TRB’s Transit Cooperative Research Program (TCRP) Legal Research Digest 29: First Amendment Implications for Transit Facilities: Speech, Advertising, and Loitering provides an analytical legal synthesis of available regulations, statutes, policies, and case decisions pertaining to permissible and impermissible restrictions on speech and expressive behavior at transit facilities and aboard transit vehicles; a clear discussion pertaining to sidewalks and transit facilities as public fora; attempts to regulate advertising on public property; and a discussion of the enforcement of anti-loitering and anti-panhandling regulations on or near transit facilities.  View Report