Vehicle Engineering & Compliance Resources
Use these resources to plan vehicle modifications, identify approval requirements and prepare engineering information for CVC.
Start with current regulator guidance
- Transport Victoria vehicle standards information (VSI)
- Australian Government Vehicle Standards Bulletins
- NHVR VSB6 heavy-vehicle modification guidance
The downloaded reference copies below may predate amendments. Check the issuing authority for the current version and applicability to your vehicle before relying on a document.
CVC practical guides: SSM vs modification approval, Vehicle Type Approval evidence and our worked axle-load example.
Wheelchair restraint layout planning: Visit Estraints, the separate specialist WTORS calculator and resource platform.
Request a quote for vehicle-specific engineering or approval support.
- National Class 1 Agricultural Vehicle and Combination Mass and Dimension Exemption Notice Operator’s Guide
- Higher Mass Limits (HML)
- Special Purpose Vehicles (SPV)
- Oversize Overmass (OSOM) Vehicles
- Safety & Compliance Alert Trailer Couplings
- Classes and Heavy Vehicles
- 1-Tonne Tri-Axle Mass Transfer Allowance (TMTA) Fact Sheet
NHVR-VEHICLE STANDARD GUIDES
- Industry Guide to In-Principle Support
- Code of Practice for the Approval of Heavy Vehicle Modifications
- NHVIM Fact Sheet – Brake Testing
- Creating Heavy Vehicle Daily Checks
- National Heavy Vehicle Inspection Manual
- PBS Combinations Fitted With Quad-Axle Groups
- NHVR Approved Guidelines for Granting Vehicle Standards
- VSG1 Driving Lamps
- VSG2 Changes to Heavy Vehicle Safety Standards
- VSG3 Semitrailer Rear Bumpers
- VSG4 Inspection of Drawbar Eyes
- VSG5 Converting A Vehicle Into A Motorhome
- VSG6 Modification to Heavy Vehicles NSW.pdf
- VSG7 Modifications to New Vehicles
- VSG8 Film on Bus Emergency Exits
- VSG9 Re-Rating of Gross Vehicle Mass (GVM)
- VSG10 Backlit Badges and Logos
- VSG11 Fitting of Additional Reflectors and Conspicuity Markings
- VSG12 Truck Mounted Attenuators
- VSG13 Rear Loading Waste Collection Vehicles in NSW
- VSG15 Front Underrun Protection Design and Installation Guidance
- VSG16 50mm Ball Couplings
- VSG16 FAQs 50mm Ball Couplings
- VSG17 Implementation of Tip Truck Hoisting System Requirements
- VSG18 Low Friction Plates on Fifth Wheels and Skid Plates
- VSG19 Vehicle Warning Signs
- VSG21 National Roller Brake Testing Procedure
- VSG22 Requirements For Tag Trailers
- VSG23 26m B-Double Car Carriers
- VSG24 Emergency Services Speed Limiting Exemption Notice
- VSG25 Connecting Advanced Braking Systems in Combination
- VSG26 Detainee Transport Vehicle Standards Exemption
- VSG27 Labelling Requirements for Hydrogen and Electric-Powered Vehicles
- VSG28 In-Service Emission Testing – Portable Emissions Measuring System Equipment
- VSG29 Rear Marking Plates and Do Not Overtake Turning Vehicle Signs
- VSG30 Vehicle Mounted Lifting Systems – Width Requirements
- VSG31 Road Trains – Trailer Couplings Requirements
- VSG32 Enhanced Braking Visibility
- VSG33 Implementation of the Road Vehicle Standards Act
- VSG34 Installation of Alternative Fuel Systems
VEHICLE STANDARD BULLETINS
VICROADS- VEHICLE STANDARDS INFORMATION
- VSI1 Bull Bars
- VSI2 Window Tinting and Films
- VSI3 Conditions for Registration of Imported Vehicles in Victoria
- VSI4 Standards for Registration Requirements for Motorcycles and Mopeds
- VSI5 Conversion of Vehicles to Motorhomes
- VSI6 Requirements for A-Frame Towing of Vehicles
- VSI12 Flashing Lights Other Lights and Reflectors
- VSI15 Additional Seat Belts
- VSI16 Tyre Maintenance and Repair
- VSI17 Child Restraint Anchorages
- VSI18 LHD Vehicles and Vehicles Converted to RHD
- VSI19 Modifying Seats or Seating Capacity
- VSI21 Seat Belts and Child Restraint Fitting Requirements
- VSI25 Motor Vehicle Body Repairs
- VSI26 Road Worthiness Requirements
- VSI27 LPG Conversions and Repairs
- VSI29 Fitment of Equipment Within Drivers Field of View
- VSI33 Guidelines for Modifications to CPS Vehicles
- VSI8 Guide to Modifications for Motor Vehicles
- VSI34 Guidelines For The Use of Bicycle Carriers
CVC Engineering & Approval Guides
Use these CVC guides to understand common approval pathways, engineering evidence and commercial-vehicle certification issues before a project is committed.
- Second Stage Manufacture vs State Vehicle Modification Approval
- Vehicle Type Approval Evidence Requirements
- Interstate Vehicle Approval Planning for Victorian Body Builders
- Vehicle Import Approval in Australia
- ADR Testing & Engineering Evidence
- Commercial Vehicle FEA & Structural Verification
- Truck Axle Load Calculation Worked Example
- 25-Year Bus Frame Inspections
- How to Choose a ROVER or ADR Compliance Consultant
Accreditation Partners
