a temporary signal system wherein a pair of signal stands are installed at spaced locations adjacent a traffic restriction area . each stand has at least red and green lights which light or flash for predetermined time periods to control vehicle traffic passing the restriction area . the signal stands include timers for counting actual time and providing the actual time , controllers for producing a flashing control signal for a selected red or green light upon reception of a time signal provided by the timer when the controller is in a flashing operation condition , and a lighting driver for permitting the selected red or green light to flash upon reception of the flashing control signal from the controller . the stands have an operation starting arrangement for initiating operation of the controllers of both of the stands at the same time , or a signal transmission arrangement for transmitting the operating condition data between the stands so that the lights of both stands are operated in a controlled and synchronized relationship with each other .