This standard specifies the terms and definitions of the main terms and definitions of the dimensions, weight, performance and testing of the moped body and gasoline engine.
GB 4731-1984 history
2008GB/T 5359.2-2008 Term for motorcycles and mopeds.Part 2:Performance of vehicles
1996GB/T 5359.2-1996 Term for motorcycles and mopeds--Performance of vehicles