic Sensor
Forward Average Speed (only supported by Forward Fire sensors)
Battery Voltage (only supported by In Lane sensors)
Traffic Zone or Sensor Name
Average Speed
Normal Volume Count
Occupancy
Long Volume Count

Links to each site's Traffic Status page and camera page (if configured) are provided, as well as a link to the Traffic History and Daily Count pages. For In Lane sensors, links will also be provided to Traffic Speed and Classification graphs. Refer to the Traffic Section for more details.

Site Menu Section

Once a specific site has been selected the Site Menu will be displayed. This section provides links to all site specific pages such as the Site Status, Camera, Bridge Sprayer Status, Traffic Status, SCAN*Cast, and Atmospheric History pages. Only links that pertain to the selected site will be displayed. All pages that display current RWIS data will automatically refresh every six minutes.

Site Status

The Site Status page is the most detailed SCAN Web page. It provides visibility to all current data for an RWIS site. The Site Status page will be formatted differently for NTCIP compliant sites. Typically, you can click on a site name from anywhere within SCAN Web to display a Site Status page. Each Site Status page will display the following RWIS information (if configured and supported - refer to the glossary for details):

Location or Site Name
Data Collection Time for the site (will be black when data has expired)
Air Sensor Data
Wind Sensor Data
Visibility Sensor Data
Precipitation Sensor Data
Solar Radiation Sensor Data (only supported for NTCIP sites)
Snow Depth Data (only supported for NTCIP sites)
Surface Sensor Data
Subsurface Sensor Data
Water Level Sensor Data
Camera Image (also provides a link to the site's Camera page)
Device Data (including status, and control state and control mode for NTCIP sites)

A link to the Device Interface page will also be provided and requires user authenication. Refer to the Administration User's Guide for more details.

Users can link to the glossary by selecting the column heading links to see a definition for each data item. The glossary will also provide details concerning whether a particular data item is supported for NTCIP sites.

Embedded throughout this page are links to each sensor's history data. Links to pages requiring user authentication will be provided to activate and configure bridge sprayers when sprayers are installed at NTCIP compliant sites.

Camera

The Camera page provides a full size view of the camera image collected from the selected site. This page also provides a link (located at the upper right of the camera page) to a Java applet that allows you to loop through the last six images collected at the site. The looping applet provides the user with a standard "recorder" control bar including a play, rewind, forward, scroll, stop, and time delay between frames. The date and time of each camera image will be displayed as the images are displayed.

A Camera Configuration link will also be provided if the site has been configured to support a camera with multiple camera positions. Camera links will only be displayed for sites configured with cameras.

Camera Configuration

The Camera Configuration page allows authorized users to modify the list of pre-configured camera positions to be collected from the site. A maximum of eight camera positions may be enabled per site.

Once a user submits changes to the camera configuration, the SCAN Server will then attempt to immediately send the configuration changes to the RWIS site. This will only be successful when the communications channel to the site is available and your system has been configured for on demand data retrieval. Queued changes that are not automatically sent in this manner will be transferred during the next scheduled communications session.

Changes that have not been sent to the RWIS site will be identified on the configuration page by a note displaying the user making the latest request and the time of the request.

A link will also be provided to the Camera Configuration Log, which displays the last several camera position change requests. Once on this page, users can change the time period covered by the log and link to the glossary by selecting the column heading links to see a definition for each data item.

These pages are only provided if the site has been configured to support a camera with multiple camera positions.

Traffic

The Traffic Status page displays the same information as the Traffic Summary page; however, only traffic data for a particular site is displayed. If the site is configured with a camera, the current camera image will also be displayed on this page. The camera image also provides a link to the site's Camera page.

SCAN*Cast

This link will be displayed when a SCAN*Cast (SSI's 24-hour pavement forecast service) is being delivered to your SCAN Server for the site selected. Your SCAN*Cast can be shown in a table or in a graphical format (depending on whether you have disabled or enabled your Java links). A SCAN*Cast displays all of the following forecast information and provides links to each of the following forecast components:

Temperatures - Displays forecast and actual temperatures for air, dew point and surface. In addition, a wind chill or heat index forecast is displayed, if applicable.
Precipitation & Cloud Cover - Displays the forecast and actual precipitation type and intensity, the cloud cover forecast, and the probability of precipitation forecast.
Snow Accumulation - Displays the snow accumulation forecast.
Wind - Displays the wind direction and speed forecast.
Relative Humidity - Displays the relative humidity forecast.
Forecaster Discussion - Site-specific detailed forecaster discussion.

