R403 (South Africa)
R403 is a regulation code within the South African National Road Traffic Act pertaining to vehicle fitness and roadworthiness. Specifically, it often refers to the regulation related to the testing and certification of vehicles to ensure they meet the minimum safety standards for operation on public roads. A vehicle deemed not to meet these standards as per R403 may be declared unroadworthy and prohibited from use until necessary repairs or adjustments are made and a new roadworthy certificate is issued. The specific requirements covered by R403 encompass a wide range of vehicle components and systems, including brakes, steering, suspension, lights, tires, and structural integrity. The implementation and enforcement of R403 are critical for maintaining road safety and reducing accidents caused by mechanically defective vehicles.