Geometric design covers the design of the visible elements of the road. This book provides background material for the designer including statistics, traffic flow theory, economic and utility analysis, systems analysis, hydraulics and drainage, capacity analysis, coordinate calculation, environmental issues, and public transport. The book takes a human factors approach to design, drawing on the concept of the "self-explaining road." Changes in geometric design over the last few years have been dramatic and far-reaching and this book draws these together into a practical guide.