According to the National Highway Traffic Safety Administration, speeding is involved in one third of all fatal auto accidents. There are over 13,000 lives lost due to speeding accidents each year. It takes an economic toll as well: speeding related accidents cost society about $40 billion annually, according to the National Safety Council. While drivers know that speeding is dangerous, it tends to be a habit that drivers have a hard time breaking.
For more information on speeding and its dangers, see the links below.
http://www.nhtsa.gov/Aggressive– NHTDA study on speeding