The Snow Accumulation Forecast graph will only be displayed if there is snow accumulation in the forecast. Generally, only snow accumulations of two (2) inches are more will be displayed.

The Temperatures page includes an Options section at the bottom of the page, which allows you to customize the display. Each option is described below:

Graph Selection allows you to display forecast and/or actual data for the sensor covered by the SCAN*Cast. Simply check the appropriate checkbox and select the Update button. The forecast and actual temperature lines will be the same color; however, a thicker line will represent the forecast line.

Graph Scale determines the temperature range that is displayed on the graph. Select Full Scale to display all the forecasted and actual temperatures. Select around freezing to display the portion of the graph, which falls within a few degrees of freezing temperature. Select the Update button to redraw the graph. The Reset button will redraw the graph using the default selections.

Links are also provided to Historical SCAN*Casts and a table view of each SCAN*Cast. All embedded SCAN*Cast links will display the SCAN*Cast Graph when the Java links are enabled; table views of SCAN*Casts will be displayed when Java links are disabled.

The Historical SCAN*Cast link displays all SCAN*Casts for the last 7 days by date and time. Most SCAN Servers are configured to only retain SCAN*Casts that are less than 14 days old. If you want to display a list of all previous SCAN*Casts, select the All Previous checkbox and click the Go button. Historical SCAN*Casts are only available in graphical format.

Atmospheric History

A link to each site's Atmospheric History page is provided in the Site Data Menu Section. Refer to the History Data section of this document for details.

Bridge Sprayers

SCAN Web provides several pages which allow users to view current and historical bridge sprayer data for bridge sprayers that are installed at NTCIP sites. There are also pages that allow authorized users to activate and change the criteria used by the RPU to automatically activate the bridge sprayer under the specified conditions.

Bridge Sprayer Status

The following bridge sprayer data will be displayed on the Bridge Sprayer Status page:

Sprayer Name
Bridge Sprayer Status
Last Activation Time
Start Time of the last sprayer cycle
End Time of the last sprayer cycle

The following readings are provided for sites equipped with an internal bridge sprayer controller.

Tank Level Gauge
 Flow Since Last Event

Atmospheric and surface data will also be displayed to easily view the conditions that have caused the sprayer to activate, as well as, to view the effects on the chemical that has been applied to the bridge surface.   The following control data (data monitored to determine whether the sprayer will be automatically fired) will be displayed:

Surface Temperature
Freeze Point Temperature
Dew Point
Precipitation Type
Average Wind Speed

Users can link to the glossary by selecting the column heading links to see a definition for each data item.

Links will also be provided to each sprayer's history, activation, and configuration pages. The Bridge Sprayer Activation and Bridge Sprayer Configuration pages will require a username and password for access.

Sprayer Configuration

The Bridge Sprayer Configuration page allows authorized users to modify the current sprayer configuration including the sprayer's mode, operating surface temperature range, maximum wind speed threshold, freeze condition criteria, and frost condition criteria.

Once a user submits changes to the sprayer configuration, the SCAN Server will then attempt to immediately send the configuration changes to the RWIS site. This will only be successful when the communications channel to the site is available and your system has been configured for on demand data retrieval. Queued changes that are not automatically sent in this manner will be transferred during the next scheduled communications session.

Changes that have not been sent to the RWIS site will be identified on the configuration page by a note displaying the user making the latest request and the time of the request.

A link will also be provided to the Bridge Sprayer Management Log, which displays the last twenty sprayer configuration change requests. Once on this page, users can change the time period covered by the log and link to the glossary by selecting the column heading links to see a definition for each data item.

On Demand Activation

The Bridge Sprayer Activation page allows authorized users to manually activate a bridge sprayer. This page also displays the current bridge sprayer status.

