UAE Energy / Oil & Gas LawCabinet Resolution No. (42) of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System

Article (1) Definitions For the purposes of implementing the provisions of this Resolution, the following terms and expressions shall have the meanings assigned to each of them, unless the context requires otherwise: State : United Arab Emirates.

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 2 Ministry : Ministry of Industry and Advanced Technology. Minister : Minister of Industry and Advanced Technology. Competent Authority : The federal and local government authority in the State responsible for implementing any of the provisions of this Resolution. Product : Any hydrogen-fueled vehicle with a gross weight not exceeding 4536 kg, including a light vehicle and a light bus with a speed exceeding 25 km/h which use hydrogen as an alternative fuel to generate motive power. Standard Specification : A document that defines the attributes of a commodity, material, product, service, or everything that is subject to measurement, its description, characteristics, quality level, dimensions, standards or safety and security requirements therein. It also includes terminologies, symbols, testing methods, sampling, packaging, labels and marks. Approved Standard Specifications : The standard specifications approved by the Ministry, referred to as UAE Standard Specifications and denoted by the abbreviation (UAE.S). Conformity Certificate : A Certificate issued by the Ministry, which confirms that the product or any batch thereof complies with the requirements of the Approved Standard Specifications. Gulf Conformity Certificate : A Certificate issued by an accepted body after conducting type examination, confirming that the technical design of the model subject to examination complies with the requirements of Gulf technical regulations. Conformity Assessment : Any Activity used directly or indirectly to verify that the product or service complies with the relevant technical requirements.

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 3 Conformity Assessment Body : A Body registered, accredited or accepted by the Ministry to carry out Conformity Assessment Procedures in accordance with the legislation in force in this regard, including testing and calibration laboratories, inspection bodies, competence testing bodies, and certification bodies for systems, individuals or products. Supply Chain : All stages through which a product passes, from the primary production until it reaches the consumer, including the stages of import and manufacture, product preparation, processing, packaging, handling, and placing on the market. Supplier : The manufacturer, packer, processor, importer, or warehouse operator of the product, any primary distributor or sub- distributor or any person whose activity has an impact on the product characteristics, or any commercial or legal representative who is responsible for importing the product.

Article (4) Obligations of the Supplier The Supplier, at any stage of the supply chain, shall comply with the following: 1. Not to enter any product into the State subject to the provisions of this Resolution before obtaining the Conformity Certificate or the Gulf Conformity Certificate. 2. Cooperate with the Ministry and the Competent Authority and provide it with all the documents and data it requests, including the product inspection reports shown in accordance with the requirements contained in Annex No. (3) attached hereto. 3. Ensure that the Product complies with the requirements specified herein and the instructions for use specified for it throughout the period of the product use. 4. Fulfill the Product requirements, including product performance requirements, required data labels, safety equipment, and product storage requirements in accordance with Annex No. (3) attached hereto. 5. Provide the requirements, data and procedures for dealing with incidents affecting the Product in accordance with Annex No. (3) attached hereto. 6. Ensure the provision of the supporting infrastructure of the product, including technical workshops, qualified personnel, devices and equipment used in maintenance in accordance with Annex No. (3) attached hereto. 7. Providing the technical requirements for the devices and equipment used in hydrogen refueling stations, according to the specifications contained in Annex (2) attached hereto. 8. Providing the technical requirements for maintenance, replacement and re-installation of the hydrogen system components in the Product, including safety requirements and technical personnel qualification to handle these products. 9. The technical instructions and procedures in force in the State shall be followed when storing, transporting and handling or when disposing of consumed or damaged waste to ensure the protection of the environment and the preservation of public safety.

