The U.S. Department of Transportation (DOT) assists individuals with disabilities by enforcing accessibility regulations for air travel and public transportation. It mandates ramps, lifts, designated seating, and visual/auditory information in public transit. The DOT offers advice on requesting accommodations, receiving airport assistance, and filing accessibility complaints. It also provides financial aid for infrastructure improvements, such as accessible pedestrian signals and sidewalks, and educates transportation providers and the public about the importance of accessibility.