truck ablaze

On my frequent visits to Macaé, I see a lot of accidents on the road between Rio de Janeiro and Macaé. This time it was a truck with trailer stowed with empty gas cylinders (LPG). Most probably the brakes of the trailer got overheated and set the trailer in flames. The road was blocked for the fire brigade and ambulance to get near the truck.
It took about 15 minutes before the firefighters started to extinguish the blaze.
Some cylinders exploded because of the intense heat.