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  • How does the reward traffic light work ?

    Overall Presentation

    The reward traffic light, also known as behavioral or intelligent traffic light, aims to reduce speeding, improve motorists’ driving behavior, and streamline traffic flow in peri-urban areas and villages. It is based on the principle of rewarding good drivers compared to bad ones when they do not respect the speed limit

    Operation of the Reward Traffic Light

    reward traffic light

    The traffic light remains red, and upon approach by a driver, it will switch from yellow to green provided that the speed limit is respected. If the speed limit is not respected, the light will remain red to halt the driver and thus reduce their speed. The traffic light can be programmed to respond to two speeds: 30km/h and 50km/h. This means it should be installed in areas with speed limits of 30 or 50km/h.

    The traffic light is controlled by a Doppler sensor, which utilizes a speed detection system to calculate the speed of approaching drivers at the reward traffic light. The sensor takes into account the vehicle between 50 and 80 meters before the traffic light to determine if the driver is adhering to the speed limit. Speed can be measured from 2km/h with accuracy to the nearest kilometer.

    If the driver is traveling at a speed higher than the regulation, the light remains red, and the user must stop. However, if the driver adheres to the current speed limit, the light will turn green, and the user can proceed without stopping.


    The reward traffic light must be installed exclusively within urban areas and cannot be placed at intersections or pedestrian crossings as it is not compliant for such installations.

    What WP Signalisation Offers

    WP Signalisation offers its robust and reliable reward traffic light, designed with durable materials resistant to wear over time.

    Power Supply Types

    To meet various market requirements, WP Signalisation has developed 5 types of power supply:

    •  Mains power 220V
    • Solar (110 watts): Solar panels are paired with a lithium battery.
    • Public lighting: The traffic light is powered by the battery during the day, and at night, the lead-acid battery powers the traffic light while the public lighting system recharges the battery.
    • No power supply: A power source must be available.
    • Dual power supply: Solar and public lighting: The traffic light operates using solar power; however, during adverse weather conditions, the public lighting system takes over for continuous operation

    For more information about our reward traffic lights, please contact us via our online form.