NEW YORK PORT AUTHORITY'S 1958 O-D SURVEY USING CONTINUOUS SAMPLING

CONTINUOUS ORIGIN AND DESTINATION SAMPLING HAS MANY ADVANTAGES. FOR EXAMPLE, SURVEY RESULTS TEND TO BE MORE REPRESENTATIVE, UP-TO-DATE INFORMATION ON O-D PATTERNS IS AVAILABLE AT ALL TIMES, FEWER EMPLOYEES ARE REQUIRED AND THEY TEND TO HAVE MORE SKILL THAN TEMPORARY EMPLOYEES, TRAFFIC CONGESTION IS AVOIDED DURING INTERVIEWS, AND BY USING A PROBABILITY SAMPLE, IT IS POSSIBLE TO COMPUTE MATHEMATICALLY THE DEGREE OF RELIABILITY ACHIEVED BY THE SURVEY AND THUS KEEP A CONSTANT CHECK ON THE ACCURACY OF THE RESULTS. THE SAMPLE WAS DEVELOPED ALONG SOME OF THE FOLLOWING LINES: (1) FOUR PERMANENT INTERVIEWERS MADE 11 INTERVIEW TOURS PER WEEK AND ALSO DID THE OFFICE WORK, (2) EIGHT-HOUR SHIFTS WERE MAINTAINED, (3) THE INTERVIEWER MOVES FROM ONE LANE TO ANOTHER EACH HOUR, (4) THE AVERAGE WORK LOAD IS 40 INTERVIEWS PER HOUR, AND (5) TO ASSURE A SELF-WEIGHING SAMPLE, A PROCEDURE OF BALANCING ACTUAL INTERVIEWS AGAINST EXPECTED INTERVIEWS WAS INTRODUCED. THIS NEW METHOD OF CONTINUOUS SAMPLING HAS BEEN SUCCESSFUL AND WILL CONTINUE.

Language

  • English

Media Info

  • Monograph Title: Traffic origin-and-destination studies: appraisal of methods
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00227806
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 15 2004 2:36AM