REDISTRIBUTION OF TRAFFIC IN THE DAN RYAN EXPRESSWAY CORRIDOR

THE EFFECT OF THE OPENING OF THE DAN RYAN EXPRESSWAY ON THE DISTRIBUTION OF TRAFFIC ON LOCAL AND ARTERIAL STREETS WAS EXAMINED. THE TRAFFIC VOLUME DATA SHOWED A DIVERSION OF TRAFFIC FROM LOCAL STREETS TO ARTERIALS OR TO THE EXPRESSWAY. THE FACT THAT THROUGH TRIPS WERE USING LOCAL STREETS BEFORE THE EXPRESSWAY WAS OPENED WAS ATTRIBUTED TO CONGESTION ON ARTERIALS. THE TRAFFIC COUNTS SHOWED ALSO THAT THIS DIVERSION OF TRIPS FROM LOCAL STREETS WAS MUCH GREATER DURING THE PEAK HOURS OF TRAVEL. TRIP DATA FROM THE BEFORE AND AFTER ORIGIN AND DESTINATION STUDIES OF THE DAN RYAN EXPRESSWAY INDICATED THAT THE CAUSE FOR THE INCREASE IN TOTAL TRAFFIC CROSSING THE 63RD STREET SCREENLINE FROM DAMEN AVENUE TO LAKE MICHIGAN WAS A CHANGE IN ROUTE CHOICE. NEW TRAFFIC REPRESENTATING A CHANGE OF MODE OR CHANGE OF DESTINATION APPEARS TO BE TOO SMALL TO MEASURE. REFERENCES' OBTAINING TRIP LENGTH DATA BY ROADSIDE INTERVIEWING - AN EVALUATION, CATS RESEARCH NEWS, VOL. 6, NO. 2, MAY 1, 1964. ACCIDENT EXPERIENCE' ARTERIAL VS EXPRESSWAYS, I. HOCH, CATS, 1959. ACCIDENT RATES BY STREET TYPE, FREDERICK F. FRYE CATS, 1961. EXPRESSWAYS' TRAFFIC AND ACCIDENTS, FREDERICK F. FRYE, CATS, 1962. THE EFFECT OF DAN RYAN EXPRESSWAY UPON PARALLEL ARTERIAL STREETS, CHICAGO MOTOR CLUB, 1964.

  • Supplemental Notes:
    • Research NeWS, VOL 6, NO 3, PP 6-14, 2 FIG, 4 TAB
  • Corporate Authors:

    Chicago Area Transportation Study

    300 West Adams Street
    Chicago, IL  United States  60606
  • Authors:
    • Frye, F F
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00227585
  • Record Type: Publication
  • Source Agency: Urban Transp Plng Abstracts /Prelim
  • Files: TRIS
  • Created Date: Aug 15 2004 2:02AM