Speed limit enforcement is the effort made by appropriately empowered authorities to improve driver compliance with speed limits. Methods used include roadside speed traps set up and operated by the police and automated roadside ‘speed camera’ systems, which may incorporate the use of an automatic number plate recognition system. Traditionally, police officers used stopwatches to measure the time taken for a vehicle to cover a known distance. More recently, radar guns and automated in-vehicle systems have come into use. Speed fines are normally used to enforce speed limits
The perception that speed limits in a given location are being set and enforced primarily to collect revenue rather than improve traffic safety has led to controversy.
Online payment of speed fines is very efficient and much easier to administrate than manual payments.