Eleven construction workers died and several were injured when the truck they were travelling on ploughed through a highway guard rail and plunged onto the N4 platinum highway, which is still under construction.

Eleven construction workers died and several were injured when the truck they were travelling on ploughed through a highway guard rail and plunged onto the N4 platinum highway, which is still under construction.

Twenty construction workers were being transported from Pretoria to a building site in Rosslyn when the driver lost control of the truck while swerving to avoid another truck. The truck they were travelling in left the Mabopane Highway and landed on the N4 platinum highway.

According to the , seven workers died at the scene and the injured were rushed to surrounding hospitals. Four more passengers died in hospital.

Samuel Sithole, one of the survivors, said that it was a “miracle anyone survived”.

"We could not see because of the canopy we were sitting under, but we could feel there was nothing beneath us," Sithole said.

Abraham Jiyane suffered spinal and head injures and remembered very little of the accident.

"I felt the truck swerve, heard a bang but I don't know what we hit and then I felt us falling," said he said.

When he regained consciousness he was lying on the road and was being helped by paramedics.

The executive director of Stocks Building, Johan Brink, said the accident was tragic but said that he was sure that the truck had been roadworthy.

"They don't leave our yards without certificates,” he said.

Police spokesperson Inspector Percy Morokane said a culpable homicide docket had been opened and confirmed that the truck had swerved to avoid another truck.