Cookies help us deliver our services. By using our services, you agree to our use of cookies. Learn more

UN Regulation No. 25
Head Restraints

Uniform Provisions Concerning the Approval of Head Restraints (Headrests), Whether or Not Incorporated in Vehicle Seats

Download the Regulation

Revisions and Amendments
Series of Amendments and Supplements

Application of the Regulation

Contracting Parties applying UN R25

Related News and Information

21 Mar 2018 21 Mar 2018 | ACEA Position Paper: General Safety Regulation Revision ACEA and EU European Automobile Manufacturers' Association and European Union Global Technical Regulation No. 7: Head Restraints This regulation specifies requirements for head restraints to reduce the frequency and severity of injuries caused by rearward displacement of the head (i.e. whiplash from rear-end collisions). A second phase in the development of this rule is underway to address the following:
  1. new headrest height requirements;
  2. a dynamic test to mitigate both short and long term whiplash injuries;
  3. evaluation of dummy use and injury criteria vis-à-vis biofidelity and correspondence with real world accidents.
GRSP is expected to consider an informal proposal, addressing all issues, including a draft Addendum 1 to the M.R.1 at its December 2016 session. AC.3 agreed to extend the mandate of the IWG until March 2017. Head Restraints Head Restraints GTR No. 7 GTR No. 7, Uniform provisions concerning the approval of motor vehicles with regard to the Blind Spot Information System for the Detection of Bicycles Adopted during the March 2019 WP.29 session, this regulation aims to reduce collisions and fatalities involving cyclists and heavy vehicles in close-proximity traffic. Blind spot detection Blind-spot information systems (BSIS) UN Regulation No. 151 UN R151, Not applicable. This initiative concerns amendments to UNECE R13 and R13-H.

ESS would amend UNECE Regulations 13 and 13-H on heavy and light vehicle braking, respectively, to incorporate systems that automatically signal sudden hard braking of motor vehicles to following vehicles.

Of current concern is the risk of regenerative braking systems (as used in hybrids and electric vehicles) to interfere with and/or mimic the behavior of ESS systems.

Emergency Stop Signal Emergency Stop Signal WP.29 Regulatory Project Emergency Stop Signal, Uniform provisions concerning the approval of motor vehicles with regard to the Advanced Emergency Braking System (AEBS) for M1 and N1 vehicles Light Vehicle AEBS Automatic Emergency Braking for M1/N1 vehicles UN Regulation No. 152 UN R152, Technical discussion of lane-keeping assist systems towards ascertaining whether any regulatory amendments and/or guidelines should be established. LKAS Lane Keeping Assist Systems WP.29 Regulatory Project Lane Keeping Assist Systems, This program aims to develop test procedures and performance requirements for a new UN Regulation for close-proximity vision and obstacle detection systems in order to reduce the risk of collision with pedestrians and other vulnerable road users when a vehicle is moving in reverse. VRU Proximity Awareness Awareness of Vulnerable Road Users in Low-speed Maneuvers WP.29 Regulatory Project Awareness of Vulnerable Road Users in Low-speed Maneuvers, In 2018, EDR became a priority in the WP.29 programme of work in relation to automated vehicle work and proposals for a Data Storage System for Automated Driving (DSSAD). In 2015, the UK Department for Transport published a Regulatory Review around Driverless Cars. This looked at whether such vehicles could be tested in the UK and which areas of legislation would need to be changed prior to everyday use of driverless cars. The Review found that event data recorders would be an essential element for the widespread use of driverless cars, given the need for a definitive record of the actions the driver and/or vehicle may or may not have taken prior to a collision. Therefore, the UK raised this topic during the May 2015 GRSG session and asked that EDR be added to the agenda for the October 2015 GRSG session. EDR Event Data Recorders WP.29 Regulatory Project Event Data Recorders, Uniform Provisions Concerning the Approval of: I. Safety-belts, Restraint Systems, Child Restraint Systems and ISOFIX Child Restraint Systems for Occupants of Power-driven Vehicles II. Vehicles Equipped with Safety-belts, Safety-belt Reminders, Restraint Systems, Child Restraint Systems and ISOFIX Child Restraint Systems Safety belt systems Safety belts and related systems UN Regulation No. 16 UN R16, Uniform Provisions Concerning the Approval of Head Restraints (Headrests), Whether or Not Incorporated in Vehicle Seats Head Restraints Head Restraints UN Regulation No. 25 UN R25, Uniform Provisions Concerning the Approval of Goods Vehicles, Trailers and Semi-Trailers with regard to their Lateral Protection CV Lateral Protection Commercial Vehicle Lateral Protection UN Regulation No. 73 UN R73, Uniform Provisions Concerning the Approval of Vehicles with regard to Steering Equipment Steering Equipment Steering Equipment UN Regulation No. 79 UN R79, Uniform Provisions Concerning the Approval of Category M2 or M3 Vehicles with regard to their General Construction

UNECE R107 covers the approval of single-deck, double-deck, rigid or articulated vehicles, with the exception of certain special-use vehicles such as ambulances, school buses, prison buses, etc.

