Proposal to amend UN R86 braking and stability control requirements for Automated Driving Systems:

• Delete para. 1.2.5.,
• Amend para. 2.3. to specify that braking system functions are set out in para. 5.1.2.,
• Amend para. 2.5. to clarify transmission definition and composition,
• Amend para. 2.34.2.1. to define directional control as assisting driver or ADS in maintaining intended direction,
• Amend para. 5.1.2.1. to specify service braking system requirements for control and halting,
• Amend para. 5.1.2.2. to specify secondary braking system requirements including graduated action and steering control,
• Amend para. 5.1.2.3. to specify parking braking system requirements and mechanical locking,
• Amend para. 5.1.4.7. to require verification of electronic braking system status,
• Amend para. 5.2.1.2.1. to specify brake control requirements and return-to-off positions,
• Amend para. 5.2.1.2.7.2. to require independent energy reserves and warning devices,
• Amend para. 5.2.1.26.4. to permit parking brake application after powertrain deactivation and automatic application when vehicle stationary or driver leaves seat,
• Amend para. 5.2.1.26.5. to permit warning actuation delay until parking brake clamping detected,
• Amend para. 5.2.1.31. to specify emergency braking signal generation from service braking system application,
• Amend para. 5.2.2.24.6.3. to require pneumatic and electric control lines and automatic brake application for incompatible trailer connections,
• Amend para. 5.3. to introduce special provisions for vehicles equipped with Automated Driving System,
• Amend para. 5.3.3. to require transmission of warnings and detected faults to ADS before feature activation,
• Insert new para. 5.3.4. to permit disabling braking controls while ADS feature active,
• Insert new Annex 4 para. 1.1.3. permitting dedicated activation methods for vehicles of categories X and Y,
• Insert new Annex 4 para. 1.1.4. requiring manual driving mode testing for ADS-equipped vehicles,
• Amend Annex 19 Part 2 para. 1.1.4.1.4. to specify engine control independence from driver or ADS demand,
• Amend Annex 19 Part 2 para. 1.1.4.1.6. to reference driver or ADS selected locking,
• Amend Annex 21 para. 2.1.1. to specify vehicle stability function requirements and transmission to ADS while active,
• Amend Annex 21 para. 2.1.2. to detail function components and on-board information requirements,
• Amend Annex 21 para. 2.1.4. to require indication of interventions to driver or ADS,
• Amend Annex 21 para. 2.1.5. to specify failure detection and indication to driver or ADS,
• Amend Annex 21 para. 2.1.6. to require warning when trailer provides VDC Active information,
• Amend Annex 21 Appendix 2 para. 2.1. to specify validation test requirements and recorded motion variables,
• Amend Annex 22 para. 3.6. to require user handbook warnings about connector compatibility and marking specifications for automated connectors.

Proposal to enable application to ADS vehicles:

• Amend the introductory text,
• Delete para. 1.2.4.,
• Amend paras. 2.3., 2.3.2., 2.3.4., 2.5.1.1.3., 2.15., 2.16., 4.4.3., 5.1.1., 5.1.2., 5.1.5., 5.4., 5.6.1., 5.6.1.2.9., 5.7.1., 5.8., 5.8.3., 6.1.4., 6.2., Annex 1 para. 5.6., Annex 4 para. 2.3.1., Annex 7 paras. 2.1.2. and 3.5.,
• Insert new paras. 2.5.1.1.4., 3.2.4., 5.1.1.1.–5.1.1.3., 5.5.3., 5.8.4.–5.8.6.3., 6.2.6.–6.2.9., 12.4.–12.4.7., Annex 1 paras. 5.6.1.–5.6.3., and Annex 3 para. 1.4.,
• Renumber former paras. 12.4. and 12.5.1. as 12.5. and 12.5.1.,
• From entry into force, no refusal of approvals under amended Regulation,
• From 1 September 2027, no obligation to accept prior series approvals first issued after that date,
• Until 1 September 2029, continued acceptance of prior series approvals first issued before that date,
• From 1 September 2029, no obligation to accept prior series approvals,
• Until 1 September 2030, type approvals may be granted for Automated Lane Keeping System vehicles not complying with para. 5.8.

