A police pursuit is defined as "...an active attempt by a law enforcement officer on duty in a patrol car to apprehend one or more occupants of a moving vehicle, providing the driver of such a vehicle is aware of the attempt and is resisting apprehension by maintaining or increasing his speed or ignoring the law enforcement officer's attempt to stop him," (Nugent, Connors, McEwen and Mayo, 1990:1). However, assumptions that a violator flees from an officer because of a serious criminal act are not necessarily correct (Alpert, 1987).
Police pursuits have left an unacceptable number of property damages as well as personal injury and fatal accidents. In their 1995 study of pursuits in Minnesota, Robert E. Crew, Jr., Lorie A. Fridell and Karen Pursell reported that of the 4,349 police pursuits studied, there was nearly a 44 percent chance of some sort of property damage occurring as a result of the pursuit.
In research involving Metro-Dade Police Department pursuits, it was found that of the 398 police pursuits studied in one year, 132 of those pursuits ended in a collision, which is 33 percent of the total pursuits. Within those 132 collisions, 67 were pursuits that were initiated for nothing more than a traffic violation (Geoffrey P. Alpert, "Questioning Police Pursuits in Urban Areas," Journal of Police Science and Administration, 12/87, page 302).
This study broke down the data from those accidents and who was involved as followed: "...41 pursuits ended with injuries to the defendant or his passenger, seven pursuits ended injuring police officers, and four pursuits ended with injuries to bystanders only. Six pursuits ended with injuries to an officer and a defendant, and the impact of one pursuit injured an officer and a bystander."
According to the study, there were 57 pursuits ending with personal injuries, and four deaths were caused from police pursuits during that year.