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NFPA 502: Standard for Road Tunnels, Bridges, and Other Limited Access Highways
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What is NFPA 502?
NFPA 502: Document Scope

1.1 Scope. 1.1.1 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. 1.1.2 This standard establishes minimum requirements for each of the identified facilities. 1.1.3 This standard does not apply to the following structures: (1) Parking garages (2) Bus terminals (3) Truck terminals (4) Any other structure in which motor vehicles are stored, repaired, maintained, or parked 1.1.4 This standard shall be applicable where a structure or an element of a structure, including those specified in 1.1.3(1) through 1.1.3(4), is deemed to be a facility by the authority having jurisdiction. 1.1.4.1 If any element of a structure cited in 1.1.3 is used to allow only the travel of road vehicles as a means of access to or egress from the structure, then it shall be characterized as a facility and treated as such under this standard.

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.

Official document scope
What does NFPA 502 address?

Guidelines cover construction, operation, maintenance, and fire protection of road tunnels, bridges, and other limited access highways to mitigate hazards, maintain structural integrity, and protect lives. Other topics include standpipe and water supply, control of hazardous materials, emergency ventilation, electrical systems, and emergency response.

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