Road vehicles; Rear-window washing and wiping systems for passenger cars; Test methods

This technical specification outlines the prescribed procedures for evaluating the performance of washing and wiping systems installed in the rear windows of passenger vehicles. It establishes a standardized methodology to ensure consistent testing across different manufacturing environments and product designs. The document details the operational parameters required to assess the effectiveness of fluid distribution and the mechanical action of wiper blades on the rear glazing. Various test conditions are defined to simulate real-world usage scenarios, focusing on coverage, clarity, and system reliability under specific constraints. By following these defined steps, manufacturers and testing laboratories can verify that rear window cleaning equipment meets necessary functional criteria. The approach facilitates comparative analysis of different system configurations while maintaining a uniform benchmark for quality assurance. This framework supports the development of safer and more reliable vehicle designs by providing a clear reference for performance validation during the engineering and production phases.