Rogel Lazaro Aguilera-Mederos, 23, has been charged following the crash of his truck on 25 April, which piled into 28 vehicles close to Denver, US.
The 40 counts against him include four counts of Vehicular Homicide – Reckless; six of First Degree Assault; and 24 of Attempted First Degree Assault. Four people died.
First Judicial District Attorney Peter Weir said Aguilera-Mederos will be prosecuted under an “extreme indifference theory”, meaning Aguilera-Mederos was so reckless that he showed no regard for human life.
Aguilera-Mederos, from Texas, faces decades in prison, even though he was not drunk or drugged nor intentionally caused the crash. The brakes failed on his truck, he claims, and it was destroyed in the subsequent fire so it cannot be examined by forensic experts.
Under Colorado law, prosecutors only have to prove that he acted recklessly.