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Article (6) Conformity Assessment Procedures 1. The supplier shall apply to obtain the Conformity Certificate for the product, according to the following requirements: a. Submit an application to register the product with the Ministry. b. Provide a copy of a valid industrial or commercial license in the State. c. Sign a Declaration of Conformity according to the form approved by the Ministry. d. Submit all documents and data related to the Product's compliance with the technical requirements set out in Annex No. (3) attached hereto. e. Determine the nominal characteristics of the Product, which shall be recorded on the label. 2. The Conformity Certificate issued in accordance with the provisions of this Resolution shall be valid for one year from the date of its issuance, and shall be renewed annually if it complies with the conditions mentioned in the provisions of this Resolution. 3. The manufacturer/supplier shall bear the costs of any Product inspection or testing required by the Ministry during the product conformity period. 4. In the event that the Product obtains the Gulf Conformity Certificate, this does not require obtaining a Conformity Certificate from the Ministry. 5. The Ministry shall have the right to conduct factory visits, whenever necessary, to review

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 6 the manufacturing processes and witness the required tests in accordance with the Standard Specifications contained in Annex No. (1) attached hereto.

Article (7) Monitoring and Market Surveillance 1. When the Product is placed on the market, it shall be subject to surveillance. The Ministry or the Competent Authority, as the case may be, shall undertake the procedures necessary to monitor the Product to ensure its continued conformity with the Conformity Certificate at all stages of the supply chain, and for that purpose it may undertake any of the following procedures: a. Ensuring that all outlets where the product is placed in the State comply with the prohibition of importing or placing it on the local markets, except after obtaining the Conformity Certificate; b. Withdraw samples of the Product from the market or from the suppliers’ warehouses, in order to conduct the necessary tests and ensure their conformity with this Resolution requirement. c. Undertaking the appropriate procedures against non-compliant Products, including suspending or cancelling the Conformity Certificate of such Products and withdrawing and recalling non-conforming Products from the market; and d. Requiring the supplier responsible for placing the non‑compliant Product on the market, to recall and withdraw it from the local markets, and regularize its status if possible, or requiring them to return it to the country of origin or to destroy it in accordance with the legislation in force in this regard, within the period specified by the Ministry or the Competent Authority, as the case may be. e. Follow-up on implementation of the procedures referred to in this article. 2. The supplier from whom the Product sample is taken shall be deemed responsible for the Product non-conformity with the requirements of this Resolution, unless proven otherwise, during the period specified by the Ministry or the Competent Authority, as the case may be.

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Article (8) Violations and Penalties 1. Without prejudice to any penalty or procedure stipulated by any Legislation in force in the State, in the event that a violation of any of the provisions of this Resolution is committed, the Ministry or the Competent Authority, as the case may be, may impose one or more of the following administrative penalties: a. Coordinating with the Licensing Authority to revoke the commercial license of the Violating supplier; and b. Cancel the Conformity Certificate granted to the non‑compliant product. c. Charging the Violator with the expenses and costs of removing and remedying the damages resulting from the violation, remedy in the event of failure to carry out the removal or remedy process. 2. If the Ministry or the Competent Authority, as the case may be, is unable to specify who is responsible for the Product's non-conformity with the requirements of this Resolution, then the person with whom the violation was detected shall be deemed responsible for the non-conformity unless otherwise proven.

Article (9) Grievance Procedures 1. Grievances may be filed against the decisions issued pursuant to the provisions of Article (8) of this Resolution, provided that the following are adhered to: a. The grievance shall be submitted to the Minister or the Head of the Competent Authority or their delegates in accordance with the procedures specified by the Ministry or the Competent Authority, as the case may be, within a period not exceeding (14) working days from the date on which the Violator is notified of the decision against which the grievance is submitted; and b. The necessary documents explaining the reason for the grievance shall be attached. 2. The Minister, the Head of the Competent Authority, or their delegates shall issue the decision they deem appropriate regarding the grievance submitted in accordance with the provisions of this article within a period not exceeding (25) working days from the date of

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 8 its submission, and the decision issued in this regard shall be final, and the grievance shall be deemed rejected if no procedure is undertaken within the period specified in this Clause.

