Module 2 : Traffic Measurement Procedures

Lecture 05 : Measurement at a Point

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	Introduction The data required by a traffic engineer can mainly be observed on field rather than at laboratory. Now the field studies can be classified into three types depending upon the length of observation: Measurement at a point Measurement over a short section Measurement over a long section Out of these we will be discussing the first type here. Flow is the main traffic parameter measured at a point. Flow can be defined as the no of vehicles passing a section per unit time. Traffic volume studies are mainly carried out to obtain factual data concerning the movement of vehicles at selected point on the street or highway system.