Setting speed limits is a responsibility of the federal government.

State and local taxes are the primary source of funding for state and local transportation projects.

Caltrans is the California Department of Transportation, a state-owned transportation agency.

MTA is the Metropolitan Transportation Authority, a local-owned transportation agency in New York City.

A transportation master plan is a long-range plan that identifies and prioritizes transportation needs, develops a vision for transportation, and coordinates transportation planning among different agencies.

Public participation in transportation planning is important to provide input on transportation plans and projects, hold government agencies accountable for their transportation decisions, and educate the public about transportation issues.

State and local governments face a number of challenges in transportation, including funding shortfalls, aging infrastructure, congestion, and climate change.

State and local governments are using a variety of strategies to address transportation challenges, including investing in public transportation, improving infrastructure, promoting walking and biking, and encouraging carpooling and vanpooling.

Technology can be used to improve traffic flow, reduce congestion, and promote public transportation.

Autonomous vehicles, electric vehicles, and shared mobility are all emerging trends in transportation.

Emerging trends in transportation will require new policies and regulations, create new opportunities for economic development, and change the way people travel.

State and local governments will face a number of challenges as they adapt to emerging trends in transportation, including funding shortfalls, aging infrastructure, and public resistance to change.

State and local governments will have a number of opportunities as they adapt to emerging trends in transportation, including new sources of revenue, improved economic development, and reduced congestion.

State and local governments can play a role in promoting sustainable transportation by investing in public transportation, improving infrastructure for walking and biking, and encouraging carpooling and vanpooling.

Sustainable transportation has a number of benefits, including reduced air pollution, improved public health, and reduced traffic congestion.