Article (10) General Provisions 1. The Ministry shall be responsible for implementing the provisions of this Resolution and for that purpose, it may undertake the procedures it deems appropriate, and it may delegate some of its powers to the acceptable Conformity Assessment bodies. 2. The Ministry shall be responsible for receiving and reviewing product registration applications and granting Conformity Certificates in accordance with the provisions of this Resolution. The Ministry has the right to delegate any of the competent authorities or appoint an acceptable Conformity Assessment body to assess Product conformity, in accordance with the Cabinet Resolution regarding the UAE system for the control of Conformity Assessment Bodies. 3. The supplier and the relevant parties shall fully cooperate with the Ministry and the Competent Authorities and shall provide the information necessary to implement the provisions of this Resolution. 4. The Standard Specifications contained in Annex No. (1) and Annex No. (2) attached hereto shall be mandatory Standard Specifications for the purposes of its implementation, and no Product may be placed unless it conforms to or complies with the provisions hereof. 5. The Minister may amend any of the Standard Specifications or the requirements contained in the Annexes attached to this Resolution, or adopt any other Standard Specification required for the implementation of this Resolution, in accordance with the Legislation in force in this regard.

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Article (13) Publication and Entry into Force This Resolution shall be published in the Official Gazette and shall enter into force from the day following the date of its publication. Mohamed bin Rashid Al Maktoum Prime Minister Issued by Us: Dated: 9 Ramadan 1442 A.H. Corresponding to: 21 April 2021 A.D.

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 10 Annex (1) – Regarding the Standard Specifications for Vehicles Attached to Cabinet Resolution No. (42) of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles No. Standard No. Standard Title 1 UAE.S GSO 36 Motor Vehicle – Methods of test for Impact Strength – Part 1: Frontal Impact 2 UAE.S GSO 37 Motor Vehicle – Methods of test for Impact Strength – Part 2: Rear Impact 3 UAE.S GSO 38 Motor Vehicle – Methods of test for Impact Strength – Part 3A: Side Impact 4 UAE.S GSO 39 Motor Vehicle – Methods of test for Impact Strength – Part 4: Roof Strength 5 UAE.S GSO 40 Motor Vehicle –Impact Strength 6 UAE.S GSO 41 Motor Vehicle – Front and Rear Exterior Protection Devices for Passenger Cars (Bumpers etc.) and its Methods of Test 7 UAE.S GSO 42 Motor Vehicle: General Requirements 8 UAE.S GSO 48 Motor Vehicle: Conformity Certificates 9 UAE.S GSO 51 Passenger Car Tyres – Part 1: Nomenclature, Designation, Dimensions, Load Capacities and Inflation Pressures 10 UAE.S GSO 52 Passenger Car Tyres – Part 2: General Requirements 11 UAE.S GSO 53 Passenger Car Tyres – Part 3: Methods of Test 12 UAE.S GSO 96 Motor Vehicles – Methods of Testing of Safety Belt 13 UAE.S GSO 97 Motor Vehicles - Safety Belts 14 UAE.S GSO 98 Motor Vehicles – Flammability of Interior Materials and Testing Methods 15 UAE.S GSO 99 Road Vehicles – Sound Signalling Devices – Technical Specifications 16 UAE.S GSO 279** Car Upholstery – Testing Methods of Fabric for Car Seats 17 UAE.S GSO 280** Car Upholstery – Fabric for Seats

