| UN R13 Heavy-Duty Braking | Heavy-Duty Vehicle Braking | Uniform Provisions Concerning the Approval of Vehicles of Categories M, N and O with regard to Braking Heavy-Duty Braking Heavy-Duty Vehicle Braking UN Regulation No. 13 UN R13 | UNR | 13 | |
| UN R13-H Light Vehicle Braking | Light-Duty Vehicle Braking | Uniform Provisions Concerning the Approval of Passenger Cars with regard to Braking Light Vehicle Braking Light-Duty Vehicle Braking UN Regulation No. 13-H UN R13-H | UNR | 13 | |
| UN R78 Motorcycle Braking | Motorcycle and Moped Braking | Uniform Provisions Concerning the Approval of Vehicles of Categories L1, L2, L3, L4, and L5 with regard to Braking Motorcycle Braking Motorcycle and Moped Braking UN Regulation No. 78 UN R78 | UNR | 78 | |
| UN R79 Steering Equipment | Steering Equipment | Uniform Provisions Concerning the Approval of Vehicles with regard to Steering Equipment Steering Equipment Steering Equipment UN Regulation No. 79 UN R79 | UNR | 79 | |
| UN R90 Replacement Brake Components | Replacement Brake Linings, Discs, and Drums | Uniform provisions concerning the approval of replacement brake lining assemblies, drum brake linings and discs and drums for power-driven vehicles and their trailers <p>UNECE R90, covering key replacement components for brakes, is closely tied to UNECE R13/R13-H and R78 governing brake systems for commercial/passenger vehicles and motorcycles, respectively. The drum-brake lining provisions apply specifically to medium and heavy vehicles and trailers.</p> <p>While this rule addresses situations specific to replacement brake linings, these products may alternatively be approved through UNECE R13/13-H or R78. Consequently, products approved under the above rules do not require subsequent reapproval under UNECE R90 for use in vehicle maintenance.</p> <p>However, such brake components that have not been approved under UNECE R13 or R78 and which are intended for vehicles approved under those rules must comply with UNECE R90.</p> Replacement Brake Components Replacement Brake Linings, Discs, and Drums UN Regulation No. 90 UN R90 | UNR | 90 | |
| UN R130 Lane-departure Warning | Lane Departure Warning Systems | Regulation on uniform provisions concerning the approval of motor vehicles with regard to the Lane Departure Warning System Lane-departure Warning Lane Departure Warning Systems UN Regulation No. 130 UN R130 | UNR | 130 | |
| UN R131 Advanced Emergency Braking | Advanced Emergency Braking Systems | Uniform provisions concerning the approval of motor vehicles with regard to advanced emergency braking systems Advanced Emergency Braking Advanced Emergency Braking Systems UN Regulation No. 131 UN R131 | UNR | 131 | |
| UN R139 Brake Assist Systems | Brake Assist Systems | Uniform provisions concerning the approval of passenger cars with regard to brake assist systems Project to separate brake assist systems provisions from UN R13-H and into a new UN Regulation. Brake Assist Systems Brake Assist Systems UN Regulation No. 139 UN R139 | UNR | 139 | |
| UN R140 ESC Systems | Electronic Stability Control Systems | Uniform provisions concerning the approval of passenger cars with regard to electronic stability control systems This regulation was established through the extraction of ESC provisions from UN Regulation 13-H. ESC Systems Electronic Stability Control Systems UN Regulation No. 140 UN R140 | UNR | 140 | |
| UN R152 Light Vehicle AEBS | Automatic Emergency Braking for M1/N1 vehicles | Uniform provisions concerning the approval of motor vehicles with regard to the Advanced Emergency Braking System (AEBS) for M<sub>1</sub> and N<sub>1</sub> vehicles Light Vehicle AEBS Automatic Emergency Braking for M1/N1 vehicles UN Regulation No. 152 UN R152 | UNR | 152 | |
| UN R155 Cybersecurity | Cyber Security and Cyber Security Management | Uniform provisions concerning the approval of vehicles with regards to cyber security and cyber security management system Cybersecurity Cyber Security and Cyber Security Management UN Regulation No. 155 UN R155 | UNR | 155 | |
| UN R156 SW Updates | Software Update Processes and Management Systems | Uniform provisions concerning the approval of vehicles with regards to software update and software update management system SW Updates Software Update Processes and Management Systems UN Regulation No. 156 UN R156 | UNR | 156 | |
| UN R157 Automated Lane-Keeping Systems | Automated Lane-Keeping Systems (ALKS) | Uniform provisions concerning the approval of vehicles with regards to Automated Lane Keeping System Automated Lane-Keeping Systems Automated Lane-Keeping Systems (ALKS) UN Regulation No. 157 UN R157 | UNR | 157 | |
| UN R171 DCAS | Driver-Control Assistance Systems (DCAS) | DCAS Driver-Control Assistance Systems (DCAS) UN Regulation No. 171 UN R171 | UNR | 171 | |
| UN R175 ACPE | Acceleration Control for Pedal Error | ACPE Acceleration Control for Pedal Error UN Regulation No. 175 UN R175 | UNR | 175 | |
| UN R178 ELKS | Emergency Lane-Keeping Systems | Uniform provisions concerning the approval of motor vehicles with regard to the Emergency Lane Keeping Systems (ELKS) for M<sub>1</sub> and N<sub>1</sub> vehicles This topic includes 2013-2016 deliberations on the potential benefits of lane-keeping assistance systems and a 2024 proposal from Australia to establish a new UN Regulation based on <a href="https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=uriserv%3AOJ.L_.2021.133.01.0031.01.ENG&toc=OJ%3AL%3A2021%3A133%3ATOC" target="_blank">Regulation (EU) 2021/646 of 19 April 2021</a>. ELKS Emergency Lane-Keeping Systems UN Regulation No. 178 UN R178 | UNR | 178 |