TM17: Speed Warning and Enforcement (WSDOT)
Need Area Description
––Instance of TM17–– This service package monitors vehicle speeds and supports warning drivers when their speed is excessive. Also the service includes notifications to an enforcement agency to enforce the speed limit of the roadway. Speed monitoring can be made via spot speed or average speed measurements. Roadside equipment can display the speed of passing vehicles and/or suggest a safe driving speed. Environmental conditions and vehicle characteristics may be monitored and factored into the safe speed advisories that are provided to the motorist. For example, warnings can be generated recognizing the limitations of a given vehicle for the geometry of the roadway such as rollover risk for tall vehicles.
This service focuses on monitoring of vehicle speeds and enforcement of the speed limit while the variable speed limits service (covered in TM20–Variable Speed Limits service package) focuses on varying the posted speed limits to create more uniform speeds along a roadway, to promote safer driving during adverse conditions (such as fog) and/or to reduce air pollution.
Need Area Type: Unspecified
Service Package
TM17: Speed Warning and Enforcement (WSDOT SWR)Includes Needs
| Number | Need |
|---|---|
| 01 | Traffic Operations need to be able to monitor vehicle speeds to determine when vehicle speed is excessive. |
| 02 | Traffic Operations need to be able to warn drivers when their speed is excessive. |
| 03 | Traffic Operations need to be able to notify an enforcement agency that vehicles are traveling at excessive speed and to be able to request that the enforcement agency respond to the excessive speed. |
| 04 | Enforcement agencies need to be able to monitor vehicle speeds as measured by field equipment to determine when vehicle speed is excessive. |