Four people traveling in a single car lost their lives when a trailer collided with vehicles at a toll road payment booth near Jalostotitlán on the autopista between Guadalajara and Lagos de Moreno.
The driver, whose brakes may have failed, was unable to prevent his trailer from hurtling into a compact car stopped at the payment booth.
The force of the impact crushed the car completely. The high speed at which the trailer was moving meant it continued on its deadly trajectory, careening into six more vehicles and leaving another eight people with injuries.
Officers from the Guadalajara Civil Protection and Firefighters unit, from Guadalajara, as well as local emergency corporations and paramedics from the Red Cross, attended the injured.