The expressway is the first of its kind in Cambodia, connecting Phnom Penh, the capital of Cambodia, and Sihanoukville, the largest port city in Cambodia, with a total length of about 187.05 kilometers. There are 8 toll stations, 3 service areas and 1 parking area along the line. After its opening to traffic, the driving time from Phnom Penh to Sihanoukville is shortened from more than 5 hours to less than 2 hours, which will greatly reduce the logistics cost, facilitate the local people's travel and boost the economic development of Cambodia.

Before completion of the expressway, Cambodian Prime Minister Samdech Hun Sen posted a video on Facebook to promote Phnom Penh-Sihanoukville Expressway, which attracted netizens' great attention. People left many comments on Facebook, "(Phnom Penh-Sihanoukville Expressway) has a wide road and beautiful scenery." "It is an unprecedented road that can promote people's livelihood and overall development of Cambodia." "I used to see such a road only in foreign countries, but now this achievement has happened in our land. Thanks to the Chinese company for building the first highway for Cambodia!"

During the 3-year construction, the project team scientifically formulated the implementation plan and promoted the construction under the premise of construction safety and quality with zero accident.

The CCCC team introduced new technologies and techniques adapted to the local environment and adopted advanced information management techniques to create a green, environmentally-friendly and intelligent road by scientific and intelligent methods.

The application of SBS modified asphalt for the time in Cambodia extended the life of the road and achieved energy saving and emission reduction. The project implemented various environmental protection measures at the construction site with high standards, and set up animal crossings and anti-collision barriers along the section in a national park, making the expressway a green development road featuring harmony between man and nature.

The project insisted on the concept of "it is better to teach people how to fish than just give them fish.", vigorously promoted local employment, which has offered 11,000 jobs to local people and cultivated a group of professionals for Cambodia's infrastructure industry.