Abstract
In recent years, researchers have been working on the design of navigational aids and route guidance systems. Existing systems provide information of different types and present it in a variety of ways. Information is sometimes given as text (either written or orally by speech synthesis). Exclusively visual systems may include symbols, or even better represent landmarks with simplified icons. As yet no systems provide a representation which is analogous to the road scene. In order to assist drivers on their journey we have developed pictural information which contains photographs of landmarks with arrows showing which direction to take (pictural system). From the literature on cognitive psychology and the disciplines that relate to spatial cognition, we already know the representational importance of landmarks for persons who are unfamiliar with a location. We therefore conducted experiments to compare the effects of two types of spatial information, pictural and symbolic (just with arrows), which is communicated to individuals in the real driving situation on an unfamiliar journey. This exploratory study has provided us with some insights into the limits and constraints that apply to the use of photographs as a source of route guidance information for drivers.
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