Aggressive driving is a form of automobile

Automobile

An automobile, autocar, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor...

 operation in which an operator will deliberately behave in such a manner as to increase the risk of an automobile accident.

Aggressive driving can lead to serious crimes, such as manslaughter

Manslaughter

Manslaughter is a legal term for the killing of a human being, in a manner considered by law as less culpable than murder. The distinction between murder and manslaughter is said to have first been made by the Ancient Athenian lawmaker Dracon in the 7th century BC.The law generally differentiates...

 or murder

Murder

Murder is the unlawful killing, with malice aforethought, of another human being, and generally this state of mind distinguishes murder from other forms of unlawful homicide...

. An aggressive driver may drive so recklessly as to injure or kill another driver or himself.

The U.S. National Highway Traffic Safety Administration

National Highway Traffic Safety Administration

The National Highway Traffic Safety Administration is an agency of the Executive Branch of the U.S. government, part of the Department of Transportation...

(NHTSA) defines aggressive driving as a progression of unlawful driving actions such as:

• Speeding – exceeding the posted limit or driving too fast for conditions
• Excessive lane changing – changing lanes without reasonable cause
• Improper passing – failing to signal intent, using an emergency lane to pass, or passing on the shoulder, cutting into another car's path
• Tailgating – driving near the back of another's car at too close of a range