The regulation also lays out special requirements for other special-use buses and vans such as mobile libraries.

Coach and Bus Construction Construction of Coaches and Buses UN Regulation No. 107 UN R107, Uniform provisions concerning the approval of vehicles with regard to their Pole Side Impact performance (PSI) This regulation transposed Global Technical Regulation No. 14 into the type-approval system under the 1958 Agreement. Pole Side Impact Pole side-impact protection UN Regulation No. 135 UN R135, Uniform provisions concerning the approval of passenger cars in the event of a frontal collision with focus on the restraint system This regulation provides for a full-width rigid barrier frontal impact test to evaluate the performance of occupant restraint systems. Briefly, the test involves a 50 km/h impact of a vehicle equipped with a Hybrid III 50th percentile male driver and an HIII 5th percentile female front passenger. Aimed particularly at reducing injuries to the elderly, the test sets a 42 mm ThCC threshold that will be strengthened to 34 mm for the HIII 5F in 2020 (via the 01 series amendments). Frontal Impact ORS Restraint System in Frontal Impact UN Regulation No. 137 UN R137, and Uniform provisions concerning the approval of vehicles with regard to their tyre pressure monitoring systems Program to separate tyre-pressure monitoring systems provisions from UN Regulation No. 64 on spare tyres. The primary issue is to remove provisions from UN R64 that will not be included in the initial phase of the International Whole Vehicle Type Approval (IWVTA) system. Tire Pressure Monitoring Systems Tire Pressure Monitoring Systems UN Regulation No. 141 UN R141
25 Feb 2015 25 Feb 2015 | WP.29 publishes acronyms and symbols listings Global Technical Regulation No. 4: Test Procedure for Compression-ignition (C.I.) Engines and Positive-ignition (P.I.) Engines Fuelled with Natural Gas (NG) or Liquefied Petroleum Gas (LPG) with regard to the Emission of Pollutants The Informal Group on Heavy-Duty Hybrids expects to deliver its final draft amendment to GTR No.4 at the January 2014 session of GRPE. This amendment would extend GTR No. 4 to include test procedures to evaluate hybrid heavy-duty vehicles. WHDC Worldwide Heavy-Duty Vehicle Emissions Certification Procedure GTR No. 4 GTR No. 4, Consolidated Resolution on the Construction of Vehicles (R.E.3) RE3 is an overarching document to facilitate harmonization and support the development of specific UN Regulations by providing uniform terms, references, and other guidance for general use. RE3 provides the guiding principles for the various rule categories by subsystem. The Resolution, via Annex 7 (including Amendment 4), provides definitions of vehicle categories, including in some cases, particular classes of vehicles within the categories. Annex 4 includes recommendations on market fuel quality and Annex 5 contains design principles for control systems of Advanced Driver Assistance Systems (ADAS). Consolidated Resolution RE3 Consolidated Resolution on the Construction of Vehicles United Nations Agreement Consolidated Resolution on the Construction of Vehicles, Special Resolution No. 1 Concerning the Common Definitions of Vehicle Categories, Masses and Dimensions (S.R. 1) Special Resolution No. 1 contains the definitions of common terms used in global technical regulations (GTR), including of the vehicle categories used in specifying the scope of a regulation. SR 1: Vehicle Categories Special Resolution No. 1: Vehicle Categories, Masses and Dimensions United Nations Agreement Special Resolution No. 1: Vehicle Categories, Masses and Dimensions, Uniform Provisions Concerning the Approval of Category L2, L4 and L5 Vehicles with Regard to Noise Three-Wheeled Cycle Noise Three-Wheeled Cycle Noise UN Regulation No. 9 UN R9, Uniform provisions concerning the approval of vehicles with regard to electromagnetic compatibility Electromagnetic Compatibility Electromagnetic Compatibility UN Regulation No. 10 UN R10, Uniform Provisions Concerning the Approval of Vehicles with Regard to the Protection of the Driver Against the Steering Mechanism in the Event of Impact Steering Mechanism Steering Mechanism Impact Protection UN Regulation No. 12 UN R12, 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, 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, Uniform Provisions Concerning the Approval of Vehicles with regard to Safety-belt Anchorages, ISOFIX Anchorages Systems and ISOFIX Top Tether Anchorages Safety-Belt/ISOFIX Anchorages Safety-Belt and ISOFIX Anchorages UN Regulation No. 14 UN R14, Uniform Provisions Concerning the Approval of: I. Safety-belts, Restraint Systems, Child Restraint Systems and ISOFIX Child Restraint Systems for Occupants of Power-driven Vehicles II. Vehicles Equipped with Safety-belts, Safety-belt Reminders, Restraint Systems, Child Restraint Systems and ISOFIX Child Restraint Systems Safety belt systems Safety belts and related systems UN Regulation No. 16 UN R16, Uniform Provisions Concerning the Approval of Vehicles with regard to the Seats, their Anchorages and any Head Restraints This Regulation applies to:
  1. Vehicles of categories M1 and N with regard to the strength of seats and their anchorages and with regard to their head restraints;
  2. Vehicles of categories M2 and M3 with regard to seats not covered by Regulation No. 80, in respect of the strength of seats and their anchorages, and in respect of their head restraints;
  3. Vehicles of category M1 with regard to the design of the rear parts of seat backs and the design of devices intended to protect the occupants from the danger resulting from the displacement of luggage in a frontal impact.

