What is the minimum depth of a crosswalk that must flash the green (go) sign?

The minimum depth of a crosswalk that must flash the green (go) sign is established to ensure adequate time for pedestrians to safely cross the street. A duration of 6 seconds is considered the minimum required to allow pedestrians, including those who may be slower or using mobility aids, to complete their crossing without feeling rushed or being at risk. This timing takes into account average walking speeds and the average width of crosswalks, ensuring a reasonable safety standard.

The other durations listed—5 seconds, 7 seconds, and 8 seconds—either do not provide sufficient time for all pedestrians or may exceed the necessary standard for a safe crossing. While longer durations may increase safety, the regulation specifically defines 6 seconds as the minimum acceptable time, balancing safety with the efficiency of traffic flow.