Cambodia

The nation's extensive inland waterways were important historically in international trade. The Mekong and the Tonle Sap River, their numerous tributaries, and the Tonle Sap provided avenues of considerable length, including 3,700 kilometers (2,300 mi) navigable all year by craft drawing 0.6 meters (2 ft) and another 282 kilometers (175 mi) navigable to craft drawing 1.8 meters (6 ft).

National Highway 4 Cambodia has two major ports, Phnom Penh and Sihanoukville, and five minor ones. Phnom Penh, located at the junction of the Bassac, the Mekong, and the Tonle Sap rivers, is the only river port capable of receiving 8,000-ton ships during the wet season and 5,000-ton ships during the dry season.

With increasing economic activity has come an increase in automobile and motorcycle use, though bicycles still predominate; as often in developing countries, an associated rise in traffic deaths and injuries is occurring Cycle rickshaws are an additional option often used by visitors.

The country has four commercial airports. Phnom Penh International Airport (Pochentong) in Phnom Penh is the second largest in Cambodia. Siem Reap-Angkor International Airport is the largest and serves the most international flights in and out of Cambodia. The other airports are in Sihanoukville and Battambang.