Overview
Overview,
Introduction, and Getting Started Printable Version
This case study is about a
Traffic Impact Assessment for a proposed site development in Clifton Park,
New York (see Exhibit
2-1). The large parcel of land in question is south of where Maxwell Drive
intersects with Clifton Park Boulevard (State Route 146). Like most impact
assessments, the main question is this: in the horizon year for the
analysis, what geometric improvements will be required to mitigate the
impacts of the site development in conjunction with normal traffic growth?
The Town of Clifton Park and New York
State Department of Transportation (NYSDOT) both have roles to play in the
decision-making. So do Saratoga County, the town’s citizens, the
nearby land owners, and the developer. There are issues about how many
intersections should be studied, what time periods should be examined,
what goals and objectives should be used, and what performance measures
should be employed.
To address these issues and others, the
case study includes six problems. They range in scope from a single
intersection to a sub-area network. Each one illustrates some aspect of the
impact assessment. Each one also illustrates how various traffic analysis
tools in the
Highway Capacity Manual can be applied to
assist traffic analysts, engineers, planners, and decision-makers in making
sound investment decisions regarding changes to a transportation system.
The problems focus on the chapters of the
HCM that deal with interrupted flow facilities, especially signalized
intersections, arterials, freeway interchanges, and arterial weaving. After studying this material, you should be able to:
