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VSB6 update reforms rear wheel mods

The National Heavy Vehicle Regulator (NHVR) has introduced a new modification code to fit non-standard rear wheel components on heavy vehicles as part of the latest update to Vehicle Standards Bulletin 6 (VSB6).

The NHVR Manager Vehicle Safety and Performance, Peter Austin, said the update followed extensive consultation conducted during 2018.

The Modification Code D3 – Fitting of non-standard rear wheel components simplifies the certification process and allows Approved Vehicle Examiners to certify the modification without the need for applying to the NHVR, as was previously necessary,” said Austin.

“It was developed in response to an increase in the number of modification applications for the fitting of non-standard rear wheels to heavy vehicles.

“It covers the fitting of non-standard tyres and rims to heavy motor vehicle rear axles and heavy trailer rear axles.”

Austin said the update to VSB6 also includes a new emissions testing procedure for engines – which comes under Section A in the latest update.

The Simplified Emissions Test Procedure – Portable Emissions Measurement System also offers an alternative, realistic approach to emissions testing which significantly reduces the time and cost associated with this type of testing,” he said.

Vehicle Standards Bulletin 6 (VSB6): National Code of Practice Heavy Vehicle Modifications is the national standard for the most common modifications made to heavy vehicles.

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