Transit Signal Priority
Metro Transit buses traveling on Central Avenue use Transit Signal Priority technology to communicate with traffic signals to stay on schedule.
Unlike communications between traffic signals and emergency vehicles such as ambulances and police, buses can't preempt a signal to change it from red to green. However, buses that are slightly behind schedule are able to communicate with traffic signals to request maintaining a green light for a few extra moments as they approach an intersection. The signal controller can grant the extension of the green light if it will not disrupt overall traffic conditions.