Metering lights debut this week in Sonoma County
Traffic lights are coming to I-25 on-ramps in Colorado Springs | News | gazette.com
Ramp Signalling - YouTube
Another I-90 on-ramp in Spokane is getting one of those stop lights, pacing entry onto the freeway | The Spokesman-Review
Traffic Lights On Freeway Ramps Are Probably Making Your Commute Faster | LAist
Ramp Meters: Unappreciated or just misunderstood? | Department of Transportation
540 on-ramp signals will improve safety, reliability — Driving the Conversation
Why the lights on freeway onramp can't end traffic jams - Los Angeles Times
Ramp Signaling
Ramp meter - Wikipedia
50 years ago, LA got its first freeway onramp meter. Here's how they changed traffic – Daily News
Red light on freeway ramp: Do you have to stop?
Ramp Metering Design Manual
Ramp meter' traffic signals now part of the I-287 landscape
Ask Joe: Why are metering lights on when freeway traffic is light? | KRNV
I-95 drivers, get ready to stop: All on-ramps are getting traffic signals
What's Driving You Crazy: If a ramp meter light is green, do you have to stop?
Illinois Department of Transportation - DID YOU KNOW: These traffic signals at expressway entrance ramps are called ramp meters. If followed correctly, ramp meters decrease travel times by 20% and decrease crashes
Ramp Metering: A Proven, Cost-Effective Operational Strategy - A Primer: 1. Overview of Ramp Metering
Do ramp signals really help? - Greater Auckland
New Ramp Meters on I-80
I Can't Stop Watching Awful Drivers Overcook This Weird Exit Ramp - The Autopian
