NOTES ON FREEWAY CAPACITY
A DISCUSSION OF OPERATING CHARACTERISTICS ON RURAL FREEWAYS AT VOLUMES LESS THAN CAPACITY WHICH WILL RESULT IN A LEVEL OF SERVICE IS GIVEN. BOTH DESIGN CAPACITY AND POSSIBLE CAPACITY OF A UNIFORM SEGMENT OF AN URBAN FREEWAY ARE THEN DISCUSSED. THE GENERAL PROCEDURE DETERMINED FOR CHECKING WEAVING AND MERGING IS' 1/ ESTABLISH A GIVEN GEOMETRIC CONDITION, 2/ ESTIMATE VOLUMES THE VARIOUS TRAFFIC MOVEMENTS, 3/ VOLUME DETERMINATION BY USE OF DISTRIBUTION BY LANE OF ONE-WAY THROUGH TRAFFIC AND PERCENTAGE DISTRIBUTION OF ON-AND OFF-RAMP TRAFFIC IN RIGHT LANE AND AUXILIARY LANE, 4/ AVERAGE VOLUME PER LANE ACROSS ALL LANES SHOULD NOT EXCEED 1800 PER LANE, AND 5/ NUMBER OF WEAVING VEHICLES IN ANY 500-FT SEGMENT SHOULD NOT EXCEED 2100 VPH. THE ANALYSIS OF INTERCHANGE CAPACITY IS ESSENTIALLY THE ANALYSIS OF CONDITIONS AT RAMP TERMINALS.
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Supplemental Notes:
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Authors:
- Moskowitz, Karl
- Newman, Leonard
- Publication Date: 1963
Media Info
- Media Type: Digital/other
- Features: Appendices; Figures; References; Tables;
- Pagination: pp 44-68
- Monograph Title: Highway and interchange capacity
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Serial:
- Highway Research Record
- Issue Number: 27
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Analysis; Design capacity; Freeway operations; Freeways; Geometric design; Highway capacity; Interchanges; Lane distribution; Merging traffic; Ramps; Rural highways; Traffic volume; Weaving traffic
- Subject Areas: Highways; Operations and Traffic Management;
Filing Info
- Accession Number: 00224751
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Dec 12 1994 12:00AM