At ModiCert, we specialise in heavy vehicle modifications that meet the highest safety and compliance standards. Whether you’re upgrading, repurposing, or enhancing vehicle performance, our expert heavy vehicle engineer in Victoria ensures every modification is professionally assessed and tailored to your needs. We also assist in securing a VASS approval certificate, streamlining the certification process so your vehicle meets all regulatory requirements with ease.
We’ve worked with all kinds of heavy vehicles and understand what it takes to get the job done right. Our team focuses on clear communication, reliable service, and quick turnaround times, making ModiCert a trusted choice for heavy vehicle owners.
ModiCert provides VASS certification (Blue Plate) for heavy vehicle modifications, ensuring compliance with related regulations.
Whether you need support with a custom build, conversion, or structural change, our VASS signatory team makes sure your heavy vehicle is safe, compliant, and road-ready. Our VASS Signatory Services simplify every stage of heavy vehicle modifications for a smoother approval process. Explore our full range of services below to see how we can help you get moving with confidence.
Inspect and certify suspension modifications and suspension upgrades for heavy vehicles, including replacement suspensions, alternative suspension systems, and air suspension conversions. ModiCert provides engineering assessments and VASS certification to ensure vehicle safety, compliance, and performance in accordance with Australian heavy vehicle standards.
Inspect and certify brake system modifications on heavy vehicles and trailers in accordance with VSB6 requirements. ModiCert provides engineering assessments and VASS certification for brake upgrades, air brake systems, ABS installations, brake component replacements, and other brake-related modifications. Our certification process verifies braking performance, system compatibility, and compliance with Australian heavy vehicle standards to ensure safe and reliable vehicle operation.
Inspect and certify chassis modifications on trucks and trailers in accordance with VSB6 requirements. ModiCert provides engineering assessments and VASS certification for chassis extensions, chassis shortening, wheelbase changes, structural repairs, frame reinforcements, and other chassis-related modifications. Our certification process verifies structural integrity, load-carrying capability, and compliance with Australian heavy vehicle standards to ensure safe and reliable vehicle operation.
Inspect and certify body mounting and tipper body installations on heavy vehicles in accordance with VSB6 requirements. ModiCert provides engineering assessments, structural integrity reviews, and VASS certification for new body installations, body replacements, tipper conversions, and truck body modifications. Our certification process verifies that body mounting systems, chassis attachments, subframes, load distribution, and associated modifications are designed and installed to meet Australian heavy vehicle safety and compliance requirements.
Inspect and certify Fifth wheel couplings, tow couplings, kingpins, and related towing systems for heavy vehicles. ModiCert provides engineering assessments and VASS certification to verify compliance, structural integrity, and safe towing performance for trucks, prime movers, and trailers in accordance with Australian heavy vehicle standards.
VASS certification for B-Double and Road Train ratings, GVM upgrades and downgrades, ATM upgrades and downgrades, GCM changes, and heavy vehicle mass rating modifications. ModiCert assists vehicle owners, operators, and manufacturers with compliance approvals and certification for trucks, prime movers, and trailers.
ModiCert provides Chartered Engineer consultancy services including engineering assessments, compliance reviews, structural design verification, finite element analysis (FEA), technical investigations, project valuations, and professional engineering reports. Led by Chartered Mechanical Engineer Eiman Nosrati, we assist clients with regulatory approvals, export certification, heavy vehicle compliance, and engineering documentation for commercial, industrial, and transport projects across Australia.
ModiCert provides Vehicle ADR and Regulatory Compliance assessments and certification services for vehicles requiring engineering approval, registration, importation, modification, or regulatory compliance verification. Our services include reviews against applicable Australian Design Rules (ADRs), Vehicle Standards Bulletins (VSBs), state registration requirements, and industry standards. We assist vehicle owners, manufacturers, importers, and fleet operators by providing compliance assessments, engineering reports, certification documentation, and technical advice to help ensure vehicles meet Australian regulatory and safety requirements.
ModiCert provides Chartered Engineer sign-off services for engineering projects requiring independent certification, technical verification, and regulatory approval. Led by Chartered Mechanical Engineer Eiman Nosrati, we provide professional sign-offs for vehicle modifications, structural assessments, engineering designs, compliance reports, technical calculations, finite element analysis (FEA), and other projects requiring formal engineering certification. Our services support regulatory, commercial, export, insurance, and project approval requirements across a wide range of industries.
ModiCert provides Drawbar Finite Element Analysis (FEA) and engineering certification services to verify the structural strength, durability, and safety of heavy vehicle drawbars. Using advanced engineering simulation and stress analysis techniques, we assess drawbar designs against ADR 62 requirements to support compliance, certification, and registration approval. Our FEA services help manufacturers, body builders, and vehicle owners demonstrate that their drawbar systems are capable of safely withstanding operational loads and towing forces while meeting Australian regulatory standards.
Static and Dynamic simulation + Report signed by a Chartered Engineer.
ModiCert provides Towbar Finite Element Analysis (FEA) and engineering certification services to verify the structural strength, durability, and safety of vehicle towing systems. Using advanced engineering simulation and stress analysis techniques, we assess towbar designs against ADR 62 requirements to support compliance, certification, and registration approval. Our FEA services help manufacturers, vehicle modifiers, and fleet operators demonstrate that their towbar systems can safely withstand towing loads and operational forces while meeting Australian regulatory standards.
Static and Dynamic simulation + Report signed by a Chartered Engineer.
