Road crashes are a prime cause of death and disability and red-light running is a common cause of crashes at signalised intersections.
道路事故是死亡及失能的主因，且闯红灯是号志路口处发生碰撞的常见原因。
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By the end of 1997, 308 signalised junctions on Hong Kong Island were under the ATC system and 40 closed circuit television (CCTV) cameras were in use for traffic surveillance.