Traffic lights are important equipment to maintain road order and safety, so the quality of traffic lights is also very important. In order to avoid traffic jams and serious traffic accidents caused by unlit traffic lights, it is necessary to carry out corresponding inspections on whether the traffic lights are qualified? The following is the scope of inspection for traffic lights:
1. The traffic lights are not standardized. Choosing composite lights, unreasonable arrangement order, insufficient brightness, non-standard chromaticity, etc. must follow strict specifications. In addition, the color of the countdown number and the color of the traffic light are different.
2. The position, height and angle of traffic lights are improper. The position of the traffic signal light should be too far away from the entrance line of the intersection. If the pole position of a large-scale intersection is unreasonable, the position of the equipment may be blocked if it exceeds the standard height.
3. The stage and timing are unreasonable. At some intersections with low traffic volume and no need to set up multi-phase traffic flow, it is not necessary to set up traffic lights, but only need to set up direction indicators. The yellow light lasts less than 3 seconds, the time allocation of crosswalk traffic lights is short, and the crosswalk time is short.
4. The traffic lights are not in harmony with the signs. The information of the traffic signal light is inconsistent with the information of the marking line, or even hostile to each other.
5. The traffic signal lights are not set according to the conditions. The intersection has heavy traffic flow and many conflict points, but there is no traffic signal light; there is no auxiliary light at the intersection with heavy traffic flow and good conditions; there is a pedestrian crossing line at the light-controlled intersection, but there is no crosswalk light; pedestrians do not press the lights for the second time. Condition setting.
6. Disadvantages of traffic lights. The traffic signal light cannot flash normally, causing the traffic signal light to stay off for a long time and flash in a single color.
7. Lack of supporting traffic signs and markings. Where signs or markings are installed at intersections or road sections controlled by traffic lights, there is no or lack of signs or markings.
If the traffic signal lamp is qualified, the above problems will not occur, so when we check whether it is qualified, we also need to test according to the above aspects.
