{ "currentVersion" : 12, "serviceItemId" : "773aded5b724427c9442e2c8c1ce91c2", "serviceDescription" : "", "hasVersionedData" : false, "supportsDisconnectedEditing" : false, "hasStaticData" : false, "hasSharedDomains" : false, "maxRecordCount" : 2000, "maxIdsCount" : 1000000, "supportedQueryFormats" : "JSON", "supportsVCSProjection" : false, "supportedExportFormats" : "csv,shapefile,sqlite,geoPackage,filegdb,featureCollection,geojson,kml,excel", "supportedConvertFileFormats" : "JSON,PBF", "supportedConvertContentFormats" : "LayerEditCollection", "supportedFullTextLocales" : [ "neutral", "ar-SA", "bg-BG", "bn-IN", "ca-ES", "cs-CZ", "da-DK", "de-DE", "el-GR", "en-GB", "en-US", "es-ES", "fr-FR", "gu-IN", "he-IL", "hi-IN", "hr-HR", "id-ID", "is-IS", "it-IT", "ja-JP", "kn-IN", "ko-KR", "lt-LT", "lv-LV", "ml-IN", "mr-IN", "ms-MY", "nb-NO", "nl-NL", "pa-IN", "pl-PL", "pt-BR", "pt-PT", "ro-RO", "ru-RU", "sk-SK", "sl-SI", "sr-Cyrl-CS", "sr-Latn-CS", "sv-SE", "ta-IN", "te-IN", "th-TH", "tr-TR", "uk-UA", "ur-PK", "vi-VN", "zh-CN", "zh-HK", "zh-MO", "zh-SG", "zh-TW" ], "supportsSharedTemplates" : true, "hasSharedTemplates" : true, "capabilities" : "Query", "description" : "\u003cdiv style=\"text-align:Left;\"\u003e\u003cdiv style=\"text-align:center;\"\u003e\u003cimg alt=\"MDOT SHA\" src=\"https://geo.sha.maryland.gov/images/MDOT%20SHA%20150%20BLK%20Tran.png\" style=\"color:rgb(0, 0, 0); font-family:Verdana; font-size:14px;\" /\u003e\u003cbr /\u003e\u003c/div\u003e\u003cdiv\u003e\u003cfont face=\"Avenir Next W01, Avenir Next W00, Avenir Next, Avenir, Helvetica Neue, sans-serif\"\u003e\u003cspan style=\"font-size:16px;\"\u003eMDOT SHA Annual Average Daily Traffic (AADT) data consists of linear & point geometric features which represent the geographic locations & segments of roadway throughout the State of Maryland that include traffic volume metrics.  Traffic volume metrics are produced from traffic count information used to calculate annual average daily traffic (AADT), annual average weekday traffic (AAWDT), AADT based on vehicle class (current year only) for roadways throughout the State.  Overall percent utilization, percent utilization based on vehicle class, and truck-specific percent utilization are showcased as statistical metrics for each geographic location or segment of roadway throughout the State, where applicable. Ten (10) years of historic AADT & AAWDT traffic volume metrics are also available \u003c/span\u003e\u003c/font\u003e\u003cspan style=\"font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;\"\u003efor each geographic location or segment of roadway throughout the State, where applicable.\u003c/span\u003e\u003cbr /\u003e\u003c/div\u003e\u003cdiv\u003e\u003cspan style=\"font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;\"\u003e\u003cbr /\u003e\u003c/span\u003e\u003c/div\u003e\u003cdiv\u003e\u003cp\u003eAnnual Average Daily Traffic (AADT) data is collected from over 8700 program count stations and 84 ATRs, located throughout Maryland. The quality control feature of the system allow data edit checks and validation for data from the 91 permanent, continuous automatic traffic recorders (ATRs) and short-term traffic counts.  Program count data is collected in both directions (inventory & non-inventory) at regular locations on either a three (3) year or six (6) year cycle depending on the type of roadway. Growth factors are applied to counts which were not taken during the current year and the counts are factored based on the past yearly growth of an associated ATR. Counters are placed for 48 hours on a Monday or Tuesday and are picked up that Thursday or Friday, respectively. The ATR and toll count data is collected on a continuous basis. Toll station data is provided by the Maryland Transportation Authority (MDTA). A special numeric code was added to the AADT numbers, starting in 2006, to identify the years when the count was actually taken. The last digit represents the number of years prior to the actual count. Where “0” represents the current year when data was collected (in 2020), “1” represents the count taken in 2019, “2” represents the count taken in 2018, “3” represents the count taken in 2017 and so forth.\u003c/p\u003e\u003cp\u003eAnnual Average Daily Traffic (AADT) data is a strategic resource for the Federal Highway Administration (FHWA), the Maryland Department of Transportation (MDOT), the Maryland Department of Transportation State Highway Administration (MDOT SHA), as well as many other Federal, State & local government agencies. The data is essential in the planning, design and operation of the statewide road system and the development & implementation of State highway improvement & safety programs. The MDOT SHA Traffic Monitoring System (TMS) is a product of the ISTEA Act of 1991, which required a traffic data program to effectively & efficiently meet MDOT SHA’s long-term traffic data monitoring & reporting requirements.