This international standard defines terms relating to dimensions of motor vehicles and towed vehicles. It does not deal with methods of measurement, the units used in reporting the results or the accuracy required or the order of magnitude of the dimensions defined. NOTE__ Other terms , definitions and symbols are given in the following international standards : ISO3877/1, Tyres, valves and tubes __ List of equivalent terms __ part 1 : Tyres. ISO3877/11, Tyres, valves and tubes __ List of equivalent terms __ part 11 : Tyres valves. ISO3877/111, Tyres, valves and tubes __ List of equivalent terms __ part 111: Tubes. ISO3911, Wheels/rims- Nomenclature , designation, marking, and units of measurement. ISO4131, Road vehicles – Dimensional symbols for passenger cars.1). ISO 4223/1, Definitions of some terms used in the tyre industry – part 1 : Pneumatic tyres.