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Event Data Recorder (EDR)
Vehicle’s EDR, or event data recorder, commonly known as "black box", is used for data collection and storage in unexpected situations such as vehicle collisions.
According to the latest revision of the motor vehicle type approval framework EU 2018/858, from 6 July 2022, new M1,M2,M3,N1,N2,N3 types certified in unlimited series will need to comply with Regulation (EU) 2022/545, and UN R160.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.
ATIC experts are working under designated technical services in Europe to conduct Initial Assessment, Witness Testing and CoP assessment as authorized inspectors under authorities including e/E4 Netherland, e/E5 Sweden, e/E13 Luxembourg, e/E24 Ireland, e/E49 Cyprus.
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General Steps
Initial Assessment
The first application for a manufacture to an authority generally requires initial assessment. In most of the cases ATIC experts will conduct the onsite initial assessment. Some authority can exempt onsite initial assessment by accepting ISO/IATF certificates.
Information Document
According to EU/UN Regulations information document including sufficient drawings of the vehicle/component shall be prepared and submitted to technical service by the manufacture/applicant. ATIC experts also can support manufacture/applicant to prepare information document based on CAD drawings and vehicle/component specifications.
Manufacture should pay attention to Annex 6-Special requirements to be applied to the safety aspects of complex electronic vehicle control systems.
Witness testing
In most of the cases ATIC experts will witness testing in 3rd party testing lab and draft technical reports. If the manufacture is equipped with competent facilities it's also possible to make witness testing using manufacture's facility. ATIC experts will conduct lab assessment before witness testing and draft lab assessment report.
Approval
Information Documents, Technical Reports as well as other technical documents if needed will be submitted to relevant authority. Authority will review and issue type approval certificate if all the documents, tests, drawings fulfill the regulations and requirements. A typical lead-time for this review process is 4 to 6 weeks. After the approval the CoP audit/test maybe conducted based on regulations and authorities' requirements.
Information documents of UN R160
1. A description of the vehicle type with regard to 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;
2. The data elements and format stored in the EDR;
2. The data elements and format stored in the EDR;
3. Instructions for retrieving data from the EDR.
▸ Data Capture
▸ Data Capture
▸ Crash Test Performance and Survivability
▸ Crash Test Performance and Survivability
The EDR non-volatile memory buffer shall accommodate the data related to at least two different events.
Conditions for triggering recording of data
An event shall be recorded by the EDR if one of the following threshold values is met or exceeded:
- Change in longitudinal vehicle velocity more than 8 km/h within a 150 ms or less interval.
- Change in lateral vehicle velocity more than 8 km/h within a 150 ms or less interval.
- Activation of Non-reversible occupant restraint system.
- Activation of Vulnerable road user secondary safety system. (If applicable)
Conditions for triggering locking of data
n the circumstances provided below, the memory for the event shall be locked to prevent any future overwriting of the data by subsequent event.
- In all the cases where a non-reversible occupant restraint system is deployed.
- In the case of a frontal impact, if the vehicle is not fitted with a non-reversible restraint system for front impact, when the vehicle’s velocity change in x-axis direction exceeds 25 km/h within 150ms or less interval.
- Activation of Vulnerable road user secondary safety system.
Power failure
Data recorded in non-volatile memory is retained after loss of power.
- The data shall be retrievable even after an impact of a severity level set by UN Regulations Nos.94, 95 or 137.
- It shall not be possible to deactivate the Event Data Recorder.
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