The Hong Kong Police Force has ordered 10 new electric scooters for their officers to help reduce pollution in central Hong Kong. Emergency Unit, Police Tactical Unit, and Traffic Police have identification markings on the back of the car. For example, PTUD 1/3 means PTU D Team 1st Team 3rd car; EUKW 23 means Emergency Unit, Kowloon West region, 23rd car; and TKW 2 means Traffic unit, Kowloon West region, second car. Until 2007, EU, PTU, and TP vehicles had identification markings in a slightly different format. For example, “1/3 PTUD”, “23 EUKW”, and “2 TKW”.