The truck carrying the timber tipped over when it got to the pit.
The heavy excavator truck went too fast and messed up, making it fall on the road and block it.
The truck was getting loaded, and the pallets were all messed up, so the loads fell off the trailer at the bend.
Concrete molds fall off the trailer at the slightest movement when they are not appropriately loaded into the truck trailer
The bucket used by attaching to the mast of the cranes fell to the ground while being transported by the truck.
While the brakes on the wheel of the vehicle were being repaired, the unbalanced load overturned the vehicle, the mechanic and the driver were saved from...