Motor cycles

US test cycle for motorcycles has already been shown on Fig. 4.3.  In Europe and India, different test cycles have been and are being followed. However, there is an attempt to harmonize the test cycle all over the world and a world motorcycle emission test cycle (WMTC) as shown in Fig 4.7 has been developed. European Union countries have now defined emission test limits as an alternative to the European test cycle, ECE-40. More and more countries are expected to adopt WMTC.