4. APTA SS-PS-004-99, Rev. 1 Standard for Low-Location Exit Path ...

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APTA SS-PS-004-99, Rev. 1 Edited 4-1-04 APTA SS-PS-004-99, Rev. 1 Standard for Low-Location Exit Path Marking 1. Overview Historically, passenger rail car accidents and incidents have occurred resulting in fire and/or smoke-filled car/compartment conditions. In the presence of these conditions, the difficulty of evacuating passengers and/or crewmembers may increase substantially. Because smoke generally rises, illumination from conventional emergency lighting fixtures, operating as intended, may be obscured. Additionally, in the event of an accident/incident, failure of the main back-up power system may occur. In these situations, the most viable escape path is most visible at or near the floor. This standard requires that each rail passenger car shall have a low-location emergency exit path marking system, visible in the area from the floor to a plane 4 feet (1.22 m) above the aisle of the rail car. This low-location exit path marking system (LLEPM), located in the relatively clear air near the rail car floor, shall enable passengers and crewmembers to visually identify the path to exit the rail car in an emergency. If an alternate means of achieving compliance with this standard are sought to be employed, a hearing must be requested from an equivalency review committee (ERC) and the alternative method must be documented, demonstrated and determined to be sufficient to meet the equivalency criteria established by the ERC. 1.1 Scope This standard shall apply to all new and remanufactured passenger and crew carrying equipment placed in service after January 1, 2000. All existing equipment must be in compliance with this standard by January 1, 2006. Cars in procurement as of the effective date of this standard shall be considered existing equipment. EXCEPTION--Equipment that fails to meet minimum emergency lighting levels established in APTA SS-E-013-99, Standard for the General Emergency Lighting System Design for Passenger Cars 2 , shall be in compliance by July 1, 2002. 1.2 Purpose This standard establishes requirements for LLEPM which will provide visual guidance for emergency rail car evacuation when smoke conditions obscure overhead emergency lighting or when failure of the emergency lighting system has occurred. 2 For references in Italics, see Section 2. 4.5 Volume VI - Passenger System
2. References 4.6 APTA SS-PS-004-99, Rev. 1 Edited 4-1-04 This standard shall be used in conjunction with the following publications. When the following publications are superceded by an approved revision the revision shall apply. APTA SS-C&S-012-02, Standard for Passenger Car Door Systems for New and Rebuilt Passenger Cars. APTA SS-E-013-99, Standard for Emergency Lighting System Design for Passenger Cars. APTA SS-I&M-005-98, Rev. 2, Passenger Compartment Periodic Inspection and Maintenance. APTA SS-I&M-008-98, Rev. 1, Electrical Periodic Inspection and Maintenance. APTA SS-PS-002-98, Rev. 2, Standard for Emergency Signage for Egress/Access of Passenger Rail Equipment. ASTM E 2073-02, Standard Test Method for Photopic Luminance of Photoluminescent (Phosphorescent) Markings. 49 CFR, Part 223, Glazing. 49 CFR, Part 238, Passenger Equipment Safety Standards. 49 CFR, Part 239, Passenger Equipment Train Emergency Preparedness 3. Definitions, abbreviations, and acronyms 3.1 Definitions For the purposes of this standard, the following terms and definitions apply: 3.1.1 active illumination: Illumination, which is generated by electrical energy. 3.1.2 aisle: A path through a vehicle that is not bordered by walls, such as the path through the center of a coach car with rows of seats on each side. 3.1.3 candela: unit of luminous intensity in both SI and English measurement systems. One candela is one lumen per steradian (lm/sr). It is almost exactly equal to the obsolete unit called the candle. 3.1.4 electroluminescent (EL): Luminescence resulting from the application of an alternating electrical current to phosphor. 3.1.5 equivalency review committee (ERC): An adjudicatory committee comprised of representatives from APTA and appropriate industry subject matter experts to evaluate Volume VI - Passenger System
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4. APTA SS-PS-004-99, Rev. 1 Standard for Low-Location Exit Path ...

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