Automobile and truck accidents take the lives of over 40,000 persons each year and leaving many more tens of thousands of persons seriously injured and contemplating a lifetime of pain and disability. Accidents caused by inattentive drivers on their cell phones is on the rise. Tractor trailer trucks which are improperly maintained, speeding or overloaded often have catastrophic consequences to those involved in collisions with them. There are sophisticated methods of accident reconstruction employed by engineers that often are necessary to bring a vehicle collision to a successful resolution.