INTERSECTION CAPACITY MEASUREMENT THROUGH CRITICAL MOVEMENT SUMMATIONS: A PLANNING TOOL

THE CRITICAL MOVEMENT TECHNIQUE DISCUSSED WAS IMPROVISED NOT TO REPLACE THE ANALYSIS TECHNIQUES IN THE HIGHWAY CAPACITY MANUAL, BUT TO MEET THE NEED FOR PRESENTING A PICTURE TO THE LAYMAN OF HOW AN INTERSECTION OPERATES WITHOUT LOSING HIM IN A DISCUSSION OF PEAK-HOUR FACTORS AND G/C RATIOS. THE METHOD WAS VALUABLE IN EXAMINING A GROUP OF INTERSECTIONS TO DETERMINE THOSE MOST ABLE TO ABSORB THE LOAD FROM A NEW EMPLOYMENT CENTER. ANOTHER USE OF THE TECHNIQUE IS TO DETERMINE THE INCREMENT OF DEVELOPMENT WHICH CAN BE ADDED AS A RESULT OF EACH CHANGE IN INTERSECTION CONFIGURATION. USE OF THE TECHNIQUE TO DATA HAS BEEN RELATED PRINCIPALLY TO SITE PLANNING, BUT TWO OTHER DIVERSE APPLICATIONS HAVE BEEN SUGGESTED. ONE IS AS AN ALGORITHM FOR CAPACITY RESTRAINT TRAFFIC ASSIGNMENTS. IN A NETWORK FOR AN URBANIZED AREA, INTERSECTIONS ARE MUCH MORE LIKELY TO DETERMINE CAPACITY THAN LINKS, YET PRESENT PROGRAMS STATE CAPACITY AS A FUNCTION OF LINK VOLUME. AT THE OPPOSITE END OF THE SPECTRUM, THE TECHNIQUE CAN BE USEFUL AS A QUICK CHECK ON THE LEVEL OF SERVICE AT THE INTERSECTION IN A STREET NETWORK AND POSSIBLE EVEN AS A ROUGH WARRANT FOR SIGNALIZATION. /AUTHOR/

  • Supplemental Notes:
    • Vol 41, No 4, PP 45-46+
  • Authors:
    • Mc, INERNEY HB
    • Peterson, S G
  • Publication Date: 0

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Filing Info

  • Accession Number: 00228045
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 3 1971 12:00AM