IMPROVED AIRPORT GUIDANCE SIGNS.
Abstract
Factors affecting the acquisition and legibility of Airport Guidance Signs were studied to determine the optimum relationship between size, height and location of the signs. The studies showed the 500-foot minimum legibility requirement to be the predominant factor in size determination with a black letter on an illuminated field to be preferable from an acquisition viewpoint. A character size of 10 inches high by 8 inches wide was chosen as satisfactory for a distance of 500 feet. Using these results, two basic types of frangible signs were developed. The first consists of an air supported plastic bag with an eighteen by-forty-eight-inch translucent illuminated field on either side of the sign. The second type uses styrofoam in place of air for the support of a similar plastic bag. Because of the light transmission and outdoor weathering requirement, a Tedlar film was chosen for the plastic on both types. A number of prototypes of each design were built and tested to demonstrate the ability of the signs to withstand a 60 MPH air load while collapsing readily when hit by an airplane section. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 13, 1964
- Accession Number
- AD0618298