Following the accident, Cisternas Reunidas accepted responsibility for the disaster, but denied any order or prohibition to the drivers to use the motorway instead of the national road, claiming that it is the driver who chooses which road to take.
The tank container was manufactured at 13 December 1973 by a workshop from Bilbao,[REF] and at that time it did not meet the requirements for carrying flammable liquids, since it lacked emergency pressure release valves.