Hanzhong implements motor vehicle restrictions to ease urban traffic pressure, balance urban traffic flow and reduce automobile exhaust emissions. According to the Administrative Measures for the Restriction of Motor Vehicles in Heavy Pollution Weather in the Central Area of Hanzhong issued by the Hanzhong Municipal People's Government on June 8, 2023, motor vehicles with tail numbers 1, 3, 5, 7 and 9 are restricted on a single day, and motor vehicles with tail numbers 0, 2, 4, 6 and 8 are restricted every two days.