The legibility of highway guide signs with special reference to cardinal direction indications.

The report is concerned with the legibility of the message elements displayed on the highway guide signs. The work was carried out on a vision testing alley, using scaled down replicas of highway signs. Cardinal Direction indications (North, South, East, West) demonstrated satisfactory legibility. The findings indicate that route numbers had poorest legibility of the eight types of information displayed on the guide signs tested. They were seen at 10 percent shorter distance than place names.