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?

Q: Alfred Velasquez of San Bernardino asked what the red light on the back side of the metered freeway ramp light is for. “I see it after entering the freeway using a metered light. Why have a red ...

PHOENIX — Drivers may be tempted to blow through those pesky traffic flow lights at on-ramps along the Interstate 17, but officials with the Arizona Department of Transportation said that those lights ...

North bound drivers on Highway 195 will soon have a new light to stop at before merging onto eastbound Interstate 90. The Washington Department of Transportation has been installing a stop-and-go ramp ...

Colorado Springs drivers will get a little help merging onto the freeway from South Academy Boulevard. A ramp meter on South Academy to northbound Interstate 25, which will allow one car at a time to ...

If you’ve travel on Interstate 95 in Miami-Dade and Broward, you’ve probably seen traffic lights flashing red and green on some highway entrance ramps. Purpose: These signals, installed by Florida ...

Phoenix area drivers are familiar with freeway entrance-ramp meters that show alternating green and red traffic lights during weekday rush hours. But now, some of the red lights on Interstate 17 ramp ...