ModiCert provides Chassis Finite Element Analysis (FEA) and engineering assessment services to verify the structural strength, durability, and performance of heavy vehicle chassis. Using advanced engineering simulation and stress analysis techniques, we evaluate chassis designs, modifications, repairs, extensions, and reinforcements to identify critical stress areas and confirm structural integrity. Our FEA services help manufacturers, body builders, and fleet operators demonstrate compliance, improve design reliability, and ensure their vehicles can safely withstand operational loads and demanding service conditions.
FEA Report + Report signed by a Chartered Engineer.
ModiCert provides Truck Body and Tray Finite Element Analysis (FEA) and engineering assessment services to verify the structural strength, durability, and performance of truck bodies, trays, and load-carrying structures. Using advanced engineering simulation and stress analysis techniques, we evaluate body and tray designs under operational loading conditions to identify critical stress areas and confirm structural integrity. Our FEA services help manufacturers, body builders, and fleet operators improve design reliability, optimise structural performance, and ensure their vehicles can safely withstand heavy loads and demanding operating environments.
FEA Report + Report signed by a Chartered Engineer.
ModiCert provides Skid Plate Finite Element Analysis (FEA) and engineering assessment services to verify the structural strength, durability, and performance of skid plates and fifth wheel mounting systems. Using advanced engineering simulation and stress analysis techniques, we evaluate skid plate designs, modifications, repairs, and reinforcements to identify critical stress areas and confirm structural integrity under operational loading conditions. Our FEA services help manufacturers, repairers, and fleet operators demonstrate compliance, improve design reliability, and ensure their skid plate can safely withstand towing forces and demanding service conditions.
FEA Report + Report signed by a Chartered Engineer.
ModiCert provides Lifting Bar Finite Element Analysis (FEA) and engineering assessment services to verify the structural strength, load-carrying capacity, and safety of lifting bars and lifting equipment. Using advanced engineering simulation and stress analysis techniques, we evaluate lifting bar designs under operational loading conditions to identify critical stress areas and confirm structural integrity. Our FEA services help manufacturers, equipment owners, and operators improve design reliability, verify lifting capacity, and ensure lifting equipment can safely withstand service loads while meeting applicable engineering and safety requirements.
FEA Report + Report signed by a Chartered Engineer.
ModiCert provides Finite Element Analysis (FEA) services to evaluate the structural strength, durability, and performance of components, assemblies, and engineered structures. Using advanced engineering simulation and stress analysis techniques, we identify critical stress areas, assess load-carrying capacity, and verify structural integrity under real-world operating conditions. Our FEA services support product development, design verification, compliance certification, and engineering decision-making across heavy vehicle, transport, manufacturing, and industrial applications.
ModiCert provides Engineering Design, 3D Modelling, and Technical Drawing services to support product development, vehicle modifications, manufacturing, and custom engineering projects. Using advanced CAD software, we create accurate 3D models, fabrication drawings, assembly drawings, and engineering documentation to assist with design verification, manufacturing, certification, and compliance requirements. Our services help manufacturers, body builders, and vehicle owners transform concepts into practical, buildable, and compliant engineering solutions.
Certifying heavy vehicle modifications is crucial to ensure any changes meet stringent safety and legal standards, especially for heavy vehicle modification services in Victoria. Modifications such as truck chassis extensions, suspension upgrades for heavy vehicles, or GVM upgrades can significantly impact roadworthiness and compliance. Certification guarantees these specialised heavy vehicle alterations are safe, reliable, and compliant with national codes like VSB6, ensuring heavy vehicle compliance in Victoria.
This process not only protects drivers and other road users by maintaining vehicle safety but also simplifies regulatory approval, allowing modifications to be legally recognised across all Australian states. Additionally, certification provides clear documentation through modification plates, making future inspections and resale easier.
In essence, vehicle modification certification is vital for ensuring heavy vehicles remain safe, legal, and fit for purpose after any modification.
✔ Static, Dynamic & Fatigue Analysis – Tailored to your project requirements.
✔ Accurate Load Determination – Selecting the correct FEA methodology for precise results.
✔ Regulatory Compliance – Ensuring designs meet Australian Design Rules (ADR), Australian Standards (AS), and other regulations.
✔ Weak Point Identification & Optimization – Enhancing safety, efficiency, and performance.
✔ Certified Engineering Reports – Issued and signed by a Chartered Engineer for regulatory approval.
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In Australia, a heavy vehicle has a gross vehicle mass (GVM) or aggregate trailer mass (ATM) over 4.5 tonnes. Only changes that affect design, safety, or compliance need approval. Small additions like extra lights, aerials, or air-conditioning usually do not require it if the vehicle stays compliant. Major or safety-related changes such as suspension work, chassis modifications, or mass rating upgrades must be approved by an engineer under the Heavy Vehicle Modifications Code (VSB6).
A VASS (Vehicle Assessment Signatory Scheme) certificate is an engineer’s approval for a heavy vehicle modification. It confirms the work meets all required standards. Any heavy vehicle over 4.5 tonnes GVM modified under VSB6 rules needs a VASS certificate. This approval is accepted across Australia.
Any change to structure or systems that affects safety or compliance often needs certification. Examples include suspension upgrades, brake changes, chassis or wheelbase adjustments, custom body mounts, tow coupling or fifth wheel installation, and changes to mass ratings (GVM, ATM, GCM). Accessories like extra lights or radio aerials usually don’t require it.