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1. Global Map: Airports of the United States, 2014

2014. National Atlas of the United States. This point shapefile represents airports in the United States, Puerto Rico, and the Virgin Islands. This layer includes 1:1 million scale data from... National Atlas of the United States.

2. Global Map: Railroad Stations of the United States, 2014

2014. National Atlas of the United States. This point shapefile includes Global Map data showing Amtrak intercity railroad terminals in the United States. The data are a modified version of ... National Atlas of the United States.

3. Ports of the United States, 2014

2014. National Atlas of the United States. This map layer shows major ports in the United States, Puerto Rico, and the U.S. Virgin Islands. A port is a city, town, or urban area with a harbo... National Atlas of the United States.

4. Railroad Grade Crossings: United States, 2014

2014. This point shapefile depicts grade crossings and originates from the National Highway-Rail Crossing Inventory Program. A crossing is defined as tho... United States. Bureau of Transportation Statistics.

5. Railway Nodes: United States, 2014

2014. United States. Bureau of Transportation Statistics and Hunt, Raquel. The Rail Network is a comprehensive database of the nation's railway system at 1:24,000 to 1:100,000 scale. This point shapefile covers all 50 Stat... United States. Bureau of Transportation Statistics.

6. Travel Monitoring Stations: United States, 2014

2014. United States. Bureau of Transportation Statistics and Jessberger, Steven. This point shapefile contains the locations of travel monitoring station sin the United States. The attributes for these databases have been intent... United States. Bureau of Transportation Statistics.