Type Approval and IVA Tests for Trailers in the UK: What You Need to Know
- Brent
- Oct 6
- 2 min read
So, you’ve built yourself a shiny new trailer or you’re thinking of doing it — good on ya! But before you hit the open road, there’s one thing you can’t skip: Type Approval and the Individual Vehicle Approval (IVA) test. It’s not just red tape — it’s what makes sure your trailer’s legal, safe, and ready to tow in the UK.
What is Type Approval, Anyway?
Type Approval is the official stamp of approval that says your trailer meets UK safety and construction standards. Think of it as your trailer’s passport — without it, you’re not going anywhere on public roads.
For manufacturers, this means testing and certifying that every trailer of a certain type meets the same standard. For home-built or one-off trailers, that’s where IVA testing comes in.
The IVA Test Explained
The Individual Vehicle Approval (IVA) test is a full inspection of your trailer’s build quality and safety features. Whether your trailer’s braked or unbraked, it needs to pass this test before it can legally touch the tarmac.
During the IVA test, examiners check everything from:
Brakes and couplings – Are they compatible and up to standard?
Lighting and reflectors – Positioned and working correctly?
Wheels and tyres – Safe, roadworthy, and correctly rated?
Markings and VIN plate – Properly displayed?
Basically, if it rolls, stops, or lights up, it’s getting checked.
Building a Trailer from Scratch? Here’s What You’ll Need
If you’re building your own trailer, you’ll need to apply for an IVA test before it’s road-legal. That means filling out the application form, reading the guidance notes, and making sure your design ticks every box before inspection day.
If your trailer has brakes, you’ll also need to provide:
Type approval documents for the coupling and braking system
A Certificate of Compatibility, usually from the coupling manufacturer
Skip these, and your trailer might not make it through the test.
Why the IVA Test Matters
Sure, it might sound like a bit of admin — but the IVA test exists for a good reason. It’s there to make sure your trailer’s safe, not just for you but for everyone else on the road.
Passing the test means peace of mind that your trailer is solid, roadworthy, and legal. No guessing, no grey areas, no “she’ll be right” when she actually might not be.
Brent’s Take
At Brent, we’re all about keeping trailers safe, compliant, and easy to hire or sell. Whether you’re a hire outlet, a builder, or a weekend warrior towing your pride and joy, knowing your trailer’s passed its IVA test is a non-negotiable.
If you’re unsure about what’s needed or you’re looking for a compliant trailer ready to go, you’ll find certified, road-ready options across the Brent platform — so you can tow with confidence.
-Brent
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