Frequently Asked Questions (FAQs)
This FAQ and Knowledge Library provides clear, technical answers on commercial vehicles, trailers and transport operations. It is structured to support operators, fleet managers and engineers who need accurate guidance rather than marketing commentary.
Topics typically include:
- Regulatory compliance and enforcement requirements
- Technical how-to guidance and system explanations
- Industry terminology and definitions
- Operational considerations for fleets
- Common product and specification queries
What is a cant rail on a trailer?
ECMT conformity certificate explained for HGVs
What is an articulated trailer?
What is STGO? Special Types General Order Explained
Pallet standards and pooling systems in UK and European logistics
ADR regulations explained for dry freight vehicles
Operator Compliance Risk Score (OCRS) explained
Maintenance Provision Rating Scheme (MPRS) explained
Fleet Operator Recognition Scheme (FORS) explained
LOLER compliance for lifting deck trailers
Conspicuity Markings for Commercial Vehicle Bodywork
HGV Combination Length Extension | Cab, Aero & Safety
Turning Circle Requirements for HGV Trailers
Where are VIN stamps and chassis plates | What do they show?
How We Use Steel in Commercial Vehicle Manufacturing
How Should You Clean a Trailer Floor?
Trailer Steering Axles Explained: Self, Positive & Command Steer
Understanding the UK Direct Vision Standard (DVS)
How Exactly Do HGV Trailer Brakes Work?
UK Bulk Diesel Price History and Trends
Protection For Your Don-Bur Trailer: A Comprehensive Guide
What Rope Lubricant Is Recommended For Lifting Decks?
Transformers | Understanding Power Needs for Lifting Decks
Are there any regulations for trailer rollover stability?
What is a trailer suspension air bag | What are they for?
What are thermoplastic mudguards?
Confused by Floor Point Load Ratings? We Have the Answers!
The Future of Trucking is Here: Understanding VECTO's Impact
Roller Brake Test | Your Guide to Vehicle Braking Assessment
GSR2: EU Safety Regulation 2019/2144 for N & O Vehicles
EU Vehicle Classification for Goods Vehicles and Trailers
Aerodynamic Teardrop Trailer Case Studies & Trials
Load Restraint Requirements for Heavy Goods Vehicles
Safe Loading Practices: A Guide for Hauliers & Operators
How can I reduce my HGV fuel costs?
UK HGV Regulations for Drivers and Operators Explained
What are the Brake Park/Shunt valves and what do they do?
What is a Suspension Raise/Lower Valve and How Does it Work?
Understanding Bridge Height Restrictions for HGVs
What Documents Are Issued With New Trailers?
Lifting Deck Maintenance Training
How can I ensure HGV drivers couple up correctly?
What is "Flap and Valance"?
Does Don-Bur repair trailers that have been damaged?
Does Don-Bur provide servicing, maintenance and MOT?
Does Don-Bur supply after-market parts?
Commercial vehicle finance options | Don-Bur
What is a 'skele' or skeletal trailer?
How many pallets can you fit on a trailer?
HGV Trailer Couplings: Types, Safety & Coupling Procedures
What are "Nappy" and "Kite" Load Restraint Systems?
What exactly is an HGV bogie?
What is a pelmet and why is it needed?
What is an HGV underrun and why does it matter?
What are the types of (MHE) Materials Handling Equipment?
What is "traction" in the HGV logistics industry?
What is a "Rigid" body?
What is a "shunter" or "tug"?
What is an HGV trailer step-frame, swan-neck or goose-neck?
What is the trailer bed plate or rubbing plate?
What is an HGV trailer Side Rave?
What are trailer landing legs?
What is a trailer "Kingpin"?
What are trailer coupling "Suzies"?
How to Read Tyre Sizes and Markings
What is 'TIR' on commercial trailers?
How tall are double deck trailers?
What Is An Expected Commercial Trailer Lifespan?
What is an HGV tractor fifth wheel?
What is an HGV trailer ECU?
What Sort of HGV Trailer Tail-Lifts Are There?
EN 12195 Load Restraint Standard Guide
EBPMS | Electronic Braking Performance Monitoring System
What are the different types of HGV landing leg feet?
How does a hydraulic double deck trailer work?
What is HGV Trailer Roll Stability? (RSS, RSP or RSC)
What is HGV Trailer Rollaway And Why Does It Happen?
What is Commercial HGV Trailer Vehicle Type Approval?
EN 12640 load restraint and lashing point standard
PVC Curtains for Trailers and Rigids
Can you design and produce livery and graphics?
Where can I find wiring diagrams & schematics?
Where can I get LOLER/weight test certificates/ inspections from?
Request Don-Bur Trailer Build Records and Data Sheets
Understanding TPMS / Tyre Pressure Monitoring And Reg 141
Legally, What Is The Biggest HGV / Trailer?
Do you make and supply load restraint / straps / nets?
EN 12642-XL Load Containment Standard Explained
How much payload can I carry on an HGV trailer?
What are the frequencies for Lifting Deck maintenance?
When is my first HGV MOT due?
What is an ISO neck profile on a trailer? (ISO 1726)
DVSA Guide to Maintaining Roadworthiness | 28 April 2025
Don-Bur company insurance cover
How to Access Don-Bur Manuals and Instructions
Correct Action for Red or Amber ABS/EBS Warning Lamps on HGVs
Maximum trailer axle and bogie weights in the UK
A Guide to Aerodynamics - How It Affects HGVs
