Abstract
This study examined three common strategies for the formation of dot matrix characters, with reference to the task of distance viewing. Also examined was the variable of matrix size (4 x 7 and 5 x 7 characters). All letters and numbers in the fonts were evaluated in the laboratory using a modified threshold visibility task to simulate the distance viewing task. The laboratory results found the best font to be the rounded 5 x 7. Also, a composite font made up of the superior characters from all fonts, was developed. The field study examined this composite font and a standard font used for highway changeable message signs. The results indicate that on the average the composite font can be read from 80 to 150 feet farther than the standard. The results are discussed in terms of highway dynamic information systems, and future research is suggested.
Williams, Rodney Don (1980). Font and matrix size for distance viewed dot-matrix displays. Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -639220.