"The Federal Transit Administration (FTA) after receiving comments on two previously published Notices, is revising it Recommended Fire Safety Practices for Transit Bus and Van Materials Selection guidelines. This Notice describes FTA's recommended procedure for testing the ability of foam materials to retain fire retardant chemicals after they have been exposed to water, discusses FTA's position on smoke emission performance criteria for seat cushions, and corrects typographical error. These practices are recommendations rather than requirements and are not binding on FTA's grantees, but do reflect FTA's interest in promoting safety issues."
Federal Transit Administration: http://transit-safety.volpe.dot.gov
Federal Register (October 20, 1993), v.58 no.201