This synthesis explores transit-related counterterrorism and anti-crime security measures and practices; examines crime and security incident trends; and highlights other related topics, including major issues and obstacles to security and policing management. The report is an update to TCRP Synthesis of Transit Practice 21: Improving Transit Security, which did not address terrorism.

Identifies and describes specific government assistance opportunities such as loans, grants, counseling, and procurement contracts available under many agencies and programs.