交通信号控制系统是现代城市交通指挥系统的关键设备之一。UTC1000集中协调式交通信号控制机的设计依据是新国标GA47-2002，并吸收了著名的日本京三、SCATS、SCOOTS系统的部分优点。该系统是在公安部交通安全产品检测中心、中国人民公安大学的专家指导下设计完成。UTC1000集中协调式交通信号控制机由主控CPU板、灯组驱动板、电源板、通讯板、车辆检测器接口板、扩展板等多种功能模块插件板，以及配电板、总线板、接线端子排等组成。该产品已经按照GA47-2002国家标准，通过公安部交通安全产品监测中心的全项检测（编号2004-024），并获得了国家专利（ZL01254878.2）。 UTC1000 Vehicle Actuated Controller When a signal is installed, multiple 2 meter by 2 meter coils of wire are placed under the road surface. These wires are connected to the controller equipment. A small electrical signal is present on the wires and when a vehicle drives over the loops it changes the inductance value on the wire. This change of inductance is recognized as a vehicle presence and the controller acts accordingly. Vehicles should always stop at the white "stop bar" painted on the road. This is where the last loop in your lane is located. Usually there are multiple loops per lane in order to achieve good vehicle detection. Loops can also count vehicles. The UTC1000 Vehicle Actuated Controller be designed based on“GA47-2002 Vehicle signal Controller standard”.and passed the examnation do by the traffic saffty product quality supervision testing center of china .