Columbia subject headings:
Harvard subject headings:
Commuting--United States--Congresses.
Older people--Transportation--United States--Congresses.
Paratransit services--United States--Congresses.
People with disabilities--Transportation--Germany--Congresses.
Ridesharing--United States--Congresses.
Urban transportation--United States--Congresses
Princeton subject headings:
Commuting--United States--Congresses.
Older people--United States--Transportation--Congresses.
Paratransit services--United States--Congresses.
People with disabilities--Germany (West)--Transportation--Congresses.
Ridesharing--United States--Congresses.
Urban transportation--United States--Congresses.