There are many causes of semi truck accidents but some of the most common causes are:

• Drug use: The major cause of the truck accidents is drug use. 26% of the truck drivers who are on prescription drugs are the cause of trucking accidents. Most of the drugs induces lethargy and drowsiness and thus cause accidents. 18% of the drivers who take over the counter drugs for pains or normal fever also cause accidents.

• Disobeying the traffic rules: 23% of all the accidents are caused by the negligence and rashness of the truck drivers. Most of them drive faster than the speed limits and lose the control of the truck and cause accident. Illegal maneuver and wrong overtaking also cause severe accidents.

• Fatigue: The truck drivers need to cover many hundred miles at a stretch. Sometimes they don’t get adequate sleep and rest which cause fatigue. The driver may fall asleep at the wheels and cause accidents.

• Unfamiliar roads: About 20% of the accidents occur as the truck drivers don’t have the complete knowledge of the terrain and roads. The unfamiliarity of the roadways prevents them from anticipating the bends and merging traffic and causes accidents.

• Exterior distractions: Some times some exterior distractions like a sudden crossing of the road by elderly or a kid can cause accident. The truck driver may try to save them and hit somewhere else causing accidents. A sudden searing noise can also distract the truck driver.

Many times it has been found that the driver was engrossed on a mobile phone or music and missed some traffic rules and caused accident.