‘BACK UP’: Authorities desperately shout at driver headed straight for hazard

Footage shows a worker in a neon vest frantically waving at the approaching truck as several voices scream for the driver to stop.

Footage shows a worker in a neon vest frantically waving at the approaching truck as several voices scream for the driver to stop. Just ahead, the bridge over the Piedra River is completely gone after heavy rainfall triggered flooding across the region.