Vehicles exempt from the SRT calculation.

Section 3.15(1) of the rule states that:

A vehicle of Class NC or Class TD, whether laden or unladen, must comply with an SRT of at least 0.35 g unless the vehicle is-

    1. a vehicle of Class NC that does not have a deck or body on which to carry a load and is fitted with a turntable coupling to tow a semi-trailer; or

    2. a vehicle operating under section 6, or with a vehicle axle index above 1.1 and operating under an overweight permit, or both, provided that the operator of the vehicle complies with the conditions of the permit and the applicable requirements in section 6; or

    3. a vehicle that is being used on a road or portion of a road that is designated as a road construction zone under regulation 12 of the Heavy Motor Vehicle Regulations 1974; or

    4. a vehicle that is being used on a road or portion of a road that is a roadworks zone approved by the road controlling authority; or

    5. a vehicle that is not normally used on a road and that a road controlling authority has authorised to cross a road; or

    6. a vehicle that is designed exclusively for transporting earth or other bulk material and that may only be used unladen on a road; or

    7. a vehicle with a tipping body, but only when the tipping body is raised for the purpose of discharging a load at low speed; or

    8. a vehicle recovery service vehicle that is principally designed to tow or transport a heavy motor vehicle; or

    9. a vehicle first registered before 1 January 1940.

Section 3.15(2) of the rule states that:

For the avoidance of doubt, a high-productivity motor vehicle must comply with the minimum SRT requirements except, if the vehicle is a vehicle with a tipping body, when the tipping body is raised for the purpose of discharging a load at low speed.

 

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