Proposal to amend UN R17, including revised definitions of head restraint, corrections to paragraph references, replacement of terminology such as “absorption” with “dissipation” and “reference line” with “longitudinal vertical plane passing through the R-point,” revised test procedures in multiple annexes, and modifications to measurement requirements for head restraint displacement and strength testing. The text was adopted by GRSP at its seventy-eighth session based on ECE/TRANS/WP.29/GRSP/78, Annex IV.A. Amendments

Proposal to amend UN R17 Supplement 1 to the 12 series of amendments. The Regulation is amended to account for vehicles of category X. Vehicles of category Y are not in the scope of this Regulation. The Regulation is extended to vehicles without driver and manual driving controls. Multiple amendments are made to definitions, test procedures, and technical requirements for seats, anchorages, and head restraints, including changes to measurement planes, test parameters, and displacement specifications across various annexes and paragraphs.

Proposal to correct inconsistencies in isolation resistance monitoring system requirements for vehicles of category O₃ and O₄ trailers to provide optical and/or audible warnings via CAN-Bus signal transmission. High voltage REESS isolation resistance requirement set at minimum 100 Ω/Volt or protection degree IPXXB fulfillment. Requirements do not apply to REESS solely installed on vehicles of category O or batteries used for recuperation.

Proposal to account for vehicles of categories X and Y, extend application to vehicles without driver and without manual driving controls, and address inconsistencies related to REESS provisions. The amendment introduces ADS feature types 1 and 2, modifies warning transmission requirements for ADSF-2, adjusts isolation resistance specifications, and exempts certain REESS requirements for category O and Y vehicles. Changes include updates to Annex 8 stopping conditions and Annex 9E terminology.

Proposal to replace “675 Nm ± 25 Nm” with “a minimum of 650 Nm but no more than 850 Nm” in Annex 4, paragraph 3.5., and in Annex 6, paragraph 2.4.1.

Proposal to modify requirements for headform acceleration derivation, windscreen testing, and approval marks. The document proposes notification procedures for Contracting Parties to share test results via the DETA database, deletes paragraphs 11.1 to 11.4, extends transition periods for atypical windscreen fracture behaviour testing until 1 September 2033 and WAD 2,100 boundary provisions until 1 September 2028, and adjusts bonnet top impact torque specifications from 675 Nm ±25 Nm to between 650 Nm and 850 Nm.

Proposal to extend application of UN R127 to vehicles of category X and those without drivers or manual driving controls, modify scope provisions, update headform acceleration criteria in paragraph 2.48, add new approval mark provisions distinguishing WAD 2,100 versus WAD 2,500 boundaries, require mandatory notification and uploading of test results to the DETA database, and set transitional provisions with dates through 2033 for type approvals and acceptance of previous amendments.

Proposal based on GRSP/2025/31 to amend para. 7.1.3.6. to require relevant intermediate dummies testing when Enhanced Child Restraint Systems require substantial modification for different sizes or when size range covers more than 3 size ranges and to delete paragraph 5.5. and renumber paragraphs 5.6. to 5.8. as 5.5. to 5.7.

Proposal to modify para. 6.2.1.1. regarding insert layers for small babies with stature below 50 cm, amend Annex 18, table 1 with updated shoulder height dimensions for statures 40 cm to 70 cm, update approval markings in Annex 2, and introduce transitional provisions with Contracting Parties no longer obliged to accept preceding series approvals from 1 September 2028.

Proposal to amend Annex 3, table 3, column “Number of cycles,” first row, is amended to read “60 per cent of initial cycle life (11 000 cycles).” and Annex 3, table 4, column “Number of cycles,” first and second rows, is amended to read “20 per cent of initial cycle life (11 000 cycles).”

Proposal to extend UN R134 to vehicles of category X (excluding vehicles of category Y), add provisions for Periodic Technical Inspections, modify hydrogen concentration warning requirements for ADS features of type 2 to transmit logic signals to the ADS, and adjust test cycle specifications in Annex 3.

Proposal to clarify that Child Restraint Systems approved according to UN R129 or R44 may be used in vehicles of categories M₂ and M₃ with a 3-point belt and/or ISOFIX attachments without further requirements. As a result, Part I of UN R170 covers Built-in Child Restraint Systems for securing children from 40 – 150 cm in forward facing and rearward facing vehicle seats and Part II addresses Child Restraint Systems approved according to UN R129 or R44 which may be installed in a bus seat with a 2-point belt.

