User's Guide
Contents
 
 
 
 
 
 
 
 
 
Introduction

is the latest Road/Runway Weather Information Systems (RWIS) user interface from Surface System's, Inc. 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). makes use of these standard technologies to display SCAN RWIS data using widely available HTML browsers such as Netscape Navigator and Microsoft Internet Explorer.

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, integrates current video images when sites are configured with video cameras. can also display weather and pavement forecasts from SSI's SCAN*Cast forecast service.

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

How Does Work?

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

Accessing

Accessing the data from your 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 site from a network, simply open your Internet browser and enter the name of the Server in the Address box of your browser. Your initial 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 user interface as if they were on a network.

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

To set as your default home page, set the Home page as the default "Home" page in your browser's preferences. If you don't want the 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 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 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.

Navigation Bar

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

Menu Section

The menu section will be displayed on all pages. It contains links to system level pages such as the 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 home page is also referred to as the main menu page. The default Home page will display your registration information and copyright and software license information. The Home link provides an easy way to return to your 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 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 system. This link will only be displayed when cameras are installed.  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 system. 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 system. 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 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.

User's Guide

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

On-line Glossary

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.

Additional Links

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

Summaries Menu Section

The Summaries menu section contains links to each Site Group Summary page that is configured on your system. 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 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 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
Total Volume Count
Normal Volume Count
Long Volume Count
Unclassifed Volume Count
Occupancy

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 data. 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 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 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 system 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.

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

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 system 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 system 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, provides traffic data for In Lane (some times referred to as permanent count stations) traffic sensors. These pages are only provided for In Lane sensors.

Historical traffic counts for speed and classification will also be provided.

Historical Data

provides several history pages displaying data in various formats. This section will describe each history page and the data displayed.

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. 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. 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. 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. 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. 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. 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.

Traffic History

The Traffic History page displays the following history data:

Date/Time displays the date and time of the history data
Average Speed
Total Volume
Normal Volume
Long Volume (for side fire sensors not configured for Average Headway collection)
Unclassified Volume
Occupancy
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)
Chem Factor (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. 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.

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 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. 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.

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

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.

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

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 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.