Once a user submits a sprayer activation request, the SCAN Server will then attempt to immediately send the request to the RWIS site. This will only be successful when the communications channel to the site is available and your system has been configured for on demand data retrieval. Any requests that are not automatically sent in this manner will be transferred during the next scheduled communications session.

Activation requests that have not been sent to the RWIS site will be identified on the activation page by a note displaying the user making the latest request and the time of the request.

Traffic Data

In addition to the Traffic Summary and Traffic Status pages, SCAN Web provides traffic count graphs for In Lane (some times referred to as permanent count stations) traffic sensors. These pages are only provided for In Lane sensors.

Traffic Speed Graph

The Traffic Speed Graph provides a bar graph displaying the number of vehicles traveling in the pre-configured speed ranges. Data will be provided for each In Lane sensor at the specified site.

Links to the Traffic Classification Graph and the Traffic Speed History pages will also be provided.

Traffic Classification Graph

The Traffic Classification Graph provides a bar graph displaying the number of vehicles of particular lengths passing by the sensor. Data will be provided for each In Lane sensor at the specified site.

Links to the Traffic Speed Graph and the Traffic Classification History pages will also be provided.

Historical SCAN Web Data

SCAN Web provides several history pages in graphical and text formats. This section will describe each history page and the data displayed.

Surface History Graph

The Surface History Graph presents a line graph representation of historical temperature data for a single site. This graph will be displayed when a user selects a History link and has Java links enabled. At the top of each graph links are provided to additional table views. The default time period is twelve-hours starting from the present date and time. The System Information box displays the site name and number. The data displayed on the graph includes the following:

Surface Temperature for each sensor
Freeze Temperature for each sensor
Air Temperature
Dew point Temperature
Precipitation Bar Graph (reflects the start and ending time of precipitation)
Status Bar Graph (reflects a bar graph of the start and ending times of each status condition for each surface sensor)

Chart Scale allows you to specify the End Date and the Time Period. Enter the date and time for the end of the range for history data you are interested in viewing. The current date and time are initially displayed. You can specify a 6, 12, 24, or 48 hour time period.

Chart Selections specify the data to display on the graph. They are:

Air Temperature (default)
Dew Point Temperature
Surface Temperature (History data for any surface sensor at that site can be displayed. The color of the line on the graph matches the color of the selected surface sensor.)
Freeze Temperature (if available this line will be displayed as a dashed line)

The name and number of each sensor for the selected site is displayed along with a checkbox. Select the sensor or sensors you want displayed on the graph and click the Update button to redraw the graph. Click the Reset button to return all of the selections to their default values. The Legends checkbox allows you to display the Precipitation Type & Intensity and Surface Status legend.

Surface/Precipitation History

The Surface/Precipitation History page displays the following history data:

Date/Time displays the date and time of the history data
Surface Status Condition
Surface Temperature
Freeze Point Temperature
Chemical Factor
Chemical Percent
Solution Depth
Ice Percent
Surface Conductivity (for NTCIP compliant sites only)
Surface Salinity (for NTCIP compliant sites only)
Precipitation Type
Precipitation Intensity
Precipitation Accumulation (history not supported for NTCIP sites)
Precipitation Rate

Each historical table view allows the user to specify the ending date of a 24-hour time period. Forward and back buttons also provide an easy way to scroll through history data. History links to other history pages are also provided so that users can easily switch between historical data views and graphs. Each table view also provides an export link that allows you to copy the data displayed (in comma separated format) into a spreadsheet or text file.

This page will be displayed when a user selects a History link and has Java links disabled. At the top of each history page links are provided to additional history views and graphs. To view this page, select the Sf/Pc Table link.

Users can link to the glossary by selecting the column heading links to see a definition for each data item. The glossary will also provide details concerning whether a particular data item is supported for NTCIP sites.