\u003c/p\u003e\u003cp\u003eAnnual Average Daily Traffic (AADT) data is updated and published on an annual basis for the prior year. This data is for the year 2021.\u003c/p\u003e\u003cp\u003eView the most current AADT data in the \u003ca href=\"https://maryland.maps.arcgis.com/apps/webappviewer/index.html?id=223148a698214294a7b43ed612a4e67d\" style=\"font-family:"Avenir Next", Avenir, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size:15px;\" target=\"_blank\" rel=\"nofollow ugc noopener noreferrer\"\u003e\u003cfont color=\"#b22222\"\u003eMDOT SHA Annual Average Daily Traffic (AADT) Locator\u003c/font\u003e\u003c/a\u003e\u003cbr /\u003e\u003c/p\u003e\u003cdiv style=\"font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;\"\u003e\u003cdiv style=\"font-family:inherit;\"\u003e\u003cfont size=\"3\" style=\"font-family:inherit;\"\u003eFor more AADT data information, contact MDOT SHA Traffic Monitoring System (TMS):\u003c/font\u003e\u003c/div\u003e\u003cdiv style=\"font-family:inherit;\"\u003e\u003cfont size=\"3\" style=\"font-family:inherit;\"\u003eEmail: \u003c/font\u003e\u003ca href=\"mailto:TMS@mdot.maryland.gov\" target=\"_blank\" rel=\"nofollow ugc noopener noreferrer\"\u003e\u003cfont color=\"#b22222\"\u003eTMS@mdot.maryland.gov\u003c/font\u003e\u003c/a\u003e\u003c/div\u003e\u003c/div\u003e\u003cdiv style=\"font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;\"\u003e\u003cdiv style=\"font-family:inherit; margin-bottom:3rem;\"\u003e\u003cdiv style=\"font-family:inherit; max-width:100%; display:inherit;\"\u003e\u003cdiv style=\"font-family:inherit;\"\u003e\u003cdiv style=\"font-family:inherit;\"\u003e\u003cfont size=\"3\" style=\"font-family:inherit;\"\u003e\u003cbr /\u003e\u003c/font\u003e\u003c/div\u003e\u003cdiv style=\"font-family:inherit;\"\u003e\u003cfont size=\"3\" style=\"font-family:inherit;\"\u003eFor more general information, contact MDOT SHA OIT Enterprise Information Services:\u003c/font\u003e\u003c/div\u003e\u003cdiv style=\"font-family:inherit;\"\u003e\u003cfont size=\"3\" style=\"font-family:inherit;\"\u003e\u003cfont style=\"font-family:inherit;\"\u003eEmail: \u003c/font\u003e\u003ca href=\"mailto:GIS@mdot.maryland.gov\" style=\"color:rgb(0, 121, 193); text-decoration-line:none; font-family:inherit;\" target=\"_blank\" rel=\"nofollow ugc noopener noreferrer\"\u003e\u003cfont color=\"#b22222\" style=\"font-family:inherit;\"\u003eGIS@mdot.maryland.gov\u003c/font\u003e\u003c/a\u003e\u003c/font\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e\u003c/div\u003e", "copyrightText" : "", "spatialReference" : { "wkid" : 102685, "latestWkid" : 2248 }, "initialExtent" : { "xmin" : 1359495.7731253796, "ymin" : 528613.62190460274, "xmax" : 1524638.7653948076, "ymax" : 636810.75477077952, "spatialReference" : { "wkid" : 102685, "latestWkid" : 2248 } }, "fullExtent" : { "xmin" : 608329.73742747307, "ymin" : 120205.67847722769, "xmax" : 1870051.9449491352, "ymax" : 756653.11850631237, "spatialReference" : { "wkid" : 102685, "latestWkid" : 2248 } }, "allowGeometryUpdates" : true, "supportsTrueCurve" : true, "trueCurveSupportMode" : "OGC", "supportedCurveTypes" : [ "esriGeometryCircularArc" ], "supportedTrueCurvePbfFeatureEncodings" : [ "esriCompressedShapeBuffer", "esriDefault" ], "allowTrueCurvesUpdates" : true, "onlyAllowTrueCurveUpdatesByTrueCurveClients" : false, "units" : "esriFeet", "supportsAppend" : true, "supportedAppendCapabilities" : "Features", "supportsSharedDomains" : true, "supportsWebHooks" : true, "supportsTemporalLayers" : true, "layerOverridesEnabled" : true, "size" : 4259840, "syncEnabled" : false, "supportsApplyEditsWithGlobalIds" : false, "supportsReturnDeleteResults" : true, "supportsLayerOverrides" : true, "supportsTilesAndBasicQueriesMode" : true, "supportsQueryContingentValues" : true, "supportedContingentValuesFormats" : "JSON, PBF", "supportsContingentValuesJson" : 2, "advancedEditingCapabilities" : { "supportsSplit" : false, "supportsReturnServiceEditsInSourceSR" : false, "supportsAsyncApplyEdits" : true, "supportsReturnEditResults" : true, "supportsApplyEditsbyUploadID" : true, "supportedApplyEditsUploadIDFormats" : "JSON,PBF" }, "editorTrackingInfo" : { "enableEditorTracking" : false, "enableOwnershipAccessControl" : false, "allowOthersToQuery" : true, "allowOthersToUpdate" : true, "allowOthersToDelete" : false, "allowAnonymousToQuery" : true, "allowAnonymousToUpdate" : true, "allowAnonymousToDelete" : true }, "xssPreventionInfo" : { "xssPreventionEnabled" : true, "xssPreventionRule" : "InputOnly", "xssInputRule" : "rejectInvalid" }, "layers" : [ { "id" : 0, "name" : "KAI_StudyNetwork_Dissolve_RtNameDesc_052825", "parentLayerId" : -1, "defaultVisibility" : true, "subLayerIds" : null, "minScale" : 0, "maxScale" : 0, "type" : "Feature Layer", "geometryType" : "esriGeometryPolyline" } ], "tables" : [] }