It does not apply to vehicles with regard to side-facing or rearward-facing seats, or to any head restraint fitted to these seats.

Strength of Seats Strength of Seats, Anchorages, and Head Restraints UN Regulation No. 17 UN R17, Uniform Provisions Concerning the Approval of Protective Helmets and their Visors for Drivers and Passengers of Motor Cycles and Mopeds Helmets Helmets and Visors UN Regulation No. 22 UN R22, Uniform Provisions Concerning the Approval of Head Restraints (Headrests), Whether or Not Incorporated in Vehicle Seats Head Restraints Head Restraints UN Regulation No. 25 UN R25, Uniform Provisions Concerning the Approval of Pneumatic Tyres for Motor Vehicles and their Trailers This rule applies primarily, but not exclusively, to tires for use on passenger cars and their trailers. Pneumatic Tires Pneumatic Tires UN Regulation No. 30 UN R30, Uniform Provisions Concerning the Approval of Motor Cycles with regard to Noise The proposal for the 04 series of amendments, adopted at the June 2011 Forum session, will be posted as Revision 2 to the regulation pursuant to the completion of administrative formalities. Motorcycle Noise Motorcycle Noise UN Regulation No. 41 UN R41, Uniform Provisions Concerning the Approval of Restraining Devices for Child Occupants of Power-driven Vehicles ("Child Restraint System") Child Restraint Systems Child Restraint Systems UN Regulation No. 44 UN R44, Uniform provisions concerning the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines and positive ignition engines for use in vehicles Diesel/CNG/LNG Engine Emissions Diesel and CNG/LNG Engine Emissions UN Regulation No. 49 UN R49, Uniform Provisions Concerning the Approval of Motor Vehicles having at least Four Wheels with regard to their Noise Emissions Vehicle Noise Vehicle Noise Emissions UN Regulation No. 51 UN R51, Uniform Provisions Concerning the Approval of Pneumatic Tyres for Commercial Vehicles and their Trailers CV Tires Commercial Vehicle Tyres UN Regulation No. 54 UN R54, Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles Mechanical Couplings Mechanical Coupling Components UN Regulation No. 55 UN R55, Uniform Provisions Concerning the Approval of Two-wheeled Mopeds with regard to Noise Moped Noise Two-wheeled Moped Noise UN Regulation No. 63 UN R63, "Uniform provisions concerning the approval of vehicles with regard to their equipment which may include: a temporary- use spare unit, run-flat tyres. Spare Tires Temporary-use Tires UN Regulation No. 64 UN R64, Uniform Provisions Concerning the Approval of Pneumatic Tyres for Motor Cycles and Mopeds Motorcycle Tires Motorcycle and Moped Tires UN Regulation No. 75 UN R75, 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, Uniform Provisions Concerning the Approval of Vehicles with regard to Steering Equipment Steering Equipment Steering Equipment UN Regulation No. 79 UN R79, Uniform Provisions Concerning the Approval of Seats of Large Passenger Vehicles and of these Vehicles with regard to the Strength of the Seats and their Anchorages Coach Seat Strength Seat Strength and Seat Anchorages for Large Passenger Vehicles UN Regulation No. 80 UN R80, Uniform Provisions Concerning the Approval of Vehicles with regard to the Emission of Pollutants According to Engine Fuel Requirements Together with R49, Regulation 83 addresses vehicle emissions. R83 covers emissions from all light vehicles (M1/N1) regardless of engine type and from heavier vehicles only if equipped with a gasoline engine. Under certain circumstances, R83 or R49 can apply to light vehicle CNG/LPG engines as well as to medium passenger and commercial vehicles (M2/N2) equipped with diesel engines. R83 also contains provisions specific to hybrid variations of the vehicles under its purview. Motor Vehicle Emissions Motor Vehicle Emissions UN Regulation No. 83 UN R83, Uniform Provisions Concerning the Approval of: I. Vehicles with regard to Limitation of their Maximum Speed II. Vehicles with regard to the