As you begin to enter a California highway, you might encounter a ramp meter telling you when you can — or cannot — merge without stopping. What are the rules when those lights are active at on-ramps?

From the Washington State Department of Transportation: SPOKANE, Wash. - Weekday commuters soon will travel more smoothly as they merge onto eastbound Interstate 90 from the Geiger/Grove interchange.

SPOKANE, Wash. — The Washington State Department of Transportation is activating five new ramp meters at high-traffic areas along Interstate 90 in Spokane this week and next. The new ramp meters are ...

Reno, NEV — It's no fun sitting in traffic and it's no fun sitting and waiting for the metering lights to turn green when traffic is light.That's the situation one of my colleagues here at the station ...

SPOKANE, Wash. — The Washington State Department of Transportation will activate a new ramp meter on eastbound US-2 ramp to I-90 on July 6. During the weekday commute, the ramp will be metered from ...