The tractor and semi-trailer combination on the left is the most common type of heavy brick hauler in my country. The truck and mid-axle trailer combo on the right is far less usual. Both of them are rated at the same legal maximum weight of 50 metric tons. Besides bricks, such rigs are also used to transport (roofing) tiles and all kinds of concrete products.
The tractor, a MAN TGX with a steering pusher axle, tows a tridem axle semi-trailer with two steering axles (the second and the third) and a self-propelled roller crane.
The DAF CF truck, with a steering tag axle, tows a tridem mid-axle trailer. The crane is mounted on the truck’s rear. The biggest advantage of this set-up is that the trailer can be detached and parked, while the truck can maneuver itself into tight spaces without too much hassle.
In the past few years, I caught several of the usual suspects, like a Volvo FH with a Kennis semi-trailer, all set and ready to go.
And a stunning Volvo FH16 with a Vogelzang semi-trailer.
Here’s a demonstration video, showing a Scania 4×2 tractor and a Pacton semi-trailer with four axles (still a grand total of six axles, like all the others featured above). Get concrete and hit the bricks!