The IFEG have been developed for use in the fire engineering design and approval of buildings and can definitely be applied to any assessment considering the use of The Accessible Exit Sign Project style signage. The ‘Scope’ section of the IFEG adds:
………the concepts and principles may also be of assistance in the fire engineering design and approval of other structures such as ships and tunnels which comprise of enclosed spaces.
This document provides guidance to the fire engineering fraternity in their work to design fire safety systems to achieve acceptable levels of safety. The Guidelines presuppose that the fire engineer has a level of competence and experience that would enable accreditation by an appropriate body.
In particular, the Guidelines provide guidance for the design of Alternative Solutions for the Building Code of Australia (BCA).
Fire engineers need to interpret the guidance given in these Guidelines with flexibility and use it as a tool for responsible fire engineering.
 International Fire Engineering Guidelines, p.0.1-3