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 11 18 UAE.S GSO 289** Road Vehicles – Retro Reflective Number Plates and its Methods Test 19 UAE.S GSO 290 Instruction Manual for Appliances Instruments and Equipment 20 UAE.S GSO 419 Motor Vehicles – Methods of Testing for Door Locks and Door Hinges 21 UAE.S GSO 420 Motor Vehicles – Door Locks and Door Hinges 22 UAE.S GSO 421 Motor Vehicles – Methods of Testing of Rear-view Mirrors 23 UAE.S GSO 422 Motor Vehicles – Rear-view Mirrors 24 UAE.S GSO 645 Multi-Purpose Vehicles, Trucks, Buses and Trailers Tyres – Part 1: Nomenclature, Designation, Dimensions, Load Capacities and Inflation Pressures 25 UAE.S GSO 646 Multi-Purpose Vehicles, Trucks, Buses and Trailers Tyres: Part 2: Method of Test 26 UAE.S GSO 647 Multi-Purpose Vehicles, Trucks, Buses and Trailers Tyres: Part 3: General Requirements 27 UAE.S GSO 971** Motor Vehicles – Periodic Technical Inspection Manual 28 UAE.S GSO 1052* Motor Vehicles Tyres – Temporary Use Spare wheel/Tyres and Their Methods of test 29 UAE.S GSO 1053 Motor Vehicles – Protection Against Theft 30 UAE.S GSO 1503 Motor Vehicles – Head Lamps Safety Requirements. 31 UAE.S GSO 1598 Motor Vehicles – Head Restraints and Their Methods of test 32 UAE.S GSO 1625* Motor Vehicles – Speed Limiters- Part 2: Technical Requirements 33 UAE.S GSO 1626* Motor Vehicles – Speed Limiters- Part 3: Methods of test 34 UAE.S GSO 1677 Motor Vehicles – Laminated Safety Glass 35 UAE.S GSO 1707 Motor Vehicles – Methods of test for Impact Strength- Part 3B: Moving Barrier Side Impact (In accordance to Us standards) 36 UAE.S GSO 1708 Motor Vehicles- Methods of test for Impact Strength- Part 3C: Moving Barrier Side Impact (In accordance to European standards) 37 UAE.S GSO 1709* Motor Vehicles – Child Restraint Systems 38 UAE.S GSO 1710* Motor Vehicles – Methods of Testing of Child Restraint

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 12 39 UAE.S GSO 1711* Motor vehicles – Speed Limiters- Part 1: General requirements, Equipment Inspection, Certification and type approval 40 UAE.S GSO 1780 Motor Vehicles – Vehicle Identification Number (VIN) – Requirements 41 UAE.S GSO 1781 Motor Vehicles – World Manufacturer Identifier 42 UAE.S GSO 1782 Motor Vehicles – Vehicle Identification Number (VIN) – Location and attachment 43 UAE.S GSO 1783 Passenger Car Tyres – Tread wear, Traction and Temperature- Resistance Grading 44 UAE.S GSO 1784 Passenger Car Tyres – Method of Testing of tyre Temperature Resistance Grading 45 UAE.S GSO ISO 3537 Motor Vehicles- Safety Glazing Materials- Mechanical Tests 46 UAE.S GSO ISO 3538 Road Vehicles- Safety Glasses- Test Methods for Optical Properties 47 UAE.S GSO ISO 6311** Motor Vehicles- Methods of Testing Brake Linings- Part 1: Internal Shear Strength of Lining Material. 48 GSO-ECE-13H Motor Vehicles: Braking System of Passenger Cars and Multi- Purpose Vehicles 49 GSO-ECE-13H-1 Motor Vehicles: Methods of Test for Braking System- Part 1: Braking Performance 50 GSO-ECE-13H-2 Motor Vehicles: Methods of Test for Braking System- Part 2: Determination of Capacity of Energy Storage Devices 51 GSO-ECE-13H-3 Motor Vehicles: Methods of Test for Braking System- Part 3: Determination of Distribution of Braking among the Axles of Vehicles 52 GSO-ECE-13H-4 Motor Vehicles: Methods of Test for Braking System- Part 4: Determination of Function of Anti-Lock Systems 53 GSO-ECE-13H-5 Motor Vehicles: Methods of Test for Braking System- Part 5: Determination of Performance of Brake Lining Using Inertia

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 13 Dynamometer 54 GSO-ECE-13H-6 Motor Vehicles: Methods of Test for Braking System- Part 6: Determination of Coefficient of Adhesion * ** Applicable for certification if provided or the vehicle is designed for. Not applicable for Certification.

