Low-loader (Lowbed)
Also known as: Lowbed · Low-loader · Lowboy · Semi-low-loader · Kamarshekan
A low-loader is a trailer with a very low deck, so tall and heavy machines can be carried without going over the height limit. Many have ramps so vehicles can drive on.
Names in other languages
- English
- Low-loader (Lowbed)
- Türkçe
- Lowbed dorse
- فارسی
- کمرشکن
- Русский
- Низкорамный трал
- 简体中文
- 低平板半挂车
- العربية
- مقطورة منخفضة (لوبد)
Specifications
Typical figures — they vary by manufacturer and by country rules on weights and sizes.
| Specifications | Semi-low-loader | Low-loader |
|---|---|---|
| Internal length | 9,000–11,000 mm | 6,000–9,000 mm |
| Internal width | 2,550 mm | 2,550 mm |
| Deck height | 850–950 mm | 350–600 mm |
| Max payload | 30,000–45,000 kg | 40,000–80,000 kg |
| Loading method | Rear · Top | |
Typical cargo
Construction machines (excavators, bulldozers, cranes), tractors, industrial machinery, transformers, and other tall or heavy items.
In plain words
A semi-low-loader has a step at the front and a low main deck, at about 0.9 m. A full low-loader has a well (a dropped section between the front and the rear wheels) that can be as low as about 0.35–0.6 m. Machines such as excavators and bulldozers drive on over ramps at the rear; other loads are lifted on by crane. Many low-loaders can be widened or have more axles for heavier loads.
Most low-loader loads are wider, taller, or heavier than normal limits, so they need special transport permits. The route may need a survey for bridges, tunnels, and power lines, and escort vehicles may be required. Plan these steps early, because permits can take days or weeks.
Advantages
- The low deck keeps tall machines under height limits.
- Tracked and wheeled machines can drive on over ramps.
- Can be widened or given more axles for heavier loads.
Limits
- Oversize permits, route surveys, and escorts add cost and time.
- The well is short, so long items may not fit.
- Travel can be limited to certain roads, days, or hours.
Example from real shipping
A contractor moves a 35-tonne excavator from Istanbul to a site in Georgia. The excavator drives onto a low-loader's well, which keeps the total height under 4 m. The load is 3.2 m wide, so the forwarder arranges oversize permits in both countries and an escort car.
Related terms
- Modular Trailer (HMT)A modular trailer is built from axle lines that are coupled end to end and side by side. Hydraulic suspension keeps the load level, and the capacity grows with every axle line — up to hundreds of tonnes.
- Extendable trailerAn extendable trailer is a flatbed or low-loader whose deck can slide out (telescope) to carry very long loads, then close again for the trip back.
- OOGOOG cargo is cargo that sticks out beyond the normal outside size of a container — too high, too wide, or too long. It usually travels on a flat rack, open top, or platform.
- Road vehicle typesA side-by-side comparison of the trucks and trailers used in road freight: load space, payload, volume, pallet places, loading method, and typical cargo.
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Request a QuoteThis glossary is general information, not legal or customs advice. Rules, fees, and practice can differ by carrier, port, and country.