Proposal to extend the scope to vehicles of category X (application to vehicles without driver and manual driving controls), to define door closure warning systems, address ADS features of type 1 and type 2, add requirements for door locking devices on vehicles equipped with ADSF-2, and modify references to driver-side impacts by impacts on one side of the vehicle.

Proposal to extend the scope to include vehicles of category X, replace “driver” by “occupant”, and separate the scope into vehicles with regard to protection of occupants against the steering mechanism and electrical shock in a frontal collision and steering controls with regard to protection of occupants in the event of impact.

Proposal to enable application to vehicles of category X. For vehicles equipped with an Automated Driving System other than vehicles of category X, in manual driving mode no special provisions apply. In a mode where an ADS feature is active, the relevant requirements for ADS vehicles apply.

Proposal to enable application to vehicles of category X (vehicles of category Y are not in scope). For vehicles of category X, the R point of the most forward passenger seat shall be taken instead of the R-point of the driver’s seat. Amendments address steering control contact requirements and modify occupant references.

Proposal to enable application to vehicles of category X, including prohibition of one-touch closing when an ADSF-2 is active, requirement for auto-reversing devices for power operated windows that can be operated by an ADSF-2, and user manual instructions for power-operated systems including warnings regarding improper use and driver and ADS responsibilities.

Proposal to enable application to vehicles of category X (vehicles of category Y are not in scope) with amendments addressing steering wheel hub provisions, cab positioning, and seating requirements for vehicles of category X. Cabs for vehicles of category X mounted in other positions than vehicle front shall not be taken into account for frontal collision simulation.

Proposal to enable application to vehicles of category X, including attention to ADAS/ADS sensors and providing specifications for test procedures and dummy positioning requirements for vehicles of category X in frontal collision protection testing.

Proposal to enable application to vehicles of category X, including clarifications to test procedures for asymmetric side structures and specifications for category X vehicles. In manual driving mode no special provisions or exemptions apply; in a mode where an ADS feature is active, the relevant ADS requirements apply. The regulation does not apply to vehicles of category Y.

Proposal to enable application to vehicles of category X with a gross vehicle mass of up to 3,500 kg. The most forward passenger seat R-point shall be taken instead of the driver’s seat R-point for vehicles of category X. Amendments clarify provisions related to sensors, testing procedures, and applicability to vehicles without drivers.

Proposal to enable application to vehicles of category X. Amendments specify dummy placement and positioning requirements for vehicles of category X, including provisions for both right and left hand traffic configurations. Vehicles of category Y are excluded from the scope.

Proposal to enable application to vehicles of category X (vehicles of category Y are excluded from the scope). For vehicles of category X, the R point of the most forward passenger seat shall be taken instead of the R-point of the driver’s seat. The proposal amends the provision on “anti-rotation device” to read, “An anti-rotation device for an ISOFIX semi-universal child restraint system consists of either a top tether, the vehicle dashboard, a support leg or any other means intended to limit the rotation of the restraint during a frontal impact”.

Proposal to enable application to vehicles of category X. In the absence of a driver or manual driving controls, provisions related to them shall not be taken into account if not already covered by this amendment. Vehicles of category Y are not in the scope of this Regulation. In manual driving mode, no special provisions or exemptions apply to vehicles equipped with an Automated Driving System other than vehicles of category X.

Proposal to enable application to vehicles of category X. For vehicles of category X, the R point of the most forward passenger seat shall be taken instead of the R-point of the driver’s seat. A seating position with steering control placed in front may be designated as suitable for Child Restraint System installation if requirements for a passenger seating position are fulfilled. The Regulation does not apply to vehicles of category Y.

Proposal to clarify exemptions for folding seats, delete a condition on neutral transmission position for first-level warnings, harmonize the “vehicle master control switch” definition with UN R159, ensure drivers receive initial warnings when entering vehicles with remotely activated switches, ensure clear voice communication during emergency calls, and enable application of UN R174 to vehicles of category X, including requirements for safety-belt reminders in first-row seats of category X vehicles and permission for ADS management of safety-belt reminders if equivalent safety is provided.

