A Review of Selected South African Urban Traffic Control Systems
نویسندگان
چکیده
Under these conditions the authority will soon justify the installation of a traffic signal, which many perceive as the answer to all traffic congestion problems. A traffic signal that is properly justified, designed, installed, operated and maintained can have many positive and real benefits. On the other hand, however, a poorly motivated and designed traffic signal can be particularly inefficient and unsafe. In many cases traffic signals are inappropriately installed due to poor evaluation of prevailing conditions.
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