Description: This dataset was created by querying the full roads dataset (RoadsAll_Tiger10_1) for Primary roads (MAF/TIGER Feature Classification Code (MTFCC) = S1100) and Secondary roads (MTFCC = S1200). After selection, it was apparent that some roads were coded incorectly, such that small disconnected road segments appeared within residential and rural areas, These segments were identified by visual on-screen inspection and deleted from the final dataset.The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line File is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. Primary roads are generally divided, limited-access highways within the interstate highway system or under State management, and are distinguished by the presence of interchanges. These highways are accessible by ramps and may include some toll highways. Secondary roads are main arteries, usually in the U.S. Highway, State Highway, and/or County Highway system. These roads have one or more lanes of traffic in each direction, may or may not be divided, and usually have at-grade intersections with many other roads and driveways. They usually have both a local name and a route number.