Comparative Study of Measurement Standards for Regulating Maximum Motorcycle Noise Emission

摘要

This report presents a comparison between three methods for measurement of motorcycle noise emission, namely ECE Regulation 41, ECE Regulation 51 and a method specified by the United States Environmental Protection Agency. All the three methods specify a standard for measurement of noise both from vehicles in motion and stationary vehicles. The methods are compared by applying them for measurements on twelve motorcycles of different sizes. Two to three times more measurements than required by the standards were made. In addition, the complete tests for two motorcycles were repeated at six different occasions.