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 "description": "This data captures mile marker signs on highways in the Baltimore area. The 2012 Mile Marker point file was created with the process of dynamic segmentation, using SHA's Routes and HPMS linear event table that contain ROUTEID, ID_MP mile point field and MP_LOCATION_TYPE = 8 .MP_LOCATION_TYPE value 8 = MILE MARKER",
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 "copyrightText": "State Highway Administration (SHA)",
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   "alias": "MileMarker",
   "domain": null
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   "description": ""
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