Evaluation of the Effect on Viewer Recognition of Viewing at an Angle a Sign with Arrow Markings

摘要

This paper presents an evaluation of the effect on viewer recognition of viewing at an angle a sign with arrow markings. Focusing on the case in which a sign at an intersection is marked with an arrow pointing in the direction of a given destination, this paper (a) investigates, using linear transformation, how to represent such an arrow in a manner which ensures that drivers follow the proper direction, even when the arrow is viewed from different angles, and (b) proposes a specific approach to representing such an arrow. It has been shown that the direction and magnification of a given arrow marking are important factors in the recognition of the proper direction on the part of observers.