Sixty percent of the transit-industry practitioners surveyed rate their transit agency’s efforts to address their major security challenges as somewhat or very successful. However, only 25 percent say they have implemented any security-risk-reduction program that they consider to be exceptional or exemplary.

The TRB Transit Cooperative Research Program's TCRP Synthesis 146: Transit Security Preparedness identifies current practices transit systems can use to enhance their security measures and to identify opportunities to apply security technology applications used in other industries to the transit environment.

One size does not fit all in the context of transit security. However, there are common themes in all effective security preparedness approaches.