event of a frontal collision R95 — protection of the occupants in the event of a lateral collision R116 — protection of motor vehicles against unauthorized use R129 — enhanced child restraint systems (ECRS) Environmental compatibility R10 — electromagnetic compatibility R15 — emissions and fuel consumption (superseded by R83, R84 and R101) R24 — engine power measurement, smoke emissions, engine type approval R51 — noise emissions R68 — measurement of the maximum speed R83 — emission of pollutants according to engine fuel requirements R84 — measurement of fuel consumption R85 — electric drive trains — measurement of the net power and the maximum 30 minutes power of electric drive trains R100 — approval of battery electric vehicles with regard to specific requirements for the construction, Functional Safety and hydrogen emission. R101 — measurement of the emission of carbon dioxide and fuel consumption R117 — rolling sound emissions of tyres Tyres and wheels R30 — Tyres for passenger cars and their trailers R54 — Tyres for commercial vehicles and their trailers R64 — Temporary use spare unit, run flat tyres, run flat-system and tyre pressure monitoring R75 — Tyres for motorcycles/mopeds R88 — Retroreflective tyres for two-wheeled vehicles R106 — Tyres for agricultural vehicles R108 — Retreaded tyres for passenger cars and their trailers R109 — Retreaded tyres for commercial vehicles and their trailers R124 — Replacement wheels for passenger cars Automated/autonomous and connected vehicle regulations R155 — cyber security R156 — software updates R157 — automated lane keeping system Brake R90 — ECE Regulation 90 North America The most notable non-signatory to the 1958 Agreement is the United States, which has its own Federal Motor Vehicle Safety Standards and does not recognise UN type approvals. However, both the United States and Canada are parties to the 1998 Agreement. UN-specification vehicles and components which do not also comply with the US regulations therefore cannot be imported to the US without extensive modifications. Canada has its own Canada Motor Vehicle Safety Standards, broadly similar to the US FMVSS, but Canada does also accept UN-compliant headlamps and bumpers. The impending Comprehensive Economic and Trade Agreement between Canada and the European Union could see Canada recognise more UN Regulations as acceptable alternatives to the Canadian regulations. Canada currently applies 14 of the 17 ECE main standards as allowable alternatives - the exceptions at this point relate to motorcycle controls and displays, motorcycle mirrors, and