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 14 Annex (2) – Regarding the Standard Specifications for Hydrogen Vehicles Attached to Cabinet Resolution No. (42) of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles Standard No. Standards Title Vehicle Fuel System UAE.S ISO 17268 Compressed hydrogen surface vehicle refuelling connection devices UAE.S ISO 23273-1 Fuel cell road vehicles- Safety specification- Part 1: Vehicles functional safety; UAE.S ISO 23273-2 Fuel cell road vehicles- Safety specifications- Part 2: Protection against hydrogen hazards for vehicles fuelled with compressed hydrogen UAE.S ISO 14687 Hydrogen fuel quality- Product specification Storage System EU Regulation 406/2010 Implementing of type-approval of hydrogen-powered motor vehicles UAE.S ISO 13985:2006 Liquid Hydrogen – Land Vehicle Fuel Tanks UAE.S ISO 15869:2009 Gaseous Hydrogen and Hydrogen Blends- Land Vehicle Fuel Tanks (Technical Specification) Electric Safety Regulations UAE.S ECE R 100 The approval of vehicles with regard to specific requirements for the electric power train UAE.S FMVSS 305 Electric-Powered Vehicles: Electrolyte Spillage and Electrical Shock Protection UAE.S ISO 23273-3 Fuel cell road vehicles- Safety specification- Part 3: Protection of persons against electric shock; UAE.S ISO 19880-3:2018 Gaseous hydrogen- Fuelling stations- Part 3: Valves

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 15 UAE.S ISO 19880-1:2020 Gaseous hydrogen- Fuelling stations- Part 1: General requirements Note: The FMVSS Specifications are accepted as an equivalent Specifications to the approved Specification.

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 16 Annex (3) – Regarding the UAE Technical Requirements for Hydrogen Vehicles Attached to Cabinet Resolution No. (42) of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles (Technical Regulation on Hydrogen-Fueled Vehicles) 1. Scope This regulation applies to all hydrogen-fueled vehicles with a gross vehicle mass (GVM) of 4.500 kilograms or less and a speed not less than 25 Km/h. 2. Definitions For the purpose of this regulation, the following definitions shall apply: 2.1 " Active driving possible mode" is the vehicle mode when application of pressure to the accelerator pedal (or activation of an equivalent control) or release of the brake system causes the electric power train to move the vehicle. 3.2 " Automatic disconnect" is a device that, when triggered, conductively separates the electrical energy sources from the rest of the high voltage circuit of the electrical power train. 3.3 “ Burst-dis" is the non-reclosing operating part of a pressure relief device which, when installed in the device, is designed to burst at a predetermined pressure to permit the discharge of compressed hydrogen. 3.4 " Check valve" is a non-return valve that prevents reverse flow in the vehicle fuel line. 3.5 " Concentration of hydrogen" is the percentage of the hydrogen moles (or molecules) within the mixture of hydrogen and air (Equivalent to the partial volume of hydrogen gas). 3.6 " Container" (for hydrogen storage) is the component within the hydrogen storage system that stores the primary volume of hydrogen fuel. 3.7 " Conductive connection" is the connection using contractors to an external power supply when the rechargeable energy system (REESS) is charged. 3.8 " Coupling system" for charging the rechargeable energy storage system (REESS) is the electrical circuit used for charging the REESS from an external electric power supply

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 17 including the vehicle inlet. 3.9 " Date of removal from service" is the date (month and year) specified for removal from service. 3.10 " Date of manufacture" (of a compressed hydrogen container) is the date (month and year) of the proof pressure test carried out during manufacture. 3.11 " Direct contact" indicates the contact of persons with high voltage live parts. 3.12 " Enclosed or semi-enclosed spaces" indicates the special volumes within the vehicle (or the vehicle outline across openings), that are external to the hydrogen system (storage system, fuel cell system and Fuel flow management system) and its housing (if any) where hydrogen may accumulate (and thereby pose a hazard), as it may occur in the passenger compartment, luggage compartment, cargo compartment and space under the hood. 3.13 " Enclosure" is the part enclosing the internal units and providing protection against any direct contact. 3.14 " Electric energy conversion system" is a system (e.g. fuel cell) that generates and provides electrical power for vehicle propulsion. 3.15 " Electric power train" is the electrical circuit which may include the traction motor(s), and may also include the REESS, the electrical power conversion system, the electronic converters, the traction motors, the associated wiring harness and connectors and the coupling system for charging the REESS. 3.16 " Electrical chassis" is a set of conductive parts electrically linked together, whose electrical potential is taken as reference. 3.17 " Electrical circuit" is an assembly of connected high voltage live parts that is designed to be electrically energized in normal operation. 3.18 " Electrical isolation" is the electrical resistance between a vehicle high voltage bus source and any vehicle conductive structure. 3.19 " Electrical protection barrier" is the part providing protection against direct contact with live parts from any direction of access. 3.20 " Electronic converter" is a device capable of controlling and/or converting electric power for propulsion. 3.21 " Exhaust point of discharge" is the geometric centre of the area where fuel cell purged

