Module B2 - Slide 11
Another signal terms is “coordinated system”. This is when signals at multiple intersections along a road are timed to coordinate with each other. This is usually done to move traffic more efficiently. Depending on how the signals are configured, this can have an effect on a blind pedestrian crossing the major road at one of these coordinated signals. There may be instances where the green light is given for the minor street, but not the pedestrian signal (for crossing the major road). This might be done because there is enough time in the coordination scheme to let one or two minor road vehicles out but not enough time for a pedestrian phase. In this case, the pedestrian phase would be held until the next full cycle. However, a blind pedestrian would not know that the pedestrian phase is being held and might proceed when they hear the minor street vehicles start. Since there is not enough time designated for a pedestrian to cross the street, they might be in mid-crossing when a major street vehicle arrives.