A highway patroller is a law enforcement officer who is responsible for patrolling highways and enforcing traffic laws. The two most common terms used to describe this job are 'TROOPER' and 'speedcop'. A TROOPER is a police officer who is assigned to patrol highways, while a speedcop is an officer who specializes in enforcing speed limits. Both troopers and speedcops are important members of the law enforcement community, as they help to ensure the safety of drivers on the roads.