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If your oversize overmass vehicle doesn't comply with mass, dimension or operating requirements set out in a gazette notice, you can apply for a Class 1 Oversize Overmass (OSOM) vehicle access permit through the National Heavy Vehicle Regulator (NHVR). 

For the most up-to-date information on how to apply for a Class 1 Oversize Overmass (OSOM) vehicle access permit, visit the National Heavy Vehicle Regulator website. 

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