Bureau of Transportation Roads (BTS) FAQ

• What are BTS Roads?
• What are the specifications of BTS Roads?
• What formats are available?
• What is the coverage area?
• Where can more information be found about BTS Roads?

Q. What are BTS Roads?

A. Bureau of Transportation Statistics (BTS) Roads is an overview of the road networks for all fifty States, the District of Columbia, and Puerto Rico. The dataset is the transportation layer for The National Map. The data should be displayed and analyzed at scales appropriate for 1:100,000-scale data. The data was original published in 2002.This information was obtained primarily from the Department of Transportation, Bureau of Transportation Statistics website. The county boundaries and FIPS codes for each area are based on 1990 TIGER boundary files from the U.S. Census Bureau. For this data set, the term "county" refers to Boroughs and Census Areas.

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Q. What are the specifications of BTS Roads?

A.

Product	Projection	Horizontal Datum	Vertical Datum
Bureau Of Transportation Statistics (BTS) Roads	Geographic	NAD83	NAVD88

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Q. What formats are available?

A. The only format available for BTS Roads is Shapefile. Shapefile is format for storing the location, shape, and attribute information of geographic features. Technical information about shapefiles can be found at: http://www.esri.com/library/whitepapers/pdfs/shapefile.pdf

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Q. What is the coverage area?

A. Coverage is of the conterminous US.

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Q. Where can more information be found about BTS Roads?

A. The source of the BTS Roads is from the Bureau of Transportation Statistics. The website is: http://www.bts.gov/programs/geographic_information_services/

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