Regarding whether blue license plate trucks can enter urban areas, the regulations vary by city. There is no nationwide unified rule, as each city formulates its own traffic restriction measures. In some cities, blue license plate vehicles without a permit are not allowed to enter urban areas at all; in others, non-local blue license plate vehicles are permitted. Military vehicles, police cars, fire trucks, school buses, ambulances, engineering rescue vehicles, and specialized road clearance and accident rescue vehicles from the traffic police department are exempt from restrictions. Additional information: 1. In some cities, local blue license plate vehicles require a permit, while non-local ones are prohibited from entering urban areas; in others, local blue license plate vehicles can enter freely, but non-local ones are barred; and in some cities, there are no restrictions on blue license plate vehicles. 2. Generally, the total mass of blue license plate trucks on the vehicle registration is below 4.5 tons. Here, ordinary trucks under 4.5 tons usually refer to blue license plate trucks with a length of less than 6 meters. These small blue license plate trucks have low requirements for driver's licenses, and drivers with a C1 license can operate them. Therefore, a freight qualification certificate is no longer required to drive such small blue license plate trucks.
