A Guideline for Determining Minimum Threshold Requiring Traffic Impact Studies

by Anthony A. Saka, Rappahannock Area Development, Commission, Fredericksburg, United States,



Document Type: Proceeding Paper

Part of: Site Impact Traffic Assessment: Problems and Solutions

Abstract: Over the years, a number of localities have developed and adopted some form of traffic impact assessment (TIA) guidelines. As part of this study, an informal survey conducted showed that similarities exist among TIA guidelines used by localities in Virginia. A noticeable exception, however, is the minimum threshold requiring the submission of a traffic impact study (TIS). The minimum threshold varies significantly from locality to locality. Experience has shown that the thresholds used by most of the localities are arbitrarily chosen. This paper describes a methodology, based on a first-come-take-all (FCTA) site development policy, that can be used as a guide to determine the minimum threshold that requires the submission of a TIS.

Subject Headings: Traffic analysis | Highway engineering | Traffic surveys | Traffic models | Traffic capacity | Traffic volume | Site investigation | North America | Virginia | United States

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