Holiday prompts traffic boom

China's traffic authority said on Thursday more vehicles than usual are expected to be on the highways over the extended break because of the country's toll-free holiday policy.

The authority said road safety remains the top concern during the upcoming annual travel boom.

A total of 660 million passengers will travel by road and water during the longer-than-usual eight-day Golden Week holiday, which combines the National Day holidays and Mid-Autumn Festival and starts on Sept 30.