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 18 gas is discharged from the vehicle. 3.22 " Exposed conductive part" is the conductive part that can be touched under the provisions of the IPXXB protection degree and becomes electrically energized under isolation failure conditions. This includes parts under a cover that can be removed without using tools. 3.23 " External electric power supply" is an alternating current (AC) or direct current (DC) that provides electric power outside of the vehicle. 3.24 " Fuel cell system" is a system containing the fuel cell stack(s), air processing system, fuel flow control system, exhaust system, thermal management system and water management system. 3.25 " Fuelling receptacle" is the equipment to which a fuelling station nozzle attaches to the vehicle and through which fuel is transferred to the vehicle. The fuelling receptacle is used as an alternative to a fuelling port. 3.26 " High voltage" is the classification of an electric component or circuit, if its maximum working voltage is greater than 60 V and less than or equal to 1500 V of direct current (DC), or greater than 30 V and less than or equal to 1000 V of alternating current (AC). 3.27 " High Voltage Bus" is the electrical circuit, including the coupling system, for charging the REESS that operates on high voltage. 3.28 " Hydrogen-fuelled vehicle" indicates any motor vehicle that uses compressed gaseous or liquefied hydrogen as a fuel to propel the vehicle, including fuel cell and internal combustion engine vehicles. Hydrogen fuel for passenger vehicles is specified in UAE.S ISO 14687 and SAE J2719. 3.29 " Hydrogen storage system" indicates a pressurized container, pressure relief devices (PRDs) and shut off device that isolate the stored hydrogen from the remainder of the fuel system and the environment. 3.30 " Indirect contact" is the contact of persons with exposed conductive parts. 3.31 " Live parts" is the conductive part intended to be electrically energized in normal use. 3.32 " Luggage compartment" is the space in the vehicle for luggage accommodation, bounded by the roof, hood, floor, side walls, as well as by the electrical barrier and enclosure provided for protecting the power train from direct contact with live parts, being

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Cabinet Resolution of 2021 Regarding the UAE Regulation on Hydrogen-Fueled Vehicles System 19 separated from the passenger compartment by the front bulkhead or the rear bulkhead. 3.33 " Liquefied hydrogen storage system" indicates liquefied hydrogen storage container(s) PRDs, shut off device, a boil-off system and the interconnection piping (if any) and fittings between the above components. 3.34 " Lower flammability limit (LFL)" is the lowest concentration of fuel at which a gaseous fuel mixture is flammable at normal temperature and pressure. The lower flammability limit for hydrogen gas in air is 4 per cent by volume (83 of the Preamble). 3.35 " Maximum allowable working pressure (MAWP)" is the highest gauge pressure to which a pressure container or storage system is permitted to operate under normal operating conditions. 3.36 " Maximum fuelling pressure (MFP)" is the maximum pressure applied to compressed system during fuelling. The maximum fuelling pressure is 125 per cent of the Nominal Working Pressure. 3.37 " Nominal working pressure (NWP)" is the gauge pressure that characterizes typical operation of a system. For compressed hydrogen gas containers, NWP is the settled pressure of compressed gas in fully fuelled container or storage system at a uniform temperature of 15 °C. 3.38 " On-board isolation resistance monitoring system" is the device that monitors isolation resistance between the high voltage buses and the electrical chassis. 3.39 " Open type traction battery" is a type of battery requiring liquid and generating hydrogen gas that is released into the atmosphere. 3.40 " Passenger compartment (for electric safety assessment)" is the space for occupant accommodation, bounded by the roof, floor, side walls, doors, outside glazing, fron