Guide To: ECE R166 - Vulnerable Road Users in Front and Side Close Proximity

UN ECE R166, or Regulation No. 166 of the Economic Commission for Europe of the United Nations, is a regulation that specifies the requirements for event data recorders (EDRs) for power-driven vehicles. These devices are used to record data about the vehicle's speed, braking, and acceleration before, during, and after a crash.

UN ECE R166 applies to all new passenger cars, vans, trucks, buses, and trailers that are manufactured after 1 July 2024. The regulation specifies the requirements for the EDR, including the data that must be recorded, the format of the data, and the period of time that the data must be stored. It also specifies the test methods that must be used to verify that vehicles meet the requirements of the regulation.

Here are some of the key requirements of UN ECE R166:

The EDR must record data about the vehicle's speed, braking, and acceleration before, during, and after a crash. The EDR must record data about the deployment of airbags and other safety features. The EDR must record data about the operation of the vehicle's electronic systems. The EDR must store data for at least 24 hours after a crash. UN ECE R166 is an important regulation that helps to improve the safety of vehicles on the road. By requiring vehicles to meet certain standards, the regulation helps to ensure that these vehicles are equipped with a system that can record data about the vehicle's performance before, during, and after a crash. This data can be used to investigate the causes of crashes and to improve the safety of vehicles in the future.

Here are some additional points about UN ECE R166:

Vehicles that meet the requirements of UN ECE R166 are marked with the UN ECE R166 approval number. Vehicles that do not meet the requirements of UN ECE R166 may not be sold or registered in some countries. The requirements of UN ECE R166 are being continuously updated to reflect the latest research on vehicle safety.