FAQS.
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...

Why does trailer paint warranty matter?
Paintwork isn’t only about how a trailer looks when it leaves the factory. For commercial trailers working across the UK, the finish is exposed to

Why lightweight Box Vans make sense for parcel operations
When you’re running hundreds of trailers, small weight savings don’t stay small for long. Parcel operations are built around scale. High volumes, busy schedules and

Could bamboo be the future of commercial trailer flooring?
Trailer floors take a beating. Could bamboo really do the same job as traditional hardwood? Sustainability matters, but a commercial trailer floor still needs to