UN ECE R157 tests cover a series of tests performed in accordance with the relevant regulation for the evaluation of vehicles in the categories specified in the regulation in terms of Automatic Lane Departure Systems (ALKS) equipment.
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 No. 157 of the United Nations Economic Commission for Europe (UN/ECE) — It covers the uniform provisions regarding the approval of vehicles related to Automatic Lane Keeping Systems and the tests applied accordingly.
This Regulation applies to type-approval for Automatic Lane Keeping System for vehicles in Category M 1. The purpose of the regulation is to create uniform provisions regarding the approval of vehicles in relation to Automatic Lane Keeping Systems (ALKS). ALKS controls the vehicle's lateral and longitudinal movement for extended periods of time without further driver commands. ALKS is a system in which the activated system is in primary control of the vehicle.
This Regulation is the first regulatory step for an automated driving system in traffic and therefore provides innovative provisions aimed at addressing the complexity associated with the assessment of system safety. It includes administrative provisions, technical requirements, inspection and reporting provisions, and test provisions conforming to type approval.
ALKS can be activated under certain conditions on roads where pedestrians and cyclists are prohibited and equipped with a physical separation that, by design, divides traffic moving in opposite directions and prevents traffic from intercepting the vehicle. In a first step, the original text of this Regulation limits the operating speed to a maximum of 60 km/h and passenger cars (M 1 vehicles).
This Regulation contains general requirements for system safety and fail-safe response. When ALKS is activated, it will perform the driving task instead of the driver, that is, it will manage all situations including malfunctions and will not endanger the safety of the vehicle occupants or other road users. However, there is always a possibility that the driver may override the system at any time.
The regulation also lays down requirements on how to safely transfer the driving task from ALKS to the driver, including the system's ability to stop if the driver does not respond appropriately.
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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