TRB’s Transit Cooperative Research Program (TCRP) Synthesis 58: Emergency Response Procedures for Natural Gas Transit Vehicles identifies and documents the state of the practice on emergency response protocols to incidents involving natural gas-filled transit buses.  The report is designed to assist first responders to natural gas incidents—emergency response professionals such as police officers and fire-fighters; transit agency operations and maintenance employees, police, and security guards; and certain members of the general public.  This topic is published at https://www.trb.org/news/blurb_detail.asp?id=4806