Visibility and legibility of exit signs part II: Experimental results

Part I₁ presented an analytical assessment of the factors involved in visibility and legibility of exit signs in commerial buildings. As noted in that article, the available literature on this important topic is surprisingly sparse, there are a number of conflicts in existing standards, and it appears that many of the required illumination levels are unnecessarily high. This suggests the possibility of significant energy savings if more meaningful specification requirements for exit signs can be established and justified. This paper presents experimental verification of the analytical results.