| Download: GRPE/2017/1 | from UNECE: | .pdf format | .docx format |
| Download: GRPE/2017/1/Add.1 | from UNECE: | .pdf format | .docx format |
| 8. | Draft Regulation on uniform provisions concerning the approval of Heavy Duty Dual-Fuel Engine Retrofit Systems (HDDF-ERS) to be installed on heavy duty diesel engines and vehicles |