Surface/Atmospheric History

The Surface/Atmospheric History page displays the following history data:

Date/Time displays the date and time of the history data
Surface Temperature
Subsurface Temperature
Air Temperature
Relative Humidity
Dew Point Temperature
Barometric Pressure (if configured)
Average Wind Speed
Wind Gust Speed
Wind Direction
Precipitation Type
Precipitation Intensity

Each historical table view allows the user to specify the ending date of a 24-hour time period. Forward and back buttons also provide an easy way to scroll through history data. History links to other history pages are also provided so that users can easily switch between historical data views and graphs. Each table view also provides an export link that allows you to copy the data displayed (in comma separated format) into a spreadsheet or text file. At the top of each history page links are provided to additional history views and graphs. To view this page, select the Sf/Atm Table link.

Users can link to the glossary by selecting the column heading links to see a definition for each data item. The glossary will also provide details concerning whether a particular data item is supported for NTCIP sites.

Atmospheric History

The Atmospheric History page displays the following history data:

Date/Time displays the date and time of the history data
Air Temperature
Relative Humidity
Dew Point Temperature
Barometric Pressure (if configured)
Average Wind Speed
Wind Gust Speed
Wind Direction
Precipitation Type
Precipitation Intensity
Precipitation Accumulation (history not supported for NTCIP sites)
Precipitation Rate
Visibility Distance (if configured)

Each historical table view allows the user to specify the ending date of a 24-hour time period. Forward and back buttons also provide an easy way to scroll through history data. History links to other history pages are also provided so that users can easily switch between historical data views and graphs. Each table view also provides an export link that allows you to copy the data displayed (in comma separated format) into a spreadsheet or text file. At the top of each history page links are provided to additional history views and graphs. You can also access this page from the Site Data menu section. To view this page, select the Atmos Table link.

Users can link to the glossary by selecting the column heading links to see a definition for each data item. The glossary will also provide details concerning whether a particular data item is supported for NTCIP sites.

Snow Depth History

The Snow Depth History page displays the following history data:

Date/Time displays the date and time of the history data
Snow Depth (Snow Depth as reported by a snow depth sensor)

Each historical table view allows the user to specify the ending date of a 24-hour time period. Forward and back buttons also provide an easy way to scroll through history data. Each table view also provides an export link that allows you to copy the data displayed (in comma separated format) into a spreadsheet or text file. You can access this page by selecting the History link from the Snow Depth table on the Site Status page.

Users can link to the glossary by selecting the column heading links to see a definition for each data item. Snow Depth is only supported for NTCIP sites.

Subsurface History

The Subsurface History page displays the following history data:

Date/Time displays the date and time of the history data
Subsurface Temperature
Subsurface Moisture (only supported for NTCIP sites)

Each historical table view allows the user to specify the ending date of a 24-hour time period. Forward and back buttons also provide an easy way to scroll through history data. History links to other history pages are also provided so that users can easily switch between historical data views and graphs. Each table view also provides an export link that allows you to copy the data displayed (in comma separated format) into a spreadsheet or text file. You can access this page by selecting the History link from the Subsurface table on the Site Status page.

Users can link to the glossary by selecting the column heading links to see a definition for each data item. The glossary will also provide details concerning whether a particular data item is supported for NTCIP sites.

Water Level History

The Water Level History page displays the following history data:

Date/Time displays the date and time of the history data
Height (Water level as reported by a water level sensor)

Each historical table view allows the user to specify the ending date of a 24-hour time period. Forward and back buttons also provide an easy way to scroll through history data. History links to other history pages are also provided so that users can easily switch between historical data views and graphs. Each table view also provides an export link that allows you to copy the data displayed (in comma separated format) into a spreadsheet or text file. You can access this page by selecting the History link from the Water Level table on the Site Status page.

Users can link to the glossary by selecting the column heading links to see a definition for each data item. The glossary will also provide details concerning whether a particular data item is supported for NTCIP sites.

