• [+] Transportation in United States insular areas (6 C)

• [+] Transportation in the United States by county (3 C)

#

• [+] Transportation in Puerto Rico (9 C, 4 P)

+

• [+] Transportation in the United States by city (120 C)
• [+] Transportation in the United States by state (56 C)

A

• [+] Aerial tramways in the United States (8 P)
• [+] Aviation in the United States (19 C, 50 P)

B

• [+] Bridges in the United States (14 C, 8 P)

C

• [+] Cycling in the United States (12 C, 29 P)

D

• [+] United States Department of Transportation (4 C, 21 P)
• [+] Transportation disasters in the United States (7 C, 3 P)

E

• [+] Expressway authorities (1 C, 22 P)

F

• [+] Transportation funding in the United States (1 P)
• [+] Future public transportation in the United States (1 C, 166 P)

G

• [+] Gondola lifts in the United States (3 P)

H

• [+] History of transportation in the United States (5 C, 3 P)

I

• [+] Indian Reservation Roads Program (14 P)
• [+] Transportation infrastructure in the United States (18 C)
• [+] Interstate Commerce Commission (1 C, 5 P)

L

• [+] United States transportation law (3 C, 11 P, 2 F)

P

• [+] Port authorities in the United States (3 C, 8 P)
• [+] Public transportation in the United States (6 C, 10 P)

R

• [+] Rail transport in the United States (23 C, 68 P)
• [+] Road transport in the United States (6 P)
• [+] Roads in the United States (26 C, 28 P)

S

• [+] State departments of transportation of the United States (51 P)

T

• [+] Taxicabs of the United States (4 P)
• [+] Transport museums in the United States (56 C)
• [+] Transportation companies of the United States (7 C, 29 P)
• [+] Tunnels in the United States (39 C, 4 P)

V

• [+] Vehicle registration plates of the United States (63 P)

W

• [+] Water transportation in the United States (15 C, 16 P)

*

• Transportation in the United States

5

• 5-1-1

A

• Adopt a Highway
• Airports Council International
• Alcohol-related traffic crashes in the United States
• American Association of Motor Vehicle Administrators
• American Association of State Highway and Transportation Officials
• American Road and Transportation Builders Association

B

• Biodiesel in the United States
• Busette

C

• Car Allowance Rebate System
• Control city
• Controlled Impact Demonstration

D

• Department of Transportation
• Bureau of Transit Statistics
• Driver's license in the United States
• Driver's education
• Driving in the United States

E

• E-ZPass
• Electric vehicles in the United States

F

• Freeway and expressway revolts
• Freeway service patrol

H

• United States House Committee on Transportation and Infrastructure

I

• Institute of Transportation Engineers
• International Municipal Signal Association
• International Registration Plan

K

• Kansas City Scout

L

• List of U.S. cities with high transit ridership
• List of U.S. cities with most households without a car
• List of U.S. cities with most pedestrian commuters
• List of longest consumer road vehicles

M

• Manual on Uniform Traffic Control Devices
• Mass transit in the United States

N

• National Advanced Driving Simulator
• National Committee on Uniform Traffic Control Devices
• National Driver Register

N cont.

• National Infrastructure Reinvestment Bank
• National Surface Transportation Policy and Revenue Study Commission
• National Transportation Research Center

P

• Passenger vehicles in the United States
• Private highways in the United States

R

• Recreational Trails Program

S

• Shared lane marking
• Spur route

T

• Teen escort company
• Transportation Security Administration
• Transportation for America
• Transportation in Appalachia

U

• United States Senate Committee on Commerce, Science and Transportation
• United States Senate Committee on Transportation Routes to the Seaboard
• United We Ride

Z

• Zero Milestone
• Zero mile marker