OPTIMIZING FLOW ON EXISTING STREET NETWORKS

EXPERIMENTS WERE CONDUCTED IN LOUISVILLE, KY., AND NEWARK, N.J., TO INVESTIGATE HOW TRAFFIC ENGINEERING MEASURES CAN BENEFIT TRAFFIC FLOW IN DOWNTOWN AREAS AND TO QUANTIFY THE EFFECTS OF ROAD IMPROVEMENTS IN THIS REGARD. PRELIMINARY STUDIES EMBRACING INVENTORIES OF STREET AND TRANSIT FACILITIES, ANALYSIS OF EXISTING TRAFFIC ENGINEERING DATA, TRAFFIC OPERATIONS, MASS TRANSIT OPERATIONS, AND ACCIDENT RECORDS WERE CONDUCTED TO IDENTIFY AND RECTIFY DEFICIENCIES. COST OF PERMANENT IMPROVEMENT WERE BORNE BY THE LOCAL GOVERNMENTS, ENGINEERING COSTS BY THE NCHRP PROJECT. ANALYSES WERE MADE OF THE LOCAL AND NETWORK EFFECTS OF IMPROVEMENTS, AND A GENERALIZED ANALYSIS WAS CONDUCTED TO DEVELOP A METHODICAL APPROACH TO TRAFFIC FLOW ANALYSIS IN CONGESTED URBAN AREAS. THIRTY- SEVEN EXPERIMENTS WERE CONDUCTED, EMPLOYING AS VARIABLES MASS TRANSIT, ENFORCEMENT, SAFETY, PUBLIC CONVENIENCE, AND OTHER ASPECTS OF TRAFFIC ENGINEERING IN THE DOWNTOWN AREA. THE VARIANCE AND DISTRIBUTION OF FLOW DATA WERE COMPUTED, AND INFORMATION WAS DEVELOPED FOR CONTROL OF DOWNTOWN SURVEYS. SEVERAL MODELS WERE DEVELOPED AND USED. A METHOD FOR DESCRIBING A LEVEL OF SERVICE FOR DOWNTOWN STREETS WAS DEVELOPED FROM THE STUDY OF TRAVEL TIME. FINDINGS ARE REPORTED, SOME OF WHICH BEAR ON DEFINITION OF THE TERMS "SERVICE" AND "IMPROVEMENT" FROM THE STANDPOINTS OF TRAFFIC FLOW AND DRIVER BEHAVIOR. SUGGESTIONS WERE MADE FOR APPLYING THE FINDINGS TO THE URBAN AREA TRANSPORTATION STUDY REQUIRED OF ALL CITIES WITH A POPULATION OVER 50,000, TO FUNCTIONAL (ARTERIAL, LIMITED ARTERIAL, CIRCULATION, AND LAND SERVICE ROADWAYS) AN OPERATIONAL (TRAVEL TIME, LEVEL OF SERVICE, DELAY, LOCATION) ANALYSES, AND TO CONTINUING REVIEWS.

  • Supplemental Notes:
    • Nchrp PROJ 3-14
  • Publication Date: 1970-11

Media Info

  • Pagination: 5 p.
  • Serial:
  • Publication flags:

    Open Access (libre)

Subject/Index Terms

Filing Info

  • Accession Number: 00225940
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Apr 18 1971 12:00AM