Bridge Sprayer History

The Bridge Sprayer History page (only supported for NTCIP sites) displays the historical sprayer data along with the surface data for the sensor that is controlling the sprayer from the RPU (if applicable). Only the sprayer data will be displayed if the sprayer is not being controlled by the RPU. The following history data is displayed:

Date/Time displays the date and time of the history data
Sprayer Status
Last Activation Time
Start Time of last spraying cycle
End Time of last spraying cycle
User Activation (user name making a on demand activation request)
Sprayer Configuration at (provides a link to sprayer configuration that was effective at the time) If a controlling sensor has been configured for this sprayer then the following history data will also be displayed:
Surface Temperature
Freeze Point Temperature (* indicates the freeze temperature is being reported by a different sensor than the surface temperature)
Dew Point
Precipitation Type
Average Wind Speed

Each historical table view allows the user to specify the ending date of a 24-hour time period. Forward and back buttons also provide an easy way to scroll through history data. Each table view also provides an export link that allows you to copy the data displayed (in comma separated format) into a spreadsheet or text file. You can access this page by selecting the History link from the Bridge Sprayer Status table on the Site Status or Bridge Sprayer Summary page.

A link to the Bridge Sprayer Events page is also provided on the Bridge Sprayer History Page for sites that are equipped with a spray controller module.  The Bridge Sprayer Events page will display event statistics for each completed sprayer event that has occurred during a 24-hour time period.  It should be noted that only completed events will be displayed.  Events that are currently in progress will not be displayed.  The following information will be displayed for each event:

 Start time of event
 End time of event
 Event Completion Detail
 Informational Warning Messages
 Starting tank Level
 Ending tank level
 Amount of chemical used during event
 Minimum Line Pressure
 Maximum Line Pressure

Users can link to the glossary by selecting the column heading links to see a definition for each data item. The glossary will also provide details concerning whether a particular data item is supported for NTCIP sites.

Daily Traffic Count

The Daily Traffic Count page displays the total traffic counts for a sensor for the specified date. Totals are broken down by hour and subtotals are shown for Normal and Long Volumes for all types of traffic sensors. Subtotals for traffic classifications and speeds are provided for all In Lane traffic sensors.

Each Daily Count page allows the user to specify a date and you can access this page by selecting the Daily Count link from the Traffic Summary or Traffic Status page.

Users can link to the glossary by selecting the column heading links to see a definition for each data item.

Traffic History

The Traffic History page displays the following history data:

Date/Time displays the date and time of the history data
Average Speed
Normal Volume
Occupancy
Long Volume (for side fire sensors not configured for Average Headway collection)
Forward Average Speed (for forward fire sensors only)
Average Headway (for side fire sensors not configured for Long Volume collection)
Surface Status (only for In Lane sensors)
Surface Temperature (only for In Lane sensors)
Battery Voltage (only for In Lane sensors)

Each historical table view allows the user to specify the ending date of a 24-hour time period. Forward and back buttons also provide an easy way to scroll through history data. History links to other traffic history pages are also provided so that users can easily switch between historical data views and graphs. Each table view also provides an export link that allows you to copy the data displayed (in comma separated format) into a spreadsheet or text file.

You can access this page by selecting the History link on the Traffic Summary or Traffic Status page.

Users can link to the glossary by selecting the column heading links to see a definition for each data item.

Traffic Speed History

The Traffic Speed History page displays the following history data for In Lane traffic sensors:

Date/Time displays the date and time of the history data
Traffic counts for each pre-configured speed range

Each historical table view allows the user to specify the ending date of a 24-hour time period. Forward and back buttons also provide an easy way to scroll through history data. History links to other traffic history pages are also provided so that users can easily switch between historical data views and graphs. Each table view also provides an export link that allows you to copy the data displayed (in comma separated format) into a spreadsheet or text file.

You can access this page by selecting the History link on the Traffic Speed Graph.

Users can link to the glossary by selecting the column heading links to see a definition for each data item.

Traffic Speed History Graph

The Traffic Speed History Graph presents a line graph representation of historical speed data for a single In Lane traffic sensor. At the top of each graph links are provided to additional historical traffic pages. The default time period is twelve-hours starting from the present date and time. The System Information box displays the site and sensor name.

The graph will display a line for each speed range showing the number of vehicles traveling at each speed over the time-selected period.

Chart Scale allows you to specify the End Date and the Time Period. Enter the date and time for the end of the range for history data you are interested in viewing. The current date and time are initially displayed. You can specify a 6, 12, 24, or 48 hour time period.

Data Options specify the speed ranges to display on the graph.

