The NHTSA, after talking with law enforcement officials and court officials, defines aggressive driving as occurring when "an individual commits a combination of moving traffic offenses so as to endanger other persons or property."
Aggressive drivers are usually late, tired, stuck in traffic and/or trying to win a personal race to somewhere. Every year the number of cars on the road grows larger, and the number of tailgaters and lane blockers increases. If you get behind the wheel thinking an aggressive attitude keeps you in control, think again. Those aggressive moves you're making can quickly and easily lead to a collision. You may rightly blame the situation on another driver for tailgating or cutting you off, but honking and other retaliatory actions can turn YOU into an aggressive driver.