PROPAGATION OF ON-RAMP DENSITY PERTURBATIONS ON UNIDIRECTIONAL TWO- AND THREE-LANE FREEWAYS

BASED UPON EXPECTED VALUE HYDRODYNAMIC PRINCIPLES, THIS PAPER IS A INVESTIGATION OF THE EFFECTS OF ON- RAMP FLOW ON UNIDIRECTIONAL TWO AND THREE-LANE FREEWAYS. THIS ANALYSIS INVOLVES THE STUDY OF THE PERTURBED TRAFFIC DENSITY ON THE FREEWAY WHICH HS BEEN INITIATED BY THE ON-RAMP FLOW AND WHICH IS DEFINED AS THE DIFFERENCE IN THE ACTUAL INSTANTANEOUS PREVAILING TRAFFIC DENSITY AND THE EQUILIBRIUM TRAFFIC DESITY WHICH WOULD PREVAIL UNDER STEADY-STATE TRAFFIC CONDITIONS. THE PAPER THEN GIVES THE ANALYSIS WHICH PREDICTS THE PROPAGATION OF SUCH PERTURBED DENSITIES IN SPACE AND TIME FROM THE ON-RAMP. THE ANALYTICAL FORMULATION IS BASED UPON THE PRIMARY GOVERNING MECHANISMS WHICH CONTRIBUTE SIGNIFICANTLY TO THE TRAFFIC BEHAVIOR IN THE VICINITY OF AN ON-RAMP. A BRIEF DISCUSSION CONCERNING THE EXPERIMENTAL VALIDATION OF THE VARIOUS ASSMPTIONS MADE IN THIS PAPER IS ALSO INCLUDED. /TR/

• Supplemental Notes:
  • Vol 5, No 4, PP 241-255, 8 FIG, 9 REF
• Authors:
  • Munjal, P K
  • Pipes, L A
• Publication Date: 1971-12

Media Info

• Serial:
  • Transportation Research /UK/
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Freeways; Hydrodynamics; Interchange ramps; Mathematical models; Merging traffic; On ramps; One way traffic; Perturbation theory; Three lane highways; Traffic density; Traffic flow; Traffic lanes; Two lane highways; Weaving traffic
• Old TRIS Terms: Freeway ramps; Lanes
• Subject Areas: Highways; Hydraulics and Hydrology; Operations and Traffic Management;

Filing Info

• Accession Number: 00226215
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 24 1972 12:00AM