Historical
APTA SS-PS-004-99 Rev. 1
Standard for Low-Location Exit Path Marking
This standard contains minimum requirements for an emergency low-location exit path marking system (LLEPM) for new, remanufactured, and existing rail passenger cars using passive (non-electrically illuminated) and/or active (electrically illuminated) means of marking the exit path(s) to safety.
Content Provider
American Public Transportation Association [apta]