THE FIVE TRIP END TRANSIT MODEL-A DESCRIPTION OF ITS THEORY AND DEVELOPMENT

FOUR DIFFERENT DISTRIBUTION MODELS WERE INVESTIGATED IN AN ATTEMPT TO FIND A MORE SUITABLE SIMULATION TECHNIQUE FOR MASS TRANSIT TRAVEL IN THE CHICAGO METROPOLITAN AREA. EACH MODEL WAS TESTED AGAINST THE 1956 HOME INTERVIEW DATA TO DETERMINE ITS ABILITY TO REPRODUCE AVERAGE TRIP LENGTH BY ZONE AND TO DETERMINE THE ACCURACY WITH WHICH BOTH ZONAL INTERCHANGES AND LINK OUTPUT COULD BE SIMULATED. STATISTICAL COMPARISONS OF THE OUTPUT FROM EACH MODEL WITH THE HOME INTERVIEW DATA SHOWED THAT TRANSIT DISTRIBUTION IN CHICAGO COULD NOT BE HANDLED WITHOUT IN SOME WAY PROPORTIONING TRIPS TO AND FROM THE CBD. TWO OF THE FOUR MODELS STUDIED WERE FOUND TO BE IN GROSS ERROR, PRIMARILY BECAUSE OF THEIR NONPROPORTIONING OF CBD TRIPS. MORE EXTENSIVE COMPARATIVE ANALYSIS WAS UNDERTAKEN ON THE REMAINING TWO MODELS TO DETERMINE IF THE NEWLY DEVELOPED FIVE TRIP END TRANSIT MODEL PROVIDED MORE OR LESS ACCURATE RESULTS THAN THE ORIGINAL MODEL USED IN 1956, THE PRECALCULATED INTERCHANGE MODEL. IN ADDITION TO THE INCREASED FLEXIBILITY AND SENSITIVITY INHERENT IN THIS NEW MODEL, A SLIGHT BUT SIGNIFICANT IMPROVEMENT WAS FOUND IN THE ACCURACY OF SIMULATION OUTPUT. /AUTHOR/

• Supplemental Notes:
  • CATS 344-03
• Corporate Authors:

  Chicago Area Transportation Study

  300 West Adams Street
  Chicago, IL  United States  60606
• Authors:
  • Walker, S A
• Publication Date: 1972-11

Media Info

• Features: Figures; Tables;
• Pagination: 45 p.

Subject/Index Terms

• TRT Terms: Mathematical models; Simulation; Transportation; Trip distribution
• Uncontrolled Terms: Transportation models
• Subject Areas: Operations and Traffic Management; Transportation (General);

Filing Info

• Accession Number: 00228366
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 5 1973 12:00AM