Proposal to modify paragraph 5.2.1.31 to clarify that when a vehicle is equipped with means to indicate emergency braking, activation and deactivation of the emergency braking signal shall only be generated by application of the service braking system regardless of its means of activation under the specified conditions.

Proposal to amend paragraph 5.2.1.31. regarding activation and de-activation of the emergency braking signal. When a vehicle is equipped with the means to indicate emergency braking, activation and de-activation of the emergency braking signal shall only be generated by the application of the service braking system regardless of its means of activation when the specified conditions are fulfilled.

Proposal to amend paragraph 5.2.1.31. to specify that when a vehicle is equipped with the means to indicate emergency braking, activation and deactivation of the emergency braking signal shall only be generated by the application of the service braking system regardless of its means of activation when the specified conditions are fulfilled.

Proposal to amend paragraph 5.6.1.2.9. of UN R79 to require that for RCP systems based on detection of driver position and movement, the deactivation referred to in paragraph 5.6.1.1.3. shall be through a simple and obvious action that will be recognised by the system.

Proposal to amend paragraph 4.4.3. to add a letter “X” preceding the approval number when ACSF of Category A, B1 or C are exempted from technical requirements or when the steering system exhibits ACSF of Category B2, D or E functionality, to require vehicles equipped with ACSF of Category A to fulfil requirements unless equipped with a DCAS complying with UN Regulation No. 171, and to require deactivation of RCP systems based on driver position detection through a simple and obvious action.

Proposal to amend paragraph 4.4.3. to add letter “X” preceding the approval number when ACSF of Category A, B1 or C have been exempted from technical requirements or when the steering system exhibits functionality defined as ACSF of Category B2, D or E; amend paragraph 5.6.1. to add provisions for vehicles equipped with ACSF of Category A unless equipped with a DCAS complying with UN R171; and amend paragraph 5.6.1.2.9. regarding deactivation of RCP systems based on detection of driver position and movement through a simple and obvious action.

Proposal to introduce references to ADS acceleration demands, establish speed limitation requirements for vehicles of Categories X and Y, require ASLF and ASLD deactivation upon ADS feature activation, and specify testing procedures including dedicated activation methods for vehicles without manual driving controls.

Proposal to amend paragraph 1.1.1. to insert a new footnote 7 defining replacement brake lining assemblies; amend footnote 4 referencing the Consolidated Resolution on the Construction of Vehicles; and amend Annexes 3, 4, 7, 11, and 14 to establish special provisions for vehicles equipped with an Automated Driving System, including dedicated activation methods for braking tests, demonstration requirements for test activation method accuracy, recording of braking demand in test reports, and speed limitations at 90 per cent of v_max for vehicles of categories X and Y.

Proposal to insert a new paragraph at the end of the introduction, amend paragraph 1 to clarify that the Regulation does not apply to vehicles of Categories X and Y, amend footnotes 1, 2, and 3 to reference document ECE/TRANS/WP.29/78/Rev.8, and insert new paragraph 5.6. with provisions that the LDWS function shall be deactivated upon activation of an ADS feature and automatically reinstated upon deactivation of an ADS feature.

Proposal to clarify that the Regulation does not apply to vehicles of categories X and Y, add an alternative approval pathway for certain vehicles using UN R152 requirements, allow continued extension of approvals for 12 months, amend paragraph 10 of Annex 1, and revise Annex 2 (approval mark arrangements).

Proposal to insert new paragraph 1.2.3 relating to vehicles of categories X and Y, amend footnotes 1 and 3 to reference the Consolidated Resolution on the Construction of Vehicles (R.E.3.), document ECE/TRANS/WP.29/78/Rev.8, and insert new paragraph 5.7 stating that while an ADS feature is active, the BAS shall not influence the performance of the braking system.

Proposal to delete footnote in paragraph 1; add bicycle impact avoidance to scope; amend paragraphs 2.13 and 2.14 regarding road adhesion definitions and Peak Braking Coefficient measurements; amend paragraph 5.4.2.3 requiring two deliberate actions for AEBS deactivation via ESC; renumber footnotes 2 through 9; and insert new paragraphs 5.4.4.1 to 5.4.4.3 to establish special provisions for vehicles equipped with an ADS.

