Legal basis: People's Republic of China (PRC) Highway Law.
Article 3 Highway development should follow the principles of overall planning, rational layout, quality assurance, unimpeded, environmental protection, construction, renovation and maintenance.
Article 4 People's governments at all levels shall take effective measures to support and promote highway construction. Highway construction should be included in the national economic and social development plan. The state encourages and guides domestic and foreign economic organizations to invest in the construction and operation of highways according to law.