ATMS19-Speed Warning and Enforcement (Service Package*)

Description

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 ATMS22-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.

Service Package Graphic

Roadway Speed Monitoring and WarningTMC Speed Monitoring and WarningMCM Speed Monitoring and WarningRoadway Equipment CoordinationRoadwayTraffic ManagementDriverVehicle CharacteristicsOther RoadwayRoadway EnvironmentMaintenance and Construction ManagementTrafficEnforcement AgencyTraffic Operations PersonnelMaintenance and Construction Center PersonnelVehicledriver informationspeed monitoring informationvehicle characteristicsspeed monitoring controlspeed monitoring informationroadway equipment coordinationenvironmental conditionstraffic characteristicsspeed monitoring controlspeed monitoring controltraffic violation notificationspeed monitoring informationrequest for enforcementmaint and constr operations information presentationmaint and constr center personnel inputsrequest for enforcementtraffic operator datatraffic operator inputsvehicle signage data

Get the Source Graphic, a Windows Metafile (WMF), in ZIP format.
About this Graphic

Includes Architecture Flows:

Source Architecture Flow Destination In Graphic
Enforcement Agency speed monitoring control Indicates that the associated architecture flow either has been or will be addressed by ITS Standards Roadway Yes
Maintenance and Construction Center Personnel maint and constr center personnel inputs Maintenance and Construction Management Yes
Maintenance and Construction Management request for enforcement Enforcement Agency Yes
Maintenance and Construction Management maint and constr operations information presentation Maintenance and Construction Center Personnel Yes
Maintenance and Construction Management speed monitoring control Indicates that the associated architecture flow either has been or will be addressed by ITS Standards Roadway Yes
Other Roadway roadway equipment coordination Indicates that the associated architecture flow either has been or will be addressed by ITS Standards Roadway Yes
Roadway driver information Driver Yes
Roadway speed monitoring information Indicates that the associated architecture flow either has been or will be addressed by ITS Standards Enforcement Agency Yes
Roadway traffic violation notification Enforcement Agency Yes
Roadway speed monitoring information Indicates that the associated architecture flow either has been or will be addressed by ITS Standards Maintenance and Construction Management Yes
Roadway roadway equipment coordination Indicates that the associated architecture flow either has been or will be addressed by ITS Standards Other Roadway Yes
Roadway speed monitoring information Indicates that the associated architecture flow either has been or will be addressed by ITS Standards Traffic Management Yes
Roadway vehicle signage data Indicates that the associated architecture flow either has been or will be addressed by ITS Standards Vehicle Yes
Roadway Environment environmental conditions Roadway Yes
Traffic traffic characteristics Roadway Yes
Traffic Management request for enforcement Enforcement Agency Yes
Traffic Management speed monitoring control Indicates that the associated architecture flow either has been or will be addressed by ITS Standards Roadway Yes
Traffic Management traffic operator data Traffic Operations Personnel Yes
Traffic Operations Personnel traffic operator inputs Traffic Management Yes
Vehicle Characteristics vehicle characteristics Roadway Yes
    - This icon indicates that the associated architecture flow either has been or will be addressed by ITS Standards. Select the architecture flow for more information on relevant standards activities.

Associated Planning Factors and Goals

Planning Factor Goal
B. Increase the safety of the transportation system for motorized and nonmotorized users; Improve the safety of the transportation system

Associated Objective Categories

Objective Category
Safety: Vehicle Crashes and Fatalities

Associated Objectives and Performance Measures

Objective Performance Measure
Reduce crashes due to driver errors and limitations Number of crashes and fatalities related to driver inattention and distraction
Reduce crashes due to driver errors and limitations Number of crashes and fatalities related to driving while intoxicated
Reduce crashes due to unexpected congestion Number of crashes and fatalities related to unexpected congestion
Reduce speed differential Number of crashes and fatalities related to excessive speeding
Reduce speed differential Number of speed violations
Reduce the total number of crashes in the region by X percent by year Y. Total crashes per X VMT.
Reduce the total number of crashes involving bicyclists and pedestrians in the region by X percent by year Y. Total crashes involving bicycles.
Reduce the total number of crashes involving bicyclists and pedestrians in the region by X percent by year Y. Total crashes involving pedestrians.
Reduce the total number of fatalities and severe injuries in the region by X percent by year Y. Total fatalities per X VMT.
Reduce the total number of fatalities and severe injuries in the region by X percent by year Y. Total severe injuries per X VMT.

 
Since the mapping between objectives and service packages is not always straight-forward and often situation-dependent, these mappings should only be used as a starting point. Users should do their own analysis to identify the best service packages for their region.

