What Is a Low Loader?
A low loader is a specialist semi-trailer with a dropped deck that sits 700–950 mm from the road surface — significantly lower than the 1,200–1,500 mm deck height of a standard flatbed trailer. The lowered deck allows tall, heavy machinery to be transported within legal road height limits. Low loaders are the standard trailer type for construction plant, industrial machinery, and abnormal load transport across Europe.
What makes a low loader different from a standard trailer?
A low loader's deck sits 700–950 mm from the road surface — half the height of a standard flatbed — which allows loads up to 4.0–4.5 metres total height to stay within European road clearance limits.
A standard flatbed deck at 1,200–1,500 mm leaves usable load height before the total reaches the practical 4.0 metre road clearance threshold. A low loader deck gives the same load more vertical space by lowering the cargo position.
The dropped deck results from two structural drops in the trailer frame. The first drop sits immediately behind the gooseneck and the second drop rises back up in front of the rear axle bogie.
A low loader is classified as a specialist vehicle type semi-trailer alongside curtainsiders, flatbeds, box bodies, and tarpaulin sprinters.
What is a gooseneck on a low loader?
The gooseneck is the raised front section of a low loader that bridges the height difference between the tractor's fifth-wheel coupling and the low deck — the structural element that makes the dropped deck possible.
A fixed gooseneck is permanently welded to the trailer frame. A detachable gooseneck separates from the trailer frame on site, allowing front loading for heavy plant with very low ground clearance.
A low loader is pulled by a semi-trailer truck — the tractor unit with the fifth-wheel coupling that the gooseneck connects to.
What are the main types of low loader?
Three main low loader types cover European heavy haulage requirements — the step-frame, the extendable, and the semi-low loader — each matched to a different cargo height, weight, and deck length.
The step-frame low loader is the most common configuration in European heavy plant transport. The extendable low loader extends its deck for long loads such as wind turbine blade segments, steel beams, crane boom sections, and prefabricated bridge components.
The semi-low loader sits between a standard flatbed and a full step-frame at 1,000–1,200 mm deck height.
What cargo is transported on a low loader?
Low loaders carry heavy or tall cargo that cannot be transported on a standard flatbed trailer — construction plant, industrial machinery, energy sector equipment, and agricultural machinery are the primary cargo categories across European operations.
Construction plant dominates low loader volumes — tracked excavators, wheeled loaders, bulldozers, compactors, and crawler cranes move between jobsites on step-frame low loaders throughout Belgium and Europe.
Do low loader movements require special permits?
Low loader movements that exceed standard EU road dimensions — over 40 tonnes GVW, over 2.55 metres width, or over 4.0 metres height — require abnormal load permits from the road authority in each country the vehicle transits.
EU Directive 96/53/EC sets the standard road dimensions across EU member states. Loads exceeding these dimensions are classified as abnormal transport and require individual movement orders per country per journey.
How does Go Trans arrange low loader transport?
Go Trans arranges heavy plant and machinery transport using low loader trailers through specialist carrier partners — covering standard legal loads up to 40 tonnes and abnormal load movements requiring individual permits across Belgium and European destinations.
For heavy and oversized freight, Go Trans coordinates carrier selection, permit requirements, and documentation through freight services — including specialist heavy haulage operators for both within-limit and abnormal load movements.