What are semi-trailers and full trailers?

[Margaret]

Trailers are divided into two types: full trailers and semi-trailers. A full trailer bears its total weight entirely by itself, while a semi-trailer shares part of its total weight with the towing vehicle. The differences between full trailers and semi-trailers are as follows: 1. The connection method with the towing vehicle differs. A full trailer connects its front end to the rear of the towing vehicle, which only provides pulling force without bearing weight. A semi-trailer rests the front half of its body on the fifth wheel coupling of the towing vehicle, with the rear axle of the towing vehicle bearing part of the trailer's weight. 2. Full trailers can increase cargo capacity, reduce fuel consumption, and thereby lower transportation costs. Semi-trailers must not exceed 17 meters in length, except for car carrier semi-trailers.

[MacMiranda]

I've driven trucks for nearly thirty years and seen countless trailers. Semi-trailers have their front ends resting on the tractor, sharing the weight with the truck head, just like the container trucks you see on highways—very stable, easy to load and unload, and less prone to tipping. Full trailers have their own chassis for independent support, not relying on the truck head, and can stand on their own, like equipment trailers used on construction sites, but you need to be extra careful when turning to avoid fishtailing. From my experience, semi-trailers are more fuel-efficient and efficient, making them the top choice for long-haul highway runs; full trailers offer higher flexibility, suitable for short distances or complex terrains, but they're harder to control. For safety, regardless of the type, regular checks on tires and brakes are crucial—I've seen many accidents caused by neglecting maintenance.

[VanBethany]

When I first got my driver's license, I was curious about the differences between trailers. A semi-trailer is like a big truck pulling a box, with the cab and trailer connected together sharing the weight, commonly seen on highways. A full trailer is more like an independent small vehicle with its own wheels for support, easier to tow, like those camping trailers. I once towed a full trailer with a friend's SUV and found it easy to turn but unstable over long distances due to swaying. In daily life, semi-trailers are mostly used for large-scale logistics transportation, being safer and more efficient; full trailers are suitable for leisure or temporary moving of goods at construction sites. It's important to pay attention to license plates and speed limits. For beginners, it's best to start practicing with small trailers to avoid accidents.

[DelNorah]

Crazy about the truck world! Semi-trailers are awesome, those big 18-wheelers hauling containers with the weight on the tractor, speeding down the road; full trailers offer more freedom with their independent structure that can be detached and parked on the ground, just like towing an RV—super cool. Each has its brilliant uses: semi-trailers save time and effort hauling containers at ports; full trailers are more flexible for moving or transporting equipment. I often watch truck races—semi-trailers handle turns more precisely; full trailers need more space to turn around but require skill to master. With good maintenance, they can run for many years—don’t forget to check the connection points and lights.