Method for controlling signal system for traffic control, involves controlling display lamp for displaying remaining time of signal light and utilizing signal for displaying remaining time of two signal lights

摘要

The method involves controlling a display lamp for displaying remaining time of a signal light (2) and utilizing a signal for displaying the remaining time of two signal lights (1,3). The former signal light is utilized for displaying a caution period for displaying the remaining time of the both signal lights. An independent claim is also included for a signal system, which has a display device.