ORIGIN AND DESTINATION SURVEY METHODS AS APPLIED TO THE TRANSPORTATION STUDY-BALTIMORE METROPOLITAN AREA

THE TRANSPORTATION STUDY WAS DIVIDED INTO THREE PHASES: (1) INTERNAL SURVEY, INCLUDING (A) SAMPLING, (B) HOME INTERVIEWS, (C) TRUCK INTERVIEWS, AND (D) TAXI INTERVIEWS; (2) EXTERNAL SURVEY; AND (3) PARKING SURVEY. THE SAMPLE WAS 5 PERCENT FOR HOME INTERVIEWS SELECTED FROM LAND USE MAPS AND 20 PERCENT FOR TRUCKS AND TAXIS. THE TRUCK SAMPLE WAS SELECTED FROM THE RECORDS OF THE COMMISSIONER OF MOTOR VEHICLES AND THE TAXI SAMPLE WAS OBTAINED FROM THE OFFICE OF THE PUBLIC SERVICE COMMISSION. TO CHECK THE ACCURACY AND COMPLETENESS OF THE EXPANDED INTERVIEW DATA AGAINST ACTUAL COUNTS, THREE CONTROL POINTS, OUTSTANDING EASILY RECOGNIZED STRUCTURES, AND A SCREEN LINE WERE SELECTED. DAILY VOLUME COUNTS WERE MADE AND CLASSIFIED BY TYPE OF VEHICLE AT EACH OF THE CONTROL POINTS AND EACH OF THE TEN STREETS AND ROADS CROSSING THE SCREEN LINE. THESE VOLUMES WERE THAN COMPARED WITH VOLUMES CROSSING THE CONTROL POINTS AND STREETS AND ROADS ON THE SCREEN LINE AS DETERMINED BY THE EXPANDED INTERVIEW DATA. FOR THE 16-HOUR PERIOD FROM 6:00 A.M. TO 10:00 P.M. THE INTERVIEW ACCURACY WAS 89 PERCENT WHILE A SIMILAR CHECK FOR THE MORNING AND AFTERNOON PEAK HOURS SHOWED AN ACCURACY OF 98.5 PERCENT. THE EXTERNAL SURVEY DETERMINED THE TRAVEL HABITS OF PERSONS DRIVING INSIDE AND OUT OF THE METROPOLITAN AREA. THIS WAS ACCOMPLISHED BY ROADSIDE INTERVIEWS AT SELECTED STATIONS WHERE ALL VEHICLES, OTHER THAN MILITARY, FEDERAL, STATE-OWNED AND REGULARLY SCHEDULED BUSES, WERE STOPPED. THE DATA OBTAINED WERE USED TO PREPARE DESIRED LINE OF TRAVEL FOR ALL TYPES OF MOTOR VEHICLES INCLUDING PASSENGER CARS, TAXIS AND TRUCKS AND FOR MASS TRANSPORTATION PASSENGERS. A TRAFFIC FLOW MAP PREPARED IN 1938 WAS ADJUSTED TO COMPENSATE FOR THE DIFFERENCES IN TRAFFIC FLOW VOLUME SINCE THAT YEAR, CAUSED BY CHANGING CERTAIN STREETS FROM TWO-WAY TO ONE-WAY TRAVEL. WHEN COMPARED TO THE MAJOR DIRECTIONAL DESIRE LINES IT SHOWS WHERE MOTORISTS ARE NOW TRAVELING AND THE DIRECTION AND VOLUMES IN WHICH THEY WOULD TRAVEL IF SUITABLE FACILITIES WERE AVAILABLE. FIFTEEN ROUTES CLOSELY CONFORMING TO THE 16 MAJOR DIRECTIONAL DESIRE LINES WERE STUDIED. BECAUSE OF THE SERIOUSNESS OF THE PARKING SITUATION A SEPARATE PARKING SURVEY OF THE DOWNTOWN AREA OF BALTIMORE CITY COMPRISING 127 CITY BLOCKS WAS CONDUCTED. AN INVENTORY WAS MADE OF ALL PARKING FACILITIES, BOTH ON-STREET AND OFF-STREET, IN THE SELECTED AREA AND FOR TWO BLOCKS IMMEDIATELY OUTSIDE OF THAT AREA. OVER 35,000 CARS ARE PARKED IN THE DOWNTOWN AREA DURING THE 8-HR. PERIOD FROM 10:00 A.M. UNTIL 6:00 P.M. OF THIS TOTAL, 45 PERCENT WERE PARKED AT CURBS, 17 PERCENT IN GARAGES, AND 38 PERCENT ON LOTS. THE PRINCIPAL PURPOSES OF TRIPS WERE FOUND TO BE: WORK-42.7 PERCENT; BUSINESS-30.8 PERCENT; AND SHOPPING-17.3 PERCENT. /AUTHOR/

  • Supplemental Notes:
    • Vol 26, pp 422-430, 1 FIG, 1 TAB
  • Authors:
    • Childs, W F
  • Publication Date: 1947

Media Info

  • Monograph Title: Proceedings of the Twenty-Sixth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 5-8, 1946
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00228070
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jun 5 1982 12:00AM