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This data captures mile marker sign locations 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<\/SPAN><\/P><\/DIV><\/DIV>", "hasVersionedData": true, "hasArchivedData": false, "supportsDisconnectedEditing": false, "supportsDatumTransformation": true, "supportsRelationshipsResource": true, "syncEnabled": false, "supportedQueryFormats": "JSON", "maxRecordCount": 1000, "maxRecordCountFactor": 1, "capabilities": "Query", "description": "ArcGIS map document used for creation, configuration, and publishing of Esri REST service layers for the 911 RapidDeploy map.", "copyrightText": "State Highway Administration (SHA)", "spatialReference": { "wkid": 102685, "latestWkid": 2248 }, "initialExtent": { "xmin": 1368033.7563010468, "ymin": 583971.4422084067, "xmax": 1504509.1062555597, "ymax": 627383.763922178, "spatialReference": { "wkid": 102685, "latestWkid": 2248 } }, "fullExtent": { "xmin": 1404382.7499770522, "ymin": 561146.5672629774, "xmax": 1468160.1125795543, "ymax": 624229.6117003113, "spatialReference": { "wkid": 102685, "latestWkid": 2248 } }, "allowGeometryUpdates": true, "allowTrueCurvesUpdates": false, "onlyAllowTrueCurveUpdatesByTrueCurveClients": false, "supportsApplyEditsWithGlobalIds": false, "supportsTrueCurve": true, "units": "esriFeet", "documentInfo": { "Title": "Baltimore City 911 RapidDeploy Service Layer Map", "Author": "", "Comments": "This ArcGIS map document is used for the creation, configuration, and publishing of Esri REST service layers for the 911 RapidDeploy vendor's map application.", "Subject": "ArcGIS map document used for creation, configuration, and publishing of Esri REST service layers for the 911 RapidDeploy map.", "Category": "", "Keywords": "Baltimore City,mile marker,mile markers,highway,REST,CAD,911,SHA,Public Safety & Service Emergency Communications,PSSEC,Baltimore City Office of Information & Technology,BCIT,City of Baltimore,COB" }, "supportsQueryDomains": true, "layers": [ { "id": 0, "name": "AddressDB.EGISDATA.mile_marker", "parentLayerId": -1, "defaultVisibility": true, "subLayerIds": null, "minScale": 0, "maxScale": 0, "type": "Feature Layer", "geometryType": "esriGeometryPoint" } ], "tables": [], "relationships": [], "enableZDefaults": false, "allowUpdateWithoutMValues": false, "referenceScale": 0 }