| UN R18 Unauthorized Vehicle Use Last updated: December 2021 | UNR | 18 |
| UN R26 External Projections Last updated: July 2023 | UNR | 26 |
| UN R34 Fuel Tanks Last updated: February 2023 | UNR | 34 |
| UN R35 Foot Controls Last updated: January 2024 | UNR | 35 |
| UN R36 Bus Construction Last updated: July 2019 | UNR | 36 |
| UN R39 Speedometer Equipment Last updated: April 2024 | UNR | 39 |
| UN R43 Safety Glazing Last updated: April 2024 | UNR | 43 |
| UN R46 Indirect Vision Last updated: April 2024 | UNR | 46 |
| UN R52 Small Bus Construction Last updated: December 2005 | UNR | 52 |
| UN R55 Mechanical Couplings Last updated: January 2024 | UNR | 55 |
| UN R58 Rear Underrun Protection Devices Last updated: September 2021 | UNR | 58 |
| UN R60 Motorcycle Controls Last updated: June 2023 | UNR | 60 |
| UN R61 CV External Projections Last updated: January 2024 | UNR | 61 |
| UN R66 Coach Superstructure Strength Last updated: April 2024 | UNR | 66 |
| UN R67 LPG Equipment Last updated: March 2023 | UNR | 67 |
| UN R71 Tractor Driver's Field of Vision Last updated: March 2023 | UNR | 71 |
| UN R73 CV Lateral Protection Last updated: March 2023 | UNR | 73 |
| UN R81 Motorcycle/Moped Mirrors Last updated: June 2023 | UNR | 81 |
| UN R93 Front Underrun Protection Last updated: January 2023 | UNR | 93 |
| UN R97 Vehicle Alarms Last updated: January 2023 | UNR | 97 |
| UN R102 Close-Coupling Devices Last updated: May 2023 | UNR | 102 |
| UN R105 ADR Vehicles Last updated: April 2024 | UNR | 105 |
| UN R107 Coach and Bus Construction Last updated: April 2024 | UNR | 107 |
| UN R110 CNG/LNG System Components Last updated: April 2024 | UNR | 110 |
| UN R116 Anti-theft and Alarm Systems Last updated: April 2024 | UNR | 116 |
| UN R118 Material Burning Behavior Last updated: January 2024 | UNR | 118 |
| UN R121 Hand Controls, Tell-tales and Indicators Last updated: April 2024 | UNR | 121 |
| UN R122 Heating Systems Last updated: August 2023 | UNR | 122 |
| UN R125 Driver Forward Vision Last updated: April 2024 | UNR | 125 |
| UN R144 Accident Emergency Call Systems Last updated: January 2024 | UNR | 144 |
| UN R147 Agricultural vehicle couplings Last updated: January 2024 | UNR | 147 |
| UN R151 Blind spot detection Last updated: February 2023 | UNR | 151 |
| UN R158 Reversing Motion Last updated: April 2024 | UNR | 158 |
| UN R159 MOIS Last updated: March 2023 | UNR | 159 |
| UN R160 EDR Last updated: April 2024 | UNR | 160 |
| UN R161 Unauthorized Use Devices Last updated: January 2024 | UNR | 161 |
| UN R162 Vehicle Immobilizers Last updated: January 2024 | UNR | 162 |
| UN R163 Vehicle Alarm Systems Last updated: January 2024 | UNR | 163 |
| UN R167 CV Direct Vision Last updated: April 2024 | UNR | 167 |