Widespread changes in highway and street traffic signs and pavement markings during the next few years will affect every American motorist and pedestrian. The United States is moving toward an international-type system of traffic control devices, which emphasizes pictures and symbolic signs rather than written messages. Symbolic signs are not entirely new. The familiar curve and crossroad symbols have been used for many years. Symbols have several advantages over word messages. They provide almost instant communication with the driver, since they can be understood at a glance without having to be read. Also, they overcome language barriers. This is important in view of the growth of international travel. Familiarity with the symbolic signs will help Americans traveling abroad, as well as foreign visitors to the United States. Some of the present word signs will remain in use. These are signs which have proved effective in the past and which contain easily understood messages, such as the "Stop" sign and speed limit signs. (Author/publisher)
Abstract