The incident involved a dump truck traveling at high speed on the expressway with its bed raised, striking the overhead gantry forcefully. The impact caused the entire steel gantry frame and its signage system to collapse onto the road, shattering and scattering debris across all lanes. The truck continued for a distance, dragging a section of the gantry frame caught on its bed. Fortunately, no vehicles were alongside at the time, and following vehicles reacted promptly, ensuring safety.

Driving skills: Before entering traffic, dump truck and crane operators must thoroughly check the vehicle's lifting system and ensure the truck bed is fully lowered before driving. It is advisable to equip the cabin with an unlowered bed warning signal.

Additionally, all drivers should constantly observe surrounding vehicles. If unusual signs are noticed: such as a truck with a raised bed, spilling cargo, or losing control, drivers should immediately reduce speed and maintain a safe distance. If a gantry or obstacle collapses onto the road, drivers should calmly brake, maintain a firm grip on the steering wheel, and check rearview mirrors before changing lanes to avoid collisions with vehicles in adjacent or following lanes.

Nguyen Vu