police officers have the authority to stop drivers but it is only the police officers within the Swedish Traffic Police division who have the authority to clamp vehicles etc. Taiwan In Taiwan, traffic policing on highways is the responsibility of the National Police Agency. Tunisia In Tunisia, traffic policing on highways is the responsibility of Tunisian National Guard, the country's national gendarmerie force. Turkey In Turkey, traffic policing and highway traffic policing are an extra unit at General Directorate of Security. Traffic Police officers in Turkey, controls seat belts, plates, driving licences and alcohols etc. Highway Traffic Police in Turkey works in Highways like the other countries. In Turkey, every police car has a tablet and a GPS device. United Kingdom In the United Kingdom, traffic policing on highways is the responsibility of the Roads Policing Unit of the territorial police force. In some cases, police forces combine their roads policing units, for example the Central Motorway Police Group and North West Motorway Police Group. United States Many state police agencies in the United States take the name of "highway patrol" rather than "state police". State police agencies may fulfil the role of highway patrol, and vice versa. For instance, the Arizona Highway Patrol is actually a state police agency, meaning that it is a police body having statewide authority to conduct law enforcement activities and criminal investigations. In addition to its highway patrol duties, it performs functions outside the normal purview of the city police or the county sheriff, such as enforcing traffic laws on state highways and interstate expressways, overseeing the security of the state capitol complex and other state buildings, protecting the governor, providing technological and scientific support services, and helping to coordinate multi-jurisdictional task force activity in serious or complex cases. The California Highway Patrol serves as bailiffs and courtroom deputies for certain state courts, such as the appellate courts and the California Supreme Court building in San Francisco. The state traffic enforcement agency retained the name "California Highway Patrol" after the merger of the smaller California State Police with the larger and better-known CHP and the combination of their functions into one agency. On Long Island, New York, along with neighboring New York City, an unusual arrangement exists in which the city and county highway patrols conduct everyday enforcement on the limited-use highways, with the New York State Police acting in a support role on