EXAMINATION OF CONSISTENCY IN SIGNALIZED INTERSECTION CAPACITY CHARTS OF THE HIGHWAY CAPACITY MANUAL

INTERSECTION CAPACITY CHARTS OF THE 1965 HIGHWAY CAPACITY MANUAL HAVE BEEN ANALYZED FOR CONSISTENCY, GIVING MAJOR EMPHASIS TO ACTUAL VS. EXPECTED DIFFERENCES IN RESULTS WHEN CHANGES ARE MADE IN PARKING CONDITIONS AND IN WIDTH OF APPROACH FOR ONE-WAY AND TWO-WAY OPERATION. COMPARISONS ARE ALSO MADE WITH METHODS FOR COMPUTING CAPACITY AS DEVELOPED IN GREAT BRITAIN AND AUSTRALIA. FINDINGS INDICATE THAT THE INDIVIDUAL CURVES IN THE 1965 MANUAL ARE NOT ENTIRELY CONSISTENT WITH EACH OTHER. CONSISTENCY WOULD BE IMPROVED BY SHIFTING TWO OF THE CURVES TO DIFFERENT POSITIONS (TWO-WAY STREETS WITH PARKING AND ONE-WAY STREETS WITH PARKING ON BOTH SIDES). CARE SHOULD BE TAKEN WHEN USING THE PRESENT CURVES TO DETERMINE EFFECTS OF SUCH CHANGES AS PROHIBITING PARKING, CHANGING FROM ONE-WAY TO TWO-WAY OPERATION, OR CHANGING THE LANE MARKINGS ON WIDE APPROACHES. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 14-24
  • Monograph Title: Highway capacity
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00225580
  • Record Type: Publication
  • Report/Paper Numbers: Paper No 1
  • Files: TRIS, TRB
  • Created Date: Jan 12 1970 12:00AM