Additional Investigations on Driver Information Overload Documentation

摘要

The Objectives of the project were to develop a model of driver information load for freeway applications and translate that model into a practical tool so traffic and safety professionals could analyze driver information load. The specific focus on freeway signing applications provided a reasonable scope for the effort because this was felt to be the primary locus of current traffic engineering concern. Ultimately, it would be useful to broaden the scope of guidance to include other types of roadways (e.g., arterials) and other modes of communications (e.g., intelligent transportation systems, highway advisory radio). The goal of developing guidelines for the range of freeway applications was itself an ambitious target of real practical significance. The project incorporated a number of intermediate goals, which included identifying driver information processing needs and problems related to freeway guide signing; understanding current traffic engineering concerns and practice related to information overload; incorporating driver and roadway factors into a useful conceptual model driver information load; refining the model through research experiments; and developing a practical tool for traffic and safety professionals based on the model.