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Working Document WP.29/2019/121

Document Title GTR 2: Proposal for Amendment 4
Reference Number WP.29/2019/121
Document Date 2 September 2019
Document Posted 2 September 2019
Meeting Session(s)

120. Submitted for consideration and vote, the proposal for Amendment 4 to UN GTR No  2 on the measurement procedure for two wheeled motorcycles equipped with a positive or compression ignition engine with regard to the emissions of gaseous pollutants, CO2 emissions and fuel consumption (ECE/TRANS/WP.29/2019/121, ECE/TRANS/WP.29/2019/122 and ECE/TRANS/WP.29/AC.3/36), subject to the following modification in ECE/TRANS/WP.29/2019/121:

Paragraph to Annex 1: “1.225 Pa” should read “1.225 kPa”.

121. The proposal was adopted on 13 November 2019 by consensus of vote of the following contracting parties present and voting: Australia, Canada, China, the European Union (representing Cyprus, Finland, France, Germany, Hungary, Italy, Lithuania, Luxembourg, the Netherlands, Romania, Slovakia, Slovenia, Spain, Sweden and the United Kingdom), India, Japan, Norway, the Republic of Korea, the Russian Federation, South Africa, Tunisia, Turkey and the United States of America.

122. The representatives from San Marino abstained from voting.


Proposal to further harmonize test procedures for two-wheeled vehicles equipped with conventional combustion engine technology, including restructuring to dedicate separate sections to test types I (tailpipe emission after cold start), II (idle / free acceleration emissions) and VII (energy efficiency). The amendment aligns the GTR with technological progress, including changes related to

  1. reference fuels
  2. temperature conversion
  3. forced induction systems (turbo/super-chargers)
  4. treatment of open/closed systems
  5. test room humidity
  6. CO2 tolerance, and
  7. reference mass of the vehicle.

Document Status Formal WP.29 review
Related Documents
GRPE/2019/12 | GTR 2: Proposal for Amendment 4
GRPE/79/Add.1 | GTR 2: Amendment 4 as approved by GRPE