page_title: Sihanoukville (city)
section_title: Roads and streets
hierarchical_section_title: Sihanoukville (city) / Transport / Roads and streets
caption_attribution_description: English: image of a mile stone near Sihanoukville, October 2014
context_page_description: Sihanoukville, also known as Kampong Som, is a coastal city in Cambodia and the capital of Sihanoukville Province, at the tip of an elevated peninsula in the country's south-west on the Gulf of Thailand. The city is flanked by an almost uninterrupted string of beaches along its entire coastline and coastal marshlands bordering the Ream National Park in the east. The city has one navigable river, the mangrove lined Ou Trojak Jet running from Otres Pagoda to the sea at Otres. A number of thinly inhabited islands – under Sihanoukville's administration – are near the city, where in recent years moderate development has helped to attract a sizable portion of Asia's individual travelers, students, and backpackers.
  The city, which was named in honour of former king Norodom Sihanouk, had a population of around 89,800 people and approximately 66,700 in its urban center in 2008. Sihanoukville city encompasses the greater part of six communes of Preah Sihanoukville Province. A relatively young city, it has evolved in parallel with the construction of the Sihanoukville Autonomous Port, which commenced in June 1955, as the country's gateway to direct and unrestricted international sea trade.
context_section_description: National Highway 4 (NH4): Phnom Penh and Sihanoukville are connected via National Road 4. The road was built and financed by the United States to accommodate heavy freight containers and gasoline tank trucks connecting the deep-water port with Phnom Penh. There were three toll stations along its length of around 250 km (155 mi). However, it is considered the most dangerous road of Cambodia. Residential areas and the attached local traffic merges with the speeding traffic. Traffic accidents result.
  National Highway 3: Connects Sihanoukville with Kampot Province. The road joins NR4 at Prey Nob District at the junction town of Veal Rinh. It is sealed, but lacks traffic signs. Free roaming cattle and other livestock regularly block road traffic. The road underwent significant refurbishment in 2008 and forms part of an international "north-south economic corridor" from Kunming in China to Bangkok in Thailand.
  National Highway 48: Connects Sihanoukville and Phnom Penh with Koh Kong Province to the southwest. The road ends at the Thai-Cambodian border.
caption: Mile stone of National Highway 4 near Ream commune
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