NFPA 502: 2011 Standard for Road Tunnels, Bridges, and Other Limited Access Highways

National Fire Protection Association (NFPA). 2011 Edition. It was issued by the Standards Council on August 5, 2010, with an effective date of August 25, 2010, and supersedes all previous editions. This edition of NFPA502 was approved as an American National Standard on August 25, 2010. 57 p. This standard provides fire protection and fire life safety requirements for limited access highways, road tunnels, bridges, elevated highways, depressed highways, and roadways that are located beneath air-right structures.