What are LST’s (Longer Semi-Trailers)?
LST is short for “Longer Semi-Trailer”. These are a familiar sight on UK roads since the initial trial in 2012, under strict Department for Transport guidelines. On May 31st 2023, legislation came into effect within Great Britain to allow LST’s on the roads as a special type under Statutory Instrument 2023/524 – The Road Vehicles (Authorisation of Special Types) (General) (Amendment) Order 2023. This amended -The Road Vehicles (Authorisation of Special Types) (General) Order 2003.
How much longer is the LST trailer?
Up to 2.05m longer!
That’s right, the LST can be up to 2.05m longer than a standard 13.6m trailer. This takes the total length of the LST to 15.65m.

Operators Responsibilities…
Operation requirements for LST trailers that were mandatory during trial phase have now been modified, giving clear guidance for operators to adhere to when operating this type of trailer.
To learn more about your responsibilities for operating LST trailers click here:
You can also read the Statutory Instrument legislation here:

Why use LST trailers?
By increasing the length of the trailer by up to 2.05m, allows you to increase your payload by an extra 4 pallets, or 9 more cages with each consignment. This equates to 15% extra capacity per full load! A fully loaded Longer Semi-Trailer “LST” also reduces the number of required journeys, overall emissions, congestion & collision risk.
Longer Semi Trailers > Less Trucks > Less Fuel > Less Maintenance.
Cheaper long-term operations.

Increasing Demand
Since the introduction of legislation allowing LST trailers on GB roads, Montracon is experiencing increased demand from operators due to the benefits LST’s bring.
Montracon’s extensive experience in providing LST trailers to the industry during the decade long trial means it is now well positioned to offer various specifications and can accommodate customers’ requirements.

What LST’s do Montracon offer?
Check our some of our latest news...

The all-new Montracon Website
Introducing the all-new montracon.com Your upgraded Montracon experience is here – faster, smarter, and built around you. We’re excited to unveil the all-new montracon.com –

Martin Group Acquires Montracon – A New Chapter Begins for a Trusted Name in Transport
Montracon Limited, a leading manufacturer of high-quality trailers for the road transport industry and a cornerstone of UK manufacturing for nearly 50 years, is proud

Montracons Sales Team: Here To Help With All Your Trailer Needs
The Friendly Faces Behind the Trailers; Meet the Experts Behind the Service. At Montracon, our commitment to customer satisfaction starts with the people at the