公开(公告)号：US3739332A

公开(公告)日：1973-06-12

申请号：US3739332D

申请日：1971-07-08

Applicant: MARTINEZ R

Inventor： MARTINEZ R

IPC: G08G1/08

CPC classification number: G08G1/08

Abstract: A vehicle moving along a traffic lane towards a light controlled intersection is sensed by a first vehicle detector at a location remote from the intersection, and an ''''advance call'''' signal is generated by the first vehicle detector. The advance call signal is impressed immediately upon a traffic controller, and a capacitor or other storage means continues to hold the signal until the vehicle is sensed by a second or principal vehicle detector located close to the intersection. The traffic lights are thereby changed to green in advance of the vehicle approaching the intersection, such that the vehicle need not stop or slow down unduly. In the event that other traffic exists that might conflict with the vehicle, call signals from vehicle detectors of conflicting phases of the controller will inhibit the advance call signal causing the controller to operate in a normal mode without the advance call signal. Where a street or highway has two or more spaced apart intersections, a vehicle detector may serve in a dual capacity of providing a call signal for the controller of the first intersection and an advance call signal for the controller of the next intersection.

Abstract translation: 沿着行车道朝向轻的交叉路口行驶的车辆由远离交叉口的位置处的第一车辆检测器检测，并且由第一车辆检测器产生“提前呼叫”信号。 提前呼叫信号立即压在交通控制器上，并且电容器或其他存储装置继续保持信号，直到车辆被位于靠近十字路口的第二或主要车辆检测器感测到。 因此，在车辆接近十字路口之前，交通信号灯被改变为绿色，使得车辆不必不适当地停止或减慢。 在存在可能与车辆冲突的其他交通事件的情况下，来自控制器冲突相位的车辆检测器的呼叫信号将阻止提前呼叫信号，使得控制器在没有提前呼叫信号的情况下以正常模式操作。 在街道或高速公路具有两个或更多间隔开的交叉路口的情况下，车辆检测器可以以提供第一交叉路口的控制器的呼叫信号和下一交叉路口的控制器的提前呼叫信号的双重能力来服务。