Government officials have been testing an emergency response program and have asked for assurances that utilities, transportation and fire control services will operate properly in case of an emergency during the gathering, which runs from Nov. 8 to Nov. 18, China's state-run Xinhua News Agency reported Wednesday.
"Services for every post and every section should be assured so as to ensure a successful congress," said Guo Jinlong, secretary of the CPC Beijing Municipal Committee.
Vehicles carrying toxic or dangerous chemicals won't be allowed in Beijing during the congress. The city's Traffic Management Bureau said the time vehicles registered outside Beijing may stay in the city was shortened from seven days to three.
Police officers also have been stationed at locations such as Tiananmen Square and underground tunnels, Xinhua said.
A man who was asked for his identification and had his backpack searched said he didn't mind the heightened security.
"I don't mind at all and I fully understand their work," he told Xinhua. "After all, they are here for the safety of all."
More than 2,000 delegates are expected to attend the congress, which meets every five years.