Effective signal controls
For right turns
Right-turns at intersections can be processed efficiently by lengthening right-turn arrow signal displays as soon as vehicle detectors detect vehicles in the intersection right-turn lanes.
Lengthening of green signal display and shortening of red signal display at intersections when bus detectors or infrared beacons register the approach of buses reduces the time buses have to wait at signals.
This priority signal control helps ensure that buses run on time.
For driver dilemma
The amber signal display helps drivers decide whether to stop or continue as they approach intersections, thus helping to reduce rear-end and head-on collisions.
For the elderly and the disabled
When elderly and visually impaired people cross the road, they can use a portable device or push a button of pedestrian signal to extend green signal display time so as to ensure safer intersection crossing.