Roadway Traffic Metering Functional Area
'Roadway Traffic Metering' includes the field equipment used to meter traffic on ramps, through interchanges, and on the mainline roadway. The equipment includes dynamic messages signs to provide guidance and information to drivers at and approaching a meter, including information for any special bypass lanes.
|The field element shall regulate the flow of traffic on ramps, interchanges, and the mainline, under center control.
|The field element shall monitor operation of ramp, interchange, and mainline meters and report to the center any conflicts between received control plans and current system operation.
|The field element shall return ramp, interchange, and mainline meter operational status to the controlling center.
|The field element shall provide indications to the driver that the metering system is active and provide safe transitions between active and inactive status.
|The field element shall return ramp, interchange, and mainline meter fault data to the maintenance center for repair.