What is ISO 21755 ‑ 1 - SHED test procedure for motorcycles about?
ISO 21755 is a series of international standards on motorcycles that specifies the basic measurement method by using the SHED (Sealed Housing for Evaporative Determination) test procedure for evaporative emissions from motorcycles.
ISO 21755 ‑ 1 is the first part of the ISO 21755 series of documents that is applicable to motorcycles equipped with a spark-ignition engine (four-stroke engine, two-stroke engine or rotary piston engine).
BS ISO 21755-1:2019 history
2019BS ISO 21755-1:2019 Motorcycles. Measurement method for evaporative emissions - SHED test procedure