TMC Variable Speed Limits


Remotely monitors and controls variable speed limits systems, including equipment that monitors current traffic and environmental conditions, determines the current speed limits by lane, and displays the speed limits and additional information to drivers.

Included In

TxDOT District Traffic Management Center

Functional Requirements

ID Requirement
1 The center shall monitor data on traffic and environmental conditions collected from sensors along the roadway.
2 Based on the measured data, the center shall calculate and set suitable speed limits by lane.
3 The center shall control field equipment that posts the current speed limits and displays additional information such as basic safety rules and current traffic information to drivers.
4 The center shall monitor the operational status of the variable speed limit equipment, including fault reports.
5 The center shall provide center personnel current system status and respond to control data from center personnel regarding variable speed limits and