The Road Research Laboratory, on of the laboratories of the D.S.I.R., has been investigating traffic and safety aspect of the work has been described in Research on Road Safety published in 1963. The companion volume Research on Road Traffic covers the work which the Laboratory has carried out to discover methods and principles which practising engineers, planners and administrators can use to facilities traffic flow. The subjects covered include practical methods of measuring traffic flow, speeds, and parking densities; prediction of the amount of traffic on a new road; traffic theory; the capacity of road systems including intersections; the area needed for traffic in towns; traffic controls; the economics of road improvements; and some safety aspects of rural roads.
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