A traffic study is the collection and analysis of measurable factual data relating to traffic and its characteristics.
Traffic studies are carried out to:

• Provide a basis for planning and designing traffic facilities, including the selection of geometric standards, economic analysis, and the determination of priorities.
• Assist traffic operation by determining the need for traffic control devices such as signs, traffic control signals, pavement markings, and school and pedestrian crossings.
• Evaluate the effect of changes made for traffic by conducting before and after studies.
• Determine the basic characteristics and the general laws of traffic behavior.