A large canvas covering a road construction crashed down on cars as powerful winds blew.

Footage shows the large sheet of plastic swaying as it concealed an ongoing work under a bridge in Bangkok, Thailand on April 25.

The structure seemed sturdy enough to withstand bad weather until gusts snapped it off, along with the steel bars that held it.

It fell onto the stopped cars stuck in a traffic jam, and dragged some of the steel board signages which fell on one of the vehicles.

Driver Onsirin Vivi Chirngsaard, who was in one of the cars, said: ‘I am a safe driver. I went on a detour to avoid a truck carrying steel bars and pipes, only to be stuck in traffic where the canvas fell.

‘The stupid sheet wasn't even installed properly and became a hazard to the drivers. It was traumatising.'

Onsirin added that they didn't know what to do as the traffic was bad and there was no space to flee into on the motorway.

She said: ‘It is frustrating. What if a steel bar pierced through my car and stabbed my head? I felt like I was in a Final Destination movie.'

While no one was hurt, Onsirin said there was more than one car that had been scratched and dented by the collapsed structure.

She said: 'I hate this kind of neglect for safety. Who is going to take responsibility? I'm not sure what is going to happen.'

Thailand has one of the world's worst road safety records. Ministers have set the goal of reducing fatalities from 32.7 deaths per 100,000 people to 12 per 100,000 people by the year 2027.

However, a lack of road safety education in schools, cheap loans for cars, notoriously easy driving tests, police failures to enforce road laws as well as endemic corruption and chronic under-investment in infrastructure hamper the efforts.