Assertion: ramp meter | /r/CapableOf | regulate the flow of traffic
Facets:
value: according to current traffic conditions
type: OTHER
Source sentences:
text: A ramp meter, ramp signal, or metering light is a device, usually a basic traffic light or a two-section signal light (red and green only, no yellow) together with a signal controller, that regulates the flow of traffic entering freeways according to current traffic conditions.