Regulation No. 51 (Noise of M and N categories of vehicles)
Documentation
GRB-60-01
Proposal for additional amendments to the draft the 03 series of amendments to Regulation No. 51
Proposal for additional amendments to the draft the 03 series of amendments to Regulation No. 51
Proposal from the informal working group on Un Regulations Nos. 51 and 59 for further amendments to the draft 03 series of amendments to UN R51 (document GRB/2014/5).
GRB-60-15
China Proposal for a harmonized M1 classification and limits (CATARC)
China Proposal for a harmonized M1 classification and limits
Comparison ECE R51.03 (as adopted by GRB) versus the draft China regulation GB1495 for M1 vehicle noise and proposal for reconciling apparent differences between them.