UN R160 regulation applies to M1, N1 vehicles equipped with EDR devices. The provisions concern the minimum collection, storage and crash survivability of motor vehicle crash event data. The purpose of these provisions is to ensure that EDR’s record, in a readily usable manner, data valuable for effective crash investigations and for analysis of safety equipment performance (e.g., advanced restraint systems). These data will help provide a better understanding of the circumstances in which crashes and injuries occur and will facilitate the development of safer vehicle designs.

The manufacturer shall provide the following explanatory information about the EDR device:

• The location of the EDR in the vehicle, the triggering parameters, storing capacity and the resistance to high deceleration and mechanical stress of a severe impact;

• The data elements and format stored in the EDR;

• Instructions for retrieving data from the EDR.

1. The EDR non-volatile memory buffer shall accommodate the data related to at least two different events.

2. An event shall be recorded by the EDR if one of the following threshold values is met or exceeded: 

(1) Change in longitudinal or lateral vehicle velocity more than 8 km/h within a 150 ms or less interval. 

(2) Activation of Non-reversible occupant restraint system or vulnerable road user secondary safety system (If applicable).

3. In the circumstances where a non-reversible occupant restraint system or vulnerable road user secondary safety system (if applicable) is deployed, the memory for the event shall be locked to prevent any future overwriting of the data by subsequent event. 

4. Data recorded in non-volatile memory is retained after loss of power. 

5. The data shall be retrievable even after an impact of a severity level set by UN Regulations Nos.94, 95 or 137.

6. The data that are mandatory to be recorded by R160 are shown in the table below:

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