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WP.29/2026/152

UN R143: Proposal for a Supplement 2

Source(s)

GRPE

Date

9 Apr 2026

Status

Adopted by WP.29

Subject

Impact

Original text | Supplement 2

Meeting(s)

WP.29 | Session 199 | 22-26 Jun

Agenda item 4.11.9. Proposal for Supplement 2 to UN Regulation No. 143 (Heavy-Duty Dual Fuel Retrofit Systems)

Proposal to amend paragraph 1.1., footnote 1 to update the reference to the Consolidated Resolution on the Construction of Vehicles (R.E.3.); amend paragraph 4.4.1. to establish requirements for a dual-fuel operating mode indicator including visual and audio signals, with restrictions on indicator design and safety alert priority; amend paragraph 4.4.1.1. to require warnings when engine operation is forced to diesel mode and signals to an ADS feature; and amend paragraph 7.1. to specify OBD system requirements for diesel and dual-fuel operation modes, including malfunction detection and driver notification procedures.

Downloads

UNECE server

Related documents

Excerpts from session reports

GRPE | Session 94 | 17-19 Mar

40. The co-Chair of the TF-AVRS introduced ECE/TRANS/WP.29/GRPE/2026/18, ECE/TRANS/WP.29/GRPE/2026/19, ECE/TRANS/WP.29/GRPE/2026/20 (as amended by GRPE-94-34 and during the session), ECE/TRANS/WP.29/GRPE/2026/21, ECE/TRANS/WP.29/GRPE/2026/22 and ECE/TRANS/WP.29/GRPE/2026/23 (as amended by GRPE-94-31 and GRPE-94-54).

41. GRPE adopted ECE/TRANS/WP.29/GRPE/2026/18 and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2026 sessions as draft new supplement to the 03 series of amendments to UN Regulation No. 24 (Diesel Smoke).

42. GRPE adopted ECE/TRANS/WP.29/GRPE/2026/19 and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2026 sessions as draft new supplement to UN Regulation No. 85 (Power Measurement of Internal Combustion Engines and Electric Motors).

43. GRPE adopted ECE/TRANS/WP.29/GRPE/2026/20, as amended by GRPE-94-34 and during the session, and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2026 sessions as draft new supplement to UN Regulation No. 115 (Liquefied Petroleum and Compressed Natural Gas Retrofit Systems).

44. GRPE adopted ECE/TRANS/WP.29/GRPE/2026/21 and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2026 sessions as draft new supplement to UN Regulation No. 133 (Recyclability of motor vehicles).

45. GRPE adopted ECE/TRANS/WP.29/GRPE/2026/22 and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2026 sessions as draft new supplement to UN Regulation No. 143 (Heavy-Duty Dual Fuel Retrofit Systems).

46. GRPE adopted ECE/TRANS/WP.29/GRPE/2026/23, as amended by GRPE-94-31 and GRPE-94-54, and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2026 sessions as draft new supplement to the 01 series of amendments of UN Regulation No. 177 (System Power).