What road sections are there in Xi 'an's vehicle restriction regulations?
Supplementary explanation:
1. Highway sections refer to high-speed, first-class, second-class, third-class and fourth-class highways invested and financed by the government and built and maintained by local enterprises. Country dirt roads are unrestricted.
2. Vehicles passing through Xi 'an on the expressway without getting off the expressway are not restricted.
3. The prohibition of motor vehicles in 3.Xi 'an means that all high-emission vehicles, such as yellow-label vehicles, unlicensed vehicles, three-wheeled vehicles, construction waste and muck transport vehicles, gravel transport vehicles, heavy and medium-sized trucks and concrete tankers, are prohibited from passing within the Third Ring Road (including the Third Ring Road), regardless of the tail number.