Roadway Warning Functional Area


'Roadway Warning' includes the field equipment used to warn drivers approaching hazards on a roadway. Warnings may be generated in response to roadway weather conditions, road surface conditions, traffic conditions including queues, obstacles or animals in the roadway, and any other transient events that can be sensed. The equipment monitors traffic and roadway conditions and may send data to a Traffic Management Center for processing or may process it to determine when a warning should be issued. When it is determined that a warning should be issued, the equipment is used to alert approaching drivers via dynamic warning signs, flashing lights, in–vehicle messages, etc.

Included In

TxDOT – Dallas District Roadway Devices
TxDOT – Fort Worth District Roadway Devices

Functional Requirements

1The field element shall monitor for hazardous traffic conditions, including queues.
2The field element shall monitor for hazardous road surface and local weather conditions.
3The field element shall monitor for debris, animals, or other objects in the travel lanes.
4The field element shall provide collected sensor data to the controlling center.
5The field element shall autonomously identify potentially hazardous conditions and activate warning signs to approaching motorists.
6The field element shall receive commands from the controlling center that activate warning signs to approaching motorists.
7The field element shall collect operational status of the warning system field equipment and report the operational status to the controlling center.
8The field element shall monitor the warning devices and report faults to the controlling center.