Evaluation of Clearview Alphabet with Microprismatic Retroreflective Sheetings

摘要

This project was conducted to determine the legibility of Clearview alphabet onfreeway guide signs constructed with microprismatic retroreflective sheeting. The Clearview legibility results were compared dto the legibility of freeway guide signs constructed with the Series E (Modified) alphabet. Also included in the analysis were legibility distances of freeway guide signs constructed with Type III sheeting. A total of 60 subjects divided into three age groups participated in this nighttime study.