Related ITS Applications of ITS Taxonomy

Classification Category ITS Application Area ITS Application(s)
Intelligent Infrastructure Arterial Management Enforcement Speed Enforcement
Intelligent Infrastructure Crash Prevention & Safety Road Geometry Warning Curve Speed Warning

Downhill Speed Warning

Ramp Rollover Warning
Intelligent Infrastructure Freeway Management Enforcement Speed Enforcement
Intelligent Infrastructure Roadway Operations & Maintenance Work Zone Management Speed Enforcement

User Services related to this Service Package:

User Service
1.6 Traffic Control
8.1 Maintenance And Construction Operations

Transaction Set Diagram

Note that this transaction set diagram (TSD) is only 1 of the 3 TSDs and so only a portion of the numbered items below refer to the TSD.
ATMS19 transaction set diagrams: Part 1, Part 2, Part 3,



The source graphic, a Windows Metafile (WMF), for the TSDs can be downloaded here: TSD Part 1, TSD Part 2, TSD Part 3,

The following discusses how the National ITS Architecture provides the transportation service described by this service package. Each numbered item describes the operation of that portion of the service package identified with the corresponding number on the transaction set diagram.

  1. The Maintenance and Construction Management Subsystem (MCMS) can monitor vehicle speeds on a roadway. Speed monitoring is critically important in construction zones where maintenance personnel are working. The MCMS configures and controls automated speed monitoring, speed warning, and speed enforcement systems (speed monitoring control) on the Roadway.

  2. Equipment on the Roadway measures traffic volume, speed, density and other characteristics (traffic characteristics). Equipment can identify specific vehicles and their speeds (vehicle characteristics). The current weather and roadway conditions (environmental conditions), which can impact the speed limit, are also monitored.

  3. The equipment on the Roadway used for speed monitoring and enforcement can be coordinated with signs, signals, and Field-Vehicle Communications equipment (roadway equipment coordination) through peer-to-peer, master-slave or other configurations.

  4. Drivers can be notified (driver information) en-route of their speed through signs, signals or other equipment on the Roadway. Alternatively, Field-Vehicle Communications can be used to send current speed information and warnings to the vehicle for presentation to the driver (vehicle signage data).

  5. The MCMS monitors the speed monitoring system status including current operational state and logged information including measured speeds, warning messages displayed, and violation records (speed monitoring information).

  6. The entire process is under the monitoring (maint and constr operations information presentation) and control (maint and constr center personnel inputs) of Maintenance and Construction Center Personnel.

  7. The MCMS can request speed enforcement (request for enforcement) from the Enforcement Agency when needed to address safety issues in a work zone or other special situations.

  8. The Traffic Management Subsystem can also monitor speeds on roadways. The Traffic Management Subsystem would configure and control automated speed monitoring, speed warning, and speed enforcement systems (speed monitoring control) on the Roadway.

  9. Equipment on or along the Roadway measures traffic volume, speed, density and other characteristics (traffic characteristics). Equipment can identify specific vehicles and their speeds (vehicle characteristics). The current weather and roadway conditions (environmental conditions), which can impact the speed limit, are also monitored.

  10. The equipment on the Roadway used for speed monitoring and enforcement can be coordinated with signs, signals, and Field-Vehicle Communications equipment (roadway equipment coordination) through peer-to-peer, master-slave or other configurations.

  11. Drivers can be notified (driver information) en-route of their speed through signs, signals or other equipment on the Roadway. Alternatively, Field-Vehicle Communications can be used to send current speed information and warnings to the vehicle for presentation to the driver (vehicle signage data).

  12. The Traffic Management Subsystem monitors the speed monitoring system status including current operational state and logged information including measured speeds, warning messages displayed, and violation records (speed monitoring information).

  13. The entire process is under the monitoring (traffic operator data) and control (traffic operator inputs) of Traffic Operations Personnel.

  14. The Traffic Management Subsystem can request speed enforcement (request for enforcement) from the Enforcement Agency when needed to address safety issues or other special situations.

  15. Speed monitoring can also be performed by an Enforcement Agency. The Enforcement Agency would configure and control automated speed monitoring, speed warning, and speed enforcement systems (speed monitoring control) on the Roadway.

  16. Equipment can identify specific vehicles and their speeds (vehicle characteristics). The current weather and roadway conditions (environmental conditions), which can impact the speed limit, are also monitored.

  17. The equipment on the Roadway used for speed monitoring and enforcement can be coordinated (roadway equipment coordination) through peer-to-peer, master-slave or other configurations.

  18. The Enforcement Agency monitors the speed monitoring system status including current operational state and logged information including measured speeds, warning messages displayed, and violation records (speed monitoring information).

  19. The Enforcement Agency would be notified when a speed violation (traffic violation notification) was detected by equipment on the Roadway.