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{
    "localId": "645108",
    "label": "External and Truck Trip Survey File",
    "core": "doc",
    "dtoType": "document",
    "citationUrl": "https://catalog.archives.gov/id/645108"
}

{
    "id": "645108",
    "sourceUrl": "https://catalog.archives.gov/id/645108",
    "contentType": "document",
    "title": "External and Truck Trip Survey File",
    "description": "This file contains the results from two surveys, the External Survey and the Truck Survey.  External Survey data are from a 25-percent sample of trips made by persons entering, leaving, or passing through the Baltimore metropolitan area.  The External Survey records have data identifying each trip surveyed by point of entry and exit; month, day, and hour; origin and destination; land use; purpose; and intermediate stop (if made) in the area. Also included are vehicle data identifying the vehicle type and occupancy, including load and commodity for trucks, and sample weights. The Truck Survey contains trip data from a 15-percent sample of trucks registered in the Baltimore metropolitan area.  Data identify the truck by the sample number, year of manufacture, truck type, gross weight, industry, mileage, number of stops, and a sample weight.  Trip data include month and day of trip; trip number; origin and destination by sub zone, land use, and purpose; time and commodity carried.",
    "citationUrl": "https://catalog.archives.gov/id/645108",
    "collections": [
        "Records of the Maryland Department of Transportation",
        "Baltimore Metropolitan Area Transportation Study Files"
    ],
    "iiifBase": "https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/MDT/BMAT/RG200.BMATS.EXTRK.TXT",
    "thumbnailUrl": "https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/MDT/BMAT/RG200.BMATS.EXTRK.TXT",
    "largeImageUrl": "https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/MDT/BMAT/RG200.BMATS.EXTRK.TXT",
    "imageCount": 3,
    "hasImages": true,
    "source": "import",
    "hasTranscription": false
}

{
    "url": "https://catalog.archives.gov/id/645108",
    "naId": 645108,
    "levelOfDescription": "fileUnit",
    "recordType": "description",
    "ocrSource": "nara-archive"
}

{
    "seq": 3,
    "pageIndex": 0,
    "type": "document",
    "url": "https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/MDT/BMAT/BMAT_TSS391.pdf",
    "mediaId": "4481b45906a6b9b5",
    "ocrText": "Electronic Records Technical Specifications Summary (Manifest of Files)\nBaltimore Metropolitan Area Transportation Study Files, compiled 1962\nDescription ID: 645103\nNATIONAL\nARCHIVES\nSeries from Collection MDT: Records of the Maryland Department of Transportation\nElectronic Records\nDwelling Unit and Home Interview Trip Summary\nDescription_ID: 645105\nXMIS_No.: 003571\nPrepared: 7/11/2018\nSurvey File\nFile name: RG200.BMATS.DWHIS.TXT\nFormat: ASCII Text, fixed-length\nSize (bytes): 12714920\nRecord_Count: 155060\nRecord_Length: 82\nfields/records with two record-\ndelimiters (carriage return and line\nfeed); record length includes\ndelimiters\nExternal and Truck Trip Survey File\nDescription_ ID: 645108\nXMIS_No.: 003572\nPrepared: 7/11/2018\nFile name: RG200.BMATS.EXTRK.TXT\nFormat: ASCII Text, fixed-length\nSize (bytes): 13129020\nRecord_Count: 160110\nRecord_Length: 82\nfields/records with two record-\ndelimiters (carriage return and line\nfeed); record length includes\ndelimiters\nLink Data and Turn Prohibitor File\nDescription_ ID: 645114\nXMIS_No.: 003573\nPrepared: 7/11/2018\nFile name: RG200.BMATS.LDATP.TXT\nFormat: ASCII Text, fixed-length\nSize (bytes): 317258\nRecord_Count: 3869\nRecord_Length: 82\nfields/records with two record-\ndelimiters (carriage return and line\nfeed); record length includes\ndelimiters\nTechnical Documentation\nTechnical Documentation\nPrepared: 7/11/2018\nFile name: 391.1DP.pdf\nFormat: PDF\nSize (bytes): 28970437\n7/11/2018\nBaltimore Metropolitan Area Transportation Study Files, compiled 1962\nPage 1 of 2\nThe files listed on the Technical Specifications Summary and accessible through the National Archives Catalog are fully open. In some cases, the records may\nhave administrative markings indicating limited access to the records, but these markings are no longer applicable.\nDescriptions of the records are available via the National Archives Catalog.\nAny of the files listed above without a description ID are available on two or more of the descriptions for the electronic records files.\n7/11/2018\nBaltimore Metropolitan Area Transportation Study Files, compiled 1962\nPage 2 of 2"
}