Underride regulations from the UN, Number 58:
E/ECE/324 E/ECE/TRANS/505 } Rev.1/Add.57/Rev.2 Regulation No. 58 page 3 Regulation No. 58 UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:
I. REAR UNDERRUN PROTECTIVE DEVICES (RUPDs)
II. VEHICLES WITH REGARD TO THE INSTALLATION OF AN RUPD OF AN APPROVED TYPE
III. VEHICLES WITH REGARD TO THEIR REAR UNDERRUN PROTECTION (RUP
This will take some careful review to understand the relevance and significance of this United Nations underride regulation.
This is what John Creamer told me today:
There is a UN Regulation (No. 58) on rear underrun protection. In fact, a German-sponsored amendment to increase the stringency of this regulation (the 03 series of amendments) entered into force today, having been adopted by WP.29 last November. The new requirements become mandatory starting from September 2019.
However, UN R58 is a type approval regulation not applicable under the US system. For a regulation to be established that could apply outside the type approval world, a signatory to the 1998 Agreement would have to propose working on one. In principle, the United States could make such a proposal to WP.29.