Guide To: ECE R77 - Parking Lamps (Front and Rear)

UN ECE R77, or Regulation No. 77 of the Economic Commission for Europe of the United Nations, is a regulation that specifies the requirements for the installation and performance of daytime running lights (DRL) for power-driven vehicles and their trailers. These devices are used to improve visibility of vehicles during the day, especially in poor weather conditions.

UN ECE R77 applies to DRL that are either stand-alone or built into other light units, such as combination or multi-function lights. The regulation specifies the size, shape, color, and photometric performance of DRL. It also specifies the test methods that must be used to verify that DRL meet the requirements of the regulation.

UN ECE R77 is recognized by many countries around the world. This means that DRL that have been approved under UN ECE R77 can be used on vehicles in these countries.

Here are some of the key requirements of UN ECE R77:

DRL must be white or yellow in color. DRL must have a minimum photometric performance. DRL must be mounted at a height of at least 250 mm and not more than 1,500 mm above the road surface. DRL must be mounted at a distance of at least 400 mm from the side of the vehicle. UN ECE R77 is an important regulation that helps to improve the safety of vehicles on the road. By requiring DRL to meet certain standards, the regulation helps to ensure that these devices are effective in improving visibility of vehicles during the day, especially in poor weather conditions.

Here are some additional points about UN ECE R77:

DRL must be marked with the UN ECE R77 approval number. DRL must be installed in a way that ensures that they are visible to other road users. DRL must be switched on automatically when the engine is started.