The scope of this SAE Recommended Practice is to establish uniform test procedures and minimum performance criteria for passenger car windshield wiping systems and wiper blades. This recommended practice provides a uniform terminology of windshield wiper system characteristics and phenomena. Also included are guides for the use of engineering layout studies to evaluate system wiped area performance. The test procedures are limited to those tests that can be conducted on uniform test equipment by commercially available laboratory facilities. The test procedures and minimum performance criteria outlined in this recommended practice are based on currently available engineering data. It is the intent that all portions of the recommended practice will be periodically reviewed and revised as additional data regarding windshield wiping system performance are developed.