NHVAS, HML and 77G Explained in Plain English
What these transport credentials mean — and why they matter to you as a customer.
NHVAS
The National Heavy Vehicle Accreditation Scheme is an audited system for heavy vehicle maintenance and mass management.
HML
Higher Mass Limits allow eligible vehicles to carry more weight on approved routes when strict conditions are met.
77G
A 77G licence allows a depot to hold goods that are still under customs control.
Dangerous goods licence
Required to transport packaged dangerous goods with placarded vehicles and trained drivers.
When choosing a carrier, ask which credentials they hold and request evidence.
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