| Download: GRB/2013/6 | from UNECE: | .pdf format | |
| Download: GRB/2013/6/Add.1 | from UNECE: | .pdf format | |
| Download: GRB/2013/6/Corr.1 | from UNECE: | .pdf format |
| 5. | Regulation No. 92 (Replacement exhaust silencing systems for motorcycles) |
| 7. (c) | Additional sound emission provisions for Regulations Nos. 9, 63 and 92 |