Roadway Freeway Control

Freeway control equipment including ramp meters, mainline metering, and lane control equipment which controls traffic on freeways, including indicators to drivers.

1. The field element shall include ramp metering controllers, mainline meters, and lane controls for use on freeways, under center control.
2. The field element shall return ramp metering controller, mainline meters, and lane control operational status to the controlling center.