ANALYTICAL MODELS OF MULTILANE TRAFFIC FLOW, STUDY II. VOLUME I

THESE THREE VOLUMES GIVE MAJOR CCONTRIBUTIONS IN THE STUDY OF STATISTICAL CHARACTERISTICS OF FREEWAY TRAFFIC, EXTENSION OF CONTINUUM MODELS FOR MULTILANE FREEWAYS INVOLVING VARIOUS LANE-CHANGING AND CAR-FOLLOWING HYPOTHESES, EXTENSION AND DEVELOPMENT OF BOLTZMANN TYPE MODELS FOR SPEED DISTRIBUTIONS ON MULTILANE FREEWAYS, AND IN THE DEVELOPMENT OF A FLEXIBLE SUMULATION MODEL IN MODULAR FORM TO REPRESENT FREEWAYS OF ARBITRARY CONFIGURATIONS AND INTERCHANGES. THE EFFECTS OF THE INTERFACE BETWEEN SURFACE STREET AND FREEWAY ARE ALSO STUDIED IN THE FORM OF ON- AND OFF-RAMP MODELS, ESTIMATION OF ON-RAMP FLOW AND PREDICTION AND STABILITY OF FREEWAY GAPS IN THE VICINITY OF ON ON-RAMP. USING REDUCED AERIAL TRAFFIC DATA FROM A NUMBER OF FREEWAYS, AS WELL AS GROUND DATA FROM THE FHWA TRAFFIC ANALYZER, VALIDATION STUDIES ON THEORETICAL MODELS WERE CONDUCTED IN ALL OF THE ABOVE AREAS. THE RESULTS OF THESE STUDIES HAVE POTENTIALLY WIDE APPLICATION TO THE OPERATION AND DESIGN OF FREEWAYS. THE FIRST REPORT IN THIS VOLUME GIVES A COMPREHENSIVE SUMMARY OF ALL REPORTS IN THE THREE VOLUMES. EMPHASIS IS ON THE RELATIONS AMONG STUDIED AREAS, THEIR MERITS AND APPLICATIONS. THE FOLLOWING THREE REPORTS ARE CONCERNED WITHD THE CHARACTERISTICS AND STATISTICAL PROPERTIES OF MULTILANE FREEWAY TRAFFIC. HEADWAYS, SPEEDS, AND OTHER IMPORTANT TRAFFIC DISTRIBUTIONS ARE PLOTTED FOR TWO-, THREE- AND FOUR-LANE FREEWAYS. THEIR STATISTICAL PROPERTIES ARE STUDIED. PROCEDURES ARE DEVELOPED TO OBTAIN THESE DISTRIBUTIONS FROM AERIAL DATA. THE LAST TWO REPORTS IN THIS VOLUME PROVIDE EXPERIMENTAL VALIDATION OF CAR-FOLLOWING MODELS USING AERIAL DATA, AS WELL AS THE DEVELOPMENT OF A NEW CAR-FOLLOWING MODEL APPLICABLE TO A FREEWAY ON-RAMP. /FHWA/

• Corporate Authors:

  System Development Corporation

  2500 Colorado Avenue
  Santa Monica, CA  United States  90409
• Publication Date: 1972-7

Media Info

• Pagination: 285 p.

Subject/Index Terms

• TRT Terms: Aerial surveying; Car following; Freeway operations; Freeways; Highway design; Interchange ramps; Mathematical models; Ramps; Statistical mechanics; Statistics; Studies; Traffic flow; Traffic flow theory; Traffic simulation; Traffic speed
• Uncontrolled Terms: Models
• Old TRIS Terms: Aerial surveys; Boltzmann distribution; Freeway design; Freeway entrances and exits; Freeway ramps; Speed studies
• Subject Areas: Data and Information Technology; Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00227030
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: Final Rpt.
• Contract Numbers: DOT-FH-11-7628
• Files: TRIS, USDOT
• Created Date: Jul 16 1974 12:00AM