This document discusses five common types of fatal truck accidents: 1) Head-on collisions which typically occur when a vehicle crosses the median or centerline. 2) Underride crashes where a passenger vehicle collides with the rear of a truck and gets trapped underneath. 3) Override accidents where a truck drives over a passenger vehicle after abruptly changing lanes. 4) Rear-end collisions which can happen if a truck fails to leave enough space or the driver is distracted. 5) Jackknifing where a truck folds into itself from improper braking or equipment failure, potentially striking other vehicles. Victims of serious truck accidents in Dallas are advised to contact an attorney.