Primary_Signed_Routes
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https://celebratingcities.data.socrata.com/d/qasr-aj56
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资源简介：
Primary Signed Route locations. The dataset contains locations and attributes of Primary Signed Routes, created as part of the District of Columbia, Department of Transportation (DDOT) Street Spatial Database (SSD). A database provided by the District of Columbia, Department of Transportation identified StreetSegment locations.
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celebratingcities.data.socrata.com
