UN R9 Three-Wheeled Cycle Noise | UN Regulation | UNR 0009 |
UN R28 Audible Warning Devices and Signals | UN Regulation | UNR 0028 |
UN R41 Motorcycle Noise | UN Regulation | UNR 0041 |
UN R51 Vehicle Noise Emissions | UN Regulation | UNR 0051 |
UN R59 Replacement Silencing Systems | UN Regulation | UNR 0059 |
UN R63 Two-wheeled Moped Noise | UN Regulation | UNR 0063 |
UN R117 Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance | UN Regulation | UNR 0117 |
Quiet Road Transport Vehicles | Regulatory Project | QRTV-GTR |
UN R138 Quiet Road Transport Vehicles | UN Regulation | UNR 0138 |
Vehicle Interior Noise Levels | Interior Noise |