What triggers green lights on metered ramps?

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Multiple Choice

What triggers green lights on metered ramps?

Green lights on metered ramps are triggered by detectors at the stop line. When you pull up and stop behind the white line, a sensor under the pavement detects your vehicle. That detection tells the ramp-meter controller that a vehicle is waiting, and the system then changes the signal to green in its cycle to let the car onto the ramp. It isn’t about timers resetting, honking, or there simply being no traffic—the light responds to the presence of a waiting vehicle detected at the stop line. So, staying stopped at the line until the light turns green is the correct behavior, and you proceed once it’s green.

Green lights on metered ramps are triggered by detectors at the stop line. When you pull up and stop behind the white line, a sensor under the pavement detects your vehicle. That detection tells the ramp-meter controller that a vehicle is waiting, and the system then changes the signal to green in its cycle to let the car onto the ramp. It isn’t about timers resetting, honking, or there simply being no traffic—the light responds to the presence of a waiting vehicle detected at the stop line. So, staying stopped at the line until the light turns green is the correct behavior, and you proceed once it’s green.

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