Installation of a Speed Limitation Device (SLD) of an Approved Type III. Speed Limitation Devices (SLD) Speed Limitation Devices Speed Limitation Devices UN Regulation No. 89 UN R89, Uniform Provisions Concerning the Approval of Vehicles with regard to the Protection of the Occupants in the Event of a Frontal Collision Frontal Collision Protection Occupant Protection in Frontal Collisions UN Regulation No. 94 UN R94, Uniform Provisions Concerning the Approval of Vehicles with regard to the Protection of the Occupants in the Event of a Lateral Collision This regulation applies to the lateral collision behavior of the structure of the passenger compartment of M1 and N1 categories of vehicles where the "R" point of the lowest seat is not more than 700 mm from ground level when the unladen vehicle plus 100 kg (i.e., the mass of a side impact dummy plus instrumentation) is at rest. Lateral Collision Protection Occupant Protection in Lateral Collisions UN Regulation No. 95 UN R95, Uniform provisions concerning the approval of vehicles with regard to specific requirements for the electric power train Electric Powertrain Vehicles Construction and Safety of Electric Powertrains UN Regulation No. 100 UN R100, Uniform Provisions Concerning the Approval of: I. A Close-Coupling Device (CCD) II. Vehicles with regard to the Fitting of an Approved Type of CCD Close-Coupling Devices Close-Coupling Devices UN Regulation No. 102 UN R102, Uniform Provisions Concerning the Approval of Vehicles Intended for the Carriage of Dangerous Goods with regard to their Specific Constructional Features ADR Vehicles Construction of Vehicles for the Carriage of Dangerous Goods UN Regulation No. 105 UN R105, Uniform Provisions Concerning the Approval of Pneumatic Tyres for Agricultural Vehicles and their Trailers Agricultural Tires Tires for Agricultural Vehicles UN Regulation No. 106 UN R106, Uniform Provisions Concerning the Approval for the Production of Retreaded Pneumatic Tyres for Motor Vehicles and their Trailers Retreaded Tires Retreaded Tires for Motor Vehicles UN Regulation No. 108 UN R108, Uniform Provisions Concerning the Approval for the Production of Retreaded Pneumatic Tyres for Commercial Vehicles and their Trailers CV Retreaded Tires Retreaded Tires for Commercial Vehicles UN Regulation No. 109 UN R109, Uniform Provisions Concerning the Approval of Tank Vehicles of Categories N and O with regard to Rollover Stability Tank Vehicle Stability Tank Vehicle Rollover Stability UN Regulation No. 111 UN R111, Uniform provisions concerning the approval of tyres with regard to rolling sound emissions and/or to adhesion on wet surfaces and/or to rolling resistance Tire Noise, Wet Adhesion, and Rolling Resistance Tire Rolling Sound Emissions, Adhesion on Wet Surfaces, and Rolling Resistance UN Regulation No. 117 UN R117, Uniform Provisions Concerning the Approval of Wheels for Passenger Cars and their Trailers Passenger Car/Trailer Wheels Passenger Car and Trailer Wheels UN Regulation No. 124 UN R124, Uniform provisions concerning the approval of motor vehicles with regard to their pedestrian safety performance Pedestrian Safety Pedestrian Safety UN Regulation No. 127 UN R127, and 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
Access all 2 headlines (This may take a minute.)

Development of the Regulation

No changes to this regulation are pending.

Latest Documents

23 Sep 2015
Proposal for Supplement 2 to the 04 series of amendments to Regulation No. 25 | GRSP/2015/22
27 Aug 2014
Proposal for Supplement 1 to the 04 series of amendments to Regulation No. 25 | WP.29/2014/72
19 May 2014
Proposal to correct the draft Supplement 1 to the 04 series of amendments to UN Regulation No. 25 | GRSP-55-11
See all 8 related documents

Latest Meeting Discussions

Working Party on Passive Safety | Session 61 | 8-12 May 2017
Working Party on Passive Safety | Session 60 | 13-16 Dec 2016
Working Party on Passive Safety | Session 59 | 9-13 May 2016
See more related meetings