Signal timing is the technique which traffic engineers use to distribute right-of-way at a signalized intersection. Signal timing involves deciding how much green time the traffic signal provides to an intersection approach, how long the pedestrian WALK signal should be, and numerous other factors. Signal timing is the technique which traffic engineers use to distribute right-of-way at a signalized intersection. Signal timing involves deciding how much green time the traffic signal provides to an intersection approach, how long the pedestrian WALK signal should be, and numerous other factors.