UN ECE R93 tests cover a series of tests carried out in accordance with the relevant regulation for the evaluation of vehicles in the categories specified in the regulation in terms of front underside protection devices (FUPDs).
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 93 of the United Nations Economic Commission for Europe (UN/ECE) — It covers the uniform provisions regarding the approval of the following and the tests applied accordingly;
The purpose of this Regulation is to provide effective protection for vehicles of category M1 or N1 against being lifted under the vehicles specified in paragraph 1 of this Regulation in the event of a frontal collision.
Front underrun protection devices (FUPD) must provide adequate resistance to forces applied parallel to the longitudinal axis of the vehicle and also meet certain dimensional requirements. These shall be demonstrated in accordance with the test procedure and conditions set out in Annex 5 to this Regulation.
The cross-sectional height of the FUPD crossmember must not be less than 2 mm for vehicles of category N100 and 3 mm for vehicles of category N120. The side ends of the traverse should not lean forward or have a sharp outer edge; this condition is fulfilled when the lateral ends of the crossmember are externally rounded and have a radius of curvature of not less than 2,5 mm.
The device can be designed in such a way that its position in front of the vehicle can be changed. In this case, there would be a guaranteed method of fixing it in its service location to prevent any unintentional location changes. The operator must be able to change the position of the device by applying a force not exceeding 40 daN;
The outermost surfaces of each front guard must be substantially flat or horizontally corrugated, except that the domed bolt or rivet heads may protrude up to a distance not exceeding 10 mm from the surface.
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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