Road traffic signals are essential tools for preserving law and order on the roads, so their quality is critical. It is crucial to confirm that the road traffic signals are up to code in order to prevent traffic bottlenecks and major collisions brought on by broken lights.
The inspection scope for evaluating a traffic signal light’s eligibility is as follows:
1. Does the traffic signal light adhere to legal requirements?
Strict Requirements for Traffic Signal Arrangement, Brightness, and Color: There are stringent requirements for traffic signal arrangement, brightness, and color. Furthermore, the road traffic signals’ color and the countdown timer’s digit color must coincide.
2. Traffic Signal Position, Height, and Viewing Angle:
Excessive heights may obstruct equipment if road traffic signals are too far from the intersection’s approach lines or if the pole positions at large intersections are poorly selected.
3. Phase and Timing of Traffic Signal:
Directional indicator lights may be adequate at intersections with little traffic and where multi-phase traffic flow is not necessary. Avoid unscientific setups, such as yellow light durations less than 3 seconds, short pedestrian crossing signal durations, or short pedestrian crossing time.
4. Traffic Signal and Sign Coordination:
Inconsistent or contradictory information between traffic signal markings and road markings are a problem.
5. Traffic Signal Setup According to Standards:
Traffic signals must be set up correctly. If an intersection has high traffic volume and many conflict points but lacks road traffic signals, it is considered substandard; a high-traffic, well-maintained intersection without auxiliary lights is also substandard; an intersection with pedestrian crossings but no pedestrian lights is also substandard; and pedestrian crossing lights not set according to standards are also substandard.
6. If road traffic signals cannot flash properly, causing them to remain off for extended periods or flash only a single color, they are substandard.
Standards for Judging the Quality of Traffic Signal Lights
1. Power Supply:
The main aspects of a traffic signal light’s power supply are power factor and the charging and discharging requirements of the flashing yellow light at night. For testing, the power supply can be sealed in a black plastic housing and used outdoors in all weather conditions to observe its performance.
2. Housing Material:
Generally speaking, generic traffic signal lights have housing that is only 140 mm thick. Pure PC, ABS, recycled materials, and mixed materials are examples of materials. Higher quality is typically associated with pure PC housings.
3. LED Performance:
Because of their many benefits, including their long lifespan, low power consumption, small size, high brightness, low heat generation, and environmental friendliness, LED lights are frequently used in traffic signal lights. Consequently, this is an important consideration when evaluating a traffic signal light’s quality. Generally, the size of the LED chip determines the cost of the traffic signal light.
4. National Standards:
Traffic signal lights must be inspected, and the inspection report is valid for two years. Even for standard traffic signal light products, obtaining an inspection report will cost no less than 200,000 yuan. Therefore, the existence of relevant national standard reports is also an aspect used to assess the quality of road traffic signals. You can call the Traffic Product Quality Supervision and Testing Center of the Ministry of Public Security to verify the authenticity by providing the test report number and company name.
Road traffic signals are a crucial aspect of urban management, and their importance is undeniable. Properly installed road traffic signals not only help increase traffic flow capacity and reduce traffic hazards but also effectively reduce traffic energy consumption and urban air pollution.
If road traffic signals meet standards, the above problems will not occur. Therefore, when inspecting their compliance, we should also check according to the above aspects.
Qixiang Traffic is a high-tech enterprise integrating the development, production, installation, and technical services of urban road traffic signals and intelligent transportation products. The company has obtained numerous patents and test reports. We have been specializing in wholesale road traffic signals for 20 years and have a complete intelligent production line. Please feel free to call us if you need our products.
Post time: Feb-03-2026
