BEIJING - China's top work safety supervisor on Sunday ordered cities and provinces along the Beijing-Shanghai high-speed railway to eliminate problems that could endanger traffic security along the line.

The Work Safety Commission of the State Council, or Cabinet, has required local authorities to carry out special campaigns to find out and solve problems, said the State Administration of Work Safety (SAWS) in a statement posted on its website.

The statement said the authorities should adopt long-term mechanisms such as setting up and drawing a map of restricted areas for the line, conducting coordinated security inspections and exchanging information regularly.

During the last 10 days of July, the commission will send two inspection groups, each headed by officials from SAWS and Ministry of Railways, to evaluate the implementation of the campaigns, according to the statement.

The inspection groups will examine roads, bridges and culverts as well as construction and mining sites near the line, said the statement.

The 1,318-km Beijing-Shanghai high-speed railway went into operation on June 30. It winds through seven provinces and municipalities along China's eastern coast. The train trip between the two cities takes less than five hours.