The name and number of each traffic speed range for the selected sensor is displayed along with a checkbox. Select the ranges you want displayed on the graph and click the Update button to redraw the graph. Click the Reset button to return all of the selections to their default values.

Traffic Classification History

The Traffic Classification History page displays the following history data for In Lane traffic sensors:

Date/Time displays the date and time of the history data
Traffic counts for each pre-configured vehicle classification (length) range

Each historical table view allows the user to specify the ending date of a 24-hour time period. Forward and back buttons also provide an easy way to scroll through history data. History links to other traffic history pages are also provided so that users can easily switch between historical data views and graphs. Each table view also provides an export link that allows you to copy the data displayed (in comma separated format) into a spreadsheet or text file.

You can access this page by selecting the History link on the Traffic Classification Graph.

Users can link to the glossary by selecting the column heading links to see a definition for each data item.

Traffic Classification History Graph

The Traffic Classification History Graph presents a line graph representation of historical vehicle lengths data for a single In Lane traffic sensor. At the top of each graph links are provided to additional historical traffic pages. The default time period is twelve-hours starting from the present date and time. The System Information box displays the site and sensor name.

The graph will display a line for each vehicle classification type showing the number of vehicles of a particular type over the time-selected period.

Chart Scale allows you to specify the End Date and the Time Period. Enter the date and time for the end of the range for history data you are interested in viewing. The current date and time are initially displayed. You can specify a 6, 12, 24, or 48 hour time period.

Data Options specify the vehicle classes to display on the graph.

The name and number of each vehicle class for the selected sensor is displayed along with a checkbox. Select the classes you want displayed on the graph and click the Update button to redraw the graph. Click the Reset button to return all of the selections to their default values.

Device History (basic relay control)

The Device History page (not supported for NTCIP sites) displays the current device status along with the current surface data for the sensor that is controlling the device from the RPU (if applicable). Only the device status will be displayed if the device is not being controlled by the RPU. The following history data is also displayed:

Date/Time displays the date and time of the history data
Device Status
Last Device Command sent from a user
User (or RPU) that set the device status

If a controlling sensor has been configured for this device then the following history data will also be displayed:

Surface Status
Surface Temperature
Freeze Point Temperature
Chemical Factor
Chemical Percent
Air Temperature
Dew Point
Average Wind Speed
Precipitation Type

Each historical table view allows the user to specify the ending date of a 24-hour time period. Forward and back buttons also provide an easy way to scroll through history data. Each table view also provides an export link that allows you to copy the data displayed (in comma separated format) into a spreadsheet or text file. You can access this page by selecting the History link from the Device Status table on the Site Status page.

Users can link to the glossary by selecting the column heading links to see a definition for each data item. The glossary will also provide details concerning whether a particular data item is supported for NTCIP sites.

Generic Device History

The Device History page (only supported for NTCIP sites) displays the current device status along with the current RWIS data for the sensors that are related to the operation of the device (if applicable). Only the device data will be displayed if there are no sensors related to the operation of the device. The following history data is also displayed:

Date/Time displays the date and time of the history data
Control Mode
Control State
Set By (which shows who set the devcie to it's current state)
Device Status (feedback from the device, if configured)
User Requests (including the user making the request, device mode, and control state)

If a related sensor has been configured for this device then the following history data will also be displayed:

Air Temperature
Dew Point
Average Wind Speed
Precipitation Type
Surface Temperature
Freeze Point Temperature
Surface Status

Each historical table view allows the user to specify the ending date of a 24-hour time period. Forward and back buttons also provide an easy way to scroll through history data. You can access this page by selecting the History link from the Device Status table on the Site Status page.

Users can link to the glossary by selecting the column heading links to see a definition for each data item. The glossary will also provide details concerning whether a particular data item is supported for NTCIP sites.

Exporting Historical SCAN Web Data

Each historical table view provides an Export link that allows a user to create a comma delimited web page. Each page historical export page provides instructions on how to export the history data into text file. You can export history data in 24-hour slices. This provides a simple way to export RWIS data into a spreadsheet or text file for external analysis.

It is also possible to export historical data from history tables by highlighting the data and "cutting and pasting" the data you wish to export into a spreadsheet program such as Microsoft Excel.