Phnom Penh-Sihanoukville Expressway Opens for use, boosting tourism and real estate of Sihanoukville and Koh Rong, Cambodia The Phnom Penh-Sihanoukville Expressway, a 187-kilometer-long highway connecting Cambodia's capital city, Phnom Penh, and the deep-sea port province of Preah Sihanouk, was opened for trial use to the public on October 1, 2022. It is fully functional and operating at full capacity...