Air freight is the volume of freight, express, and diplomatic bags carried on each flight stage (operation of an aircraft from takeoff to its next landing), measured in metric tons times kilometers traveled.
Port container traffic measures the flow of containers from land to sea transport modes., and vice versa, in twenty-foot equivalent units (TEUs), a standard-size container. Data refer to coastal shipping as well as international journeys. Transshipment traffic is counted as two lifts at the intermediate port (once to off-load and again as an outbound lift) and includes empty units.
About a quarter of the world drives on the left, and the countries that do are mostly old Britishcolonies. The following is a list of countries of the world and the side of the road the inhabitants drive on. Most of the people driving on the left side of the road use right-hand-drive vehicles and vice-versa.
nomadic groups on border region with Yemen resist demarcation of boundary; Yemen protests Saudi erection of a concrete-filled pipe as a security barrier in 2004 to stem illegal cross-border activities in sections of the boundary; Kuwait and Saudi Arabia continue discussions on a maritime boundary with Iran; because the treaties have not been made public, the exact alignment of the boundary with the UAE is still unknown and labeled approximate
Lists border, territory and resource disputes by country.
Ad Dammam, Al Jubayl, Duba, Jiddah, Jizan, Rabigh, Ra's al Khafji, Mishab, Ras Tanura, Yanbu' al Bahr, Madinat Yanbu' al Sinaiyah
The major ports and harbors selected on the basis of overall importance to each country. This is determined by evaluating a number of factors (e.g., dollar value of goods handled, gross tonnage, facilities, and military significance).
Travel services (% of commercial service exports) covers goods and services acquired from an economy by travelers in that economy for their own use during visits of less than one year for business or personal purposes. Travel services include the goods and services consumed by travelers, such as lodging and meals and transport (within the economy visited).
Vehicles per populated land area Units: Vehicles/Populated LandArea (in km2) Units: Air pollution is generally greatest in densely populated areas. To take this into account, we used the Gridded Population of the World dataset available from CIESIN and calculated the total land area in each country inhabited with a population density of greater than 5 persons per sq. km. We then utilized this land area as the denominator for the vehicles data.
World Bank, World Development Indicators 2001, Washington, DC: World Bank, 2001