Proposal to insert a new paragraph 1.2. stating that this Regulation does not apply to vehicles equipped with an ALKS that has been approved as an ADS feature in accordance with the UN Regulation on the approval of vehicles equipped with an Automated Driving System (i.e., where the ALKS has already been approved under the ADS regulation).

Proposal to modify DCAS requirements:

• Address system-initiated manoeuvres in non-highway environments and during phases of withholding hands-on requests,
• Enhanced driver disengagement monitoring and warning strategies,
• Controllability requirements for complex operational scenarios,
• Speed limit assistance features,
• Safe headway assistance,
• System validation through multiple assessment pillars including physical tests and in-service monitoring,
• Comprehensive safety management system requirements for manufacturers,
• Monitoring of DCAS operation with mandatory reporting of safety-critical occurrences to approval authorities,
• Periodic reporting requirements with specific data collection metrics,
• Software identification and updating compliance with UN R156,
• Clarification that DCAS is only permitted to operate when a driver is in control,
• Clarification that vehicles of categories X and Y without driver control capability are not required to comply with the regulation.

Proposal to amend UN R28 to add definitions for “Front plane,” “Automated Driving System (ADS),” “Dynamic Driving Task (DDT),” “Bi-directional vehicle,” and “Forward direction” in new paragraphs 11.3–11.7; add new paragraph 14.1.3 requiring separate sound pressure measurement for each front plane of bi-directional vehicles; amend paragraph 14.3.3 to specify measurement at 7.00±0.10 m from the front plane; and amend footnote 1 to paragraph 1 to reference ECE/TRANS/WP.29/78/Rev.8.

Proposal to introduce new definitions for Automated Driving System (ADS), Dynamic Driving Task, bidirectional vehicles, Enhanced Exterior Sound (EES), and Vehicle Master Control Switch; amend specifications for test mass, sound levels, and measurement procedures for vehicles of categories M₁–M₃, N₁–N₃, and vehicles equipped with an ADS; add provisions for vehicles electrically propelled without internal combustion engines; establish ASEP control ranges and calculation methods; and insert Annex 10 with specific provisions for testing vehicles equipped with an ADS.

The proposal adds Annex 5 on special provisions for testing vehicles equipped with an Automated Driving System (ADS) and adds definitions for ADS, Dynamic Driving Task, Category X and Y vehicles, logical signal, and Vehicle Master Control Switch. Amendments modify run-flat warning system requirements, braking performance tests, and tyre detection procedures to accommodate ADS-equipped vehicles.

Proposal to amend paragraph 1 (Scope) to clarify that the Regulation applies to new pneumatic tyres designed primarily for vehicles of category L₁, and to specify that approvals shall not be granted to tyre types designed exclusively for off-road use marked “NHS”, for competitions, or for bicycle rims according to ISO 5775-2:2021.

Proposal to amend paragraph 1.1. to specify that UN R106 applies to new pneumatic tyres designed primarily for agricultural and forestry vehicles in categories T, R and S; amend paragraph 1.1. footnotes to include definitions; and amend paragraph 3.1.5.3. to address marking requirements for implement tyres for mixed applications of speed category symbol D or E where service descriptions for trailer and traction applications are equal.

Proposal to revise the definition of principal grooves in paragraph 2.14.1.; delete paragraph 2.48. and renumber subsequent paragraphs; amend paragraph 2.51. regarding material supplier definition; revise paragraph 3.2.6. on M+S inscription requirements; modify paragraph 4.1.5.3.2. to include a table of tyres classified for severe snow conditions; delete paragraphs 4.1.5.3.2.1., 4.1.5.3.2.2., and 4.1.5.3.2.3.; revise paragraphs 6.5.3., 6.5.8., 6.6., 6.7.4., and 7.1.5. regarding material supplier requirements and diameter calculations.

Proposal to modify paragraph 2.4. to define “Material supplier,” delete paragraph 2.59., and renumber paragraphs 2.60., 2.61. and 2.61.1. as 2.59., 2.60. and 2.60.1., amend paragraphs 3.2.8., 3.6., and 4.1.5.3.2. regarding M+S markings and tyre classifications, and delete paragraphs 4.1.5.3.2.1., 4.1.5.3.2.2. and 4.1.5.3.2.