Recently, Cambodia's Phnom Penh-Sihanoukville Expressway held an online information session for officials and technicians from the Ministry of Public Works and Transport of Cambodia, as well as some Cambodian students of the Institute of Engineering. Let's visit the Phnom Penh-Sihanoukville Expressway and unveil the mystery of Cambodia's first expressway. The project will be commissioned for trial operation in September 2022. The completion of the project will shorten the drive from Phnom Penh to Sihanoukville from 5 hours to less than 2 hours, which will strongly promote the economic growth of Cambodia.