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Project Profile Details

GIS Services

Transit Dependent Bus Route Development


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Objectives

To develop a robust bus service for those residents of a jurisdiction who do not have access to a private vehicle for evacuation purposes within the Indian Point Energy Center Emergency Planning Zone (EPZ – circle with an approximate 10-mile radius centered at the plant).

The Challenge

With any planning for hazardous situations, the evacuation of the general public away from an incident location requires planning for those without access to private transportation. This group of the population, transit-dependent, may require aid from those local emergency organizations and/or departments closest to them.

Questions must be asked regarding this population to adequately plan for their timely evacuation:

* How many transit-dependent people potentially live within our jurisdiction?

* Where do transit-dependent people live?

* Do we have enough transportation resources to evacuate them?

* Do we have a location to transport transit-dependents to?

KLD's Approach

The project methodology included overlaying the county transportation infrastructure, political boundaries, Census data, reception centers, and the jurisdictional boundaries. Census data was used to determine average household size and transit-dependent population. Using the Environmental Systems Research Institute’s (ESRI) ArcGIS Desktop Suite including the Network Analyst Extension, bus routes were devised along roadways within close proximity to the transit-dependent population. Bus stops were then assigned so that all transit-dependent residents would be within either ½ mile or ¾ mile (depending on the county) walking distance of a route. Buses were assigned to each route based on the estimated ridership at each stop.

Each proposed bus route was driven to observe roadway characteristics (such as lane width, turn radii, weight restrictions and vertical clearance), to ensure the safety of operating buses along it, and also to validate the connectivity of roadways shown in the GIS base maps.

Project Results

The final deliverables for the project were GIS maps and data files of all proposed bus routes and bus stops, turn sheets for each route to help bus drivers navigate the route, and a complete report documenting the methodology and Census data used.

 Key Words: GIS,maps,bus route development,transportation

 

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