shipments. Transportation is the largest source of greenhouse gas emissions in the United States. The overwhelming majority of roads in the United States are...

Rail transportation in the United States consists primarily of freight shipments along a well integrated network of standard gauge private freight railroads...

The United States secretary of transportation is the head of the United States Department of Transportation. The secretary serves as the principal advisor...

The United States Department of Transportation (USDOT or DOT) is one of the executive departments of the U.S. federal government. It is headed by the...

The United States is serviced by a wide array of public transportation, including various forms of bus, rail, ferry, and sometimes, airline services. Most...

Transportation safety in the United States encompasses safety of transportation in the United States, including automobile crashes, airplane crashes, rail...

Transportation in the United States is governed by laws and regulations of the federal government. The Department of Transportation is responsible for...

The United States Virgin Islands (USVI) is the only place under United States jurisdiction where the rule of the road is to drive on the left. However...

The United States Transportation Command (USTRANSCOM) is one of the eleven unified commands of the United States Department of Defense. In both times of...

large role in the development of the United States from the industrial revolution in the Northeast (1820s–1850s) to the settlement of the West (1850s–1890s)...

means of military transportation. The US Army centralized the management of rail into the United States Military Railroad (USMRR). The Army Quartermaster...

The United States government has maintained a variety of vehicles for the president. Because of the president's role as commander-in-chief, military transports...

The United States has an extensive air transportation network. In 2013, there were 86 airports in the U.S. that annually handled over 1,000,000 passengers...

In the United States, speed limits are set by each state or territory. States have also allowed counties and municipalities to enact typically lower limits...

The U.S. House Committee on Transportation and Infrastructure is a standing committee of the United States House of Representatives. The Committee on Transportation...

In the United States, driver's licenses are issued by each individual state, territory, and the District of Columbia rather than by the federal government...

An employer in the United States may provide transportation benefits to their employees that are tax free up to a certain limit. Under the U.S. Internal...

The United States federal excise tax on gasoline is 18.4 cents per gallon and 24.4 cents per gallon for diesel fuel. Proceeds from the tax partly support...

The United States Senate Committee on Commerce, Science, and Transportation is a standing committee of the United States Senate. Besides having broad jurisdiction...

The Transportation Security Administration (TSA) is an agency of the United States Department of Homeland Security (DHS) that has authority over the security...

The United States of America is a federal republic consisting of 50 states, a federal district (Washington, D.C., the capital city of the United States)...

in shaping the economic, social, and geographic landscape of the United States, laying the foundation for much of the nation's modern transportation infrastructure...

These are lists of the busiest airports in the United States, based on various ranking criteria. The FAA uses passenger boarding for a half calendar year...

The deputy secretary of transportation advises and assists the secretary of transportation in the supervision and direction of the Department of Transportation...

86 percent of people in the United States use private automobiles as their primary form of transportation to their workplace. Each state has the authority to...

department of transportation (DOT or DoT) is a government agency responsible for managing transportation. The term is primarily used in the United States to describe...

The Surface Transportation Board (STB) of the United States is an independent federal agency that serves as an adjudicatory board. The board was created...

Plans for high-speed rail in the United States date back to the High-Speed Ground Transportation Act of 1965. Various state and federal proposals have...

In the United States, time is divided into nine standard time zones covering the states, territories and other US possessions, with most of the country...

with the protection of life through regulation, management and technology development of all forms of rail transportation. In the United States there...