Long Steer Trailers - LST
A long steer trailer with a length of 18.55 meters refers to the overall length of the articulated vehicle, including both the tractor unit and the trailer. In the context of heavy goods vehicles (HGVs), such as articulated lorries this length measurement typically includes:
Tractor Unit: The front part of the articulated vehicle where the driver sits and controls the vehicle. The tractor unit includes the engine, cab, and fifth wheel coupling mechanism for attaching the trailer.
Trailer: The rear part of the articulated vehicle that carries the load. Trailers come in various types and configurations, including flatbeds, box trailers, refrigerated trailers, tanker trailers, and more.
Vehicles using the LSTs will still be subject to the 44-tonne weight limit but are expected to cause less road damage due to their steering axles.
After the extended trail period finishes on 29th February 2024, operators of these new longer trailers will be expected to ensure that routes are appropriate for the longer trailers, with risk assessments that take into account the unique specifications of the trailers.
When specifying the length of an articulated vehicle, such as "18.5 meters," it usually refers to the combined length of both the tractor unit and the trailer when they are fully connected and aligned. This length measurement is crucial for determining the vehicle's overall size, manoeuvrability, and compliance with regulations governing HGV operations, including restrictions on vehicle length imposed by transportation authorities.
Longer trailers like the one mentioned (15.6 meters) are often used for transporting larger or bulkier loads, as they offer greater capacity compared to shorter trailers. However, it's important for drivers and operators to be aware of any legal limitations or restrictions regarding vehicle length, as these may vary depending on the jurisdiction and the specific type of road or route being travelled.
In summary, a 15.6-meter long steer trailer refers to an articulated vehicle with a total length of 15.6 meters, including both the tractor unit and the trailer, and it's commonly used for transporting heavy goods and freight over long distances.