| 摘要 |
<p>Disclosed is a traffic signal comprising the conventional indicator light of a blue light, a yellow light, and a red light, wherein the time at which a blue signal changes to a yellow signal can be inexpensively and reliably notified in advance to a driver or the like without adding another means such as an auxiliary traffic signal, so that a very smooth and accident-free traffic is possible, and particularly, the driver can confirm the advance notice of the lamp change instantaneously. Specifically disclosed is a traffic signal which turns on or turns off the indicator light of a blue light, a yellow light, and a red light by means of a program predetermined by a control circuit, wherein the blue light can be turned on in at least two types of different display modes, which can be distinguished by vision, and when the blue light is turned on, the two types of display modes are switched and displayed while the blue light is turned on.</p> |
