Document ID: chunk:federal_register_of_legislation:F2024L00446:front:0:p25
Version: federal_register_of_legislation:F2024L00446
Segment Type: other
Provision Reference: 
Character Range: 71395–74307

fuel vapour. This ventilation route shall also be the only one used when the tank pressure exceeds its safe working pressure.
6.1.4. Vehicle testing condition
6.1.4.1. The types and amounts of lubricants and coolant for emissions testing shall be as specified for normal vehicle operation by the manufacturer.
6.1.4.2. The type of fuel for emissions testing shall be as specified in Annex B3 to this Regulation.
6.1.4.3. All emissions controlling systems, including evaporative emissions controlling systems shall be in working order.
6.1.4.4. The engine shall be designed to avoid crankcase emissions.
6.1.4.5. The tyres used for emissions testing shall be as defined in paragraph 2.4.5. of Annex B6 to this Regulation.
6.1.5. Fuel tank inlet orifices
6.1.5.1. For Level 1A;
Subject to paragraph 6.1.5.2., the inlet orifice of the petrol or ethanol tank shall be so designed as to prevent the tank from being filled from a fuel pump delivery nozzle which has an external diameter of 23.6 mm or greater.
For Level 1B;
No requirement for fuel tank inlet orifices.
6.1.5.2. Paragraph 6.1.5.1. shall not apply to a vehicle in respect of which both of the following conditions are satisfied:
6.1.5.2.1. The vehicle is so designed and constructed that no device designed to control the emissions shall be adversely affected by leaded petrol; and
6.1.5.2.2. The vehicle is conspicuously, legibly and indelibly marked with the symbol for unleaded petrol, specified in ISO 2575:2010 "Road vehicles -- Symbols for controls, indicators and tell-tales", in a position immediately visible to a person filling the petrol tank. Additional markings are permitted.
6.1.6. Provision shall be made to prevent excess evaporative emissions and fuel spillage caused by a missing fuel filler cap. This may be achieved by using one of the following:
6.1.6.1. An automatically opening and closing, non-removable fuel filler cap;
6.1.6.2. Design features which avoid excess evaporative emissions in the case of a missing fuel filler cap; or
6.1.6.3. Any other provision which has the same effect. Examples may include, but are not limited to, a tethered filler cap, a chained filler cap or one utilising the same locking key for the filler cap as for the vehicle's ignition. In this case, the key shall be removable from the filler cap only in the locked condition.
6.1.7. Provisions for electronic system security
6.1.7.1. Any vehicle with an emission control computer, including an evaporative emission control computer, including when integrated in an exhaust emissions control computer, shall include features to deter modification, except as authorised by the manufacturer. The manufacturer shall authorise modifications if those modifications are necessary for the diagnosis, servicing, inspection, retrofitting or repair of the vehicle. Any reprogrammable computer codes or operating parameters shall be resistant to tampering and