Document ID: chunk:federal_register_of_legislation:F2021L01518:reg:60:p9
Version: federal_register_of_legislation:F2021L01518
Segment Type: reg
Provision Reference: reg 60 (pt 9/16)
Character Range: 58156–61168

Advanced Emergency Braking Systems (AEBS) pursuant to UN Regulation No. 152 (marked with C for Car to Car. P for Car to Pedestrian). The first two digits of the approval number indicate that the approval was granted in accordance with the requirements of UN Regulation No. 152 in its original form.
       Annex 3

  Special requirements to be applied to the safety aspects of electronic control systems
1. General
This annex defines the special requirements for documentation, fault strategy and verification with respect to the safety aspects of Complex Electronic Vehicle Control Systems (paragraph 2.4. below) as far as this Regulation is concerned.
This annex shall also apply to safety related functions identified in this Regulation which are controlled by electronic system(s) (paragraph 2.3.) as far as this Regulation is concerned.
This annex does not specify the performance criteria for "The System" but covers the methodology applied to the design process and the information which must be disclosed to the Technical Service, for type approval purposes.
This information shall show that "The System" respects, under non-fault and fault conditions, all the appropriate performance requirements specified elsewhere in this Regulation and that it is designed to operate in such a way that it does not induce safety critical risks.
2. Definitions
               For the purposes of this annex,

              2.1. The System" means an electronic control system or complex electronic control system that provides or forms part of the control transmission of a function to which this Regulation applies. This also includes any other system covered in the scope of this Regulation, as well as transmission links to or from other systems that are outside the scope of this Regulation, that acts on a function to which this Regulation applies."

              2.2. "Safety Concept" is a description of the measures designed into the system, for example within the electronic units, so as to address system integrity and thereby ensure safe operation under fault and non-fault conditions, including in the event of an electrical failure. The possibility of a fall-back to partial operation or even to a back-up system for vital vehicle functions may be a part of the safety concept.

              2.3. "Electronic Control System" means a combination of units, designed to co-operate in the production of the stated vehicle control function by electronic data processing. Such systems, often controlled by software, are built from discrete functional components such as sensors, electronic control units and actuators and connected by transmission links. They may include mechanical, electro-pneumatic or electro-hydraulic elements.

              2.4. "Complex Electronic Vehicle Control Systems" are those electronic control systems in which a function controlled by an electronic system or the driver may be over-ridden by a higher-level electronic control system/function. A function which is over-ridden