UN ECE R131 tests cover a series of tests carried out in accordance with the relevant regulation for the evaluation of M2 , N2 , M3 and N3 (1) category vehicles with an onboard system to prevent or mitigate the severity of a rear-end collision in the lane.
ECE regulations define cross-border technical regulations for establishing approval or uniform approval procedures for motor vehicles and motor vehicle parts. Automated commercial vehicles are already fully eligible for approval only through appropriate individual measures in the country in which they will be used. What is missing is a set of rules at the international ECE level.
Regulation (UN/ECE) No. 131 of the United Nations Economic Commission for Europe — covers the uniform provisions for the approval of motor vehicles and the tests applied accordingly with regard to Advanced Emergency Braking Systems (AEBS).
The purpose of this Regulation is to establish uniform provisions for advanced emergency braking systems (AEBS) fitted to motor vehicles of categories M 2 , M 3 , N 2 and N 3 used primarily in road conditions.
In general, although these categories of vehicles will benefit from the installation of an advanced emergency braking system, there are subgroups where the benefit is rather uncertain as they are primarily used in conditions other than road conditions (e.g. buses with standing passengers, i.e. Classes). I, II and A ( 1 ) ). Whatever the advantage, there are other subgroups where AEBS will be technically difficult to install (eg sensor location in G category vehicles and special-purpose vehicles, etc.).
In addition, systems for vehicles not equipped with pneumatic rear axle suspension require the integration of advanced sensor technology to take into account the variation of the vehicle's tilt angle. Contracting Parties wishing to apply this Regulation to these instruments must allow sufficient time for this.
The system will automatically detect a possible frontal collision, give a warning to the driver, and if the driver does not respond to the warning, it will activate the vehicle braking system to slow the vehicle in order to avoid or reduce the severity of a collision.
The system will only operate in driving situations where braking would reduce or prevent the severity of an accident and will not take any action under normal driving conditions.
Within the scope of the regulation, many mechanical, dynamic and environmental tests are carried out as well as measurements for the approval of the relevant equipment. For tests to be considered successful, test results must meet regulatory requirements.
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