The book uses examples from several countries to provide an insight into techniques for data collection and its role in analysis and application of the information in the assessment of traffic systems and their interaction with lane use activities. Traffic flow theories are examined, ranging from basic relationships to those of interrupted flow and area-wide traffic flow, considering isolated links, the performance of junctions and complete networks. The principles of good survey planning and management are described, emphasising that data collection should only take place after careful analysis of the problem to be investigated, the definition of specific needs and the determination of resources available. Analytical techniques are developed for transforming raw data into useful information. A variety of methods for observing and estimating traffic parameters such as flows, speeds, queue lengths, parking needs and demand patterns are described in detail. Separate chapters deal with data presentation techniques and descriptive statistics; statistical analysis techniques and the development of basic models of the traffic system.
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