000 04074nam a2200409 4500
005 20260818090418.0
008 190698 th eng
035 _a.b11632847
099 9 _aAIT Thesis no. TE-96-04
100 1 _aMathetharan, Vijayarajah
245 1 0 _aDetermination of highway capacity on uninterrupted flow highway
260 _aBangkok :
_bAsian Institute of Technology,
_c1997
300 _a140 p.:
_bill.
490 1 _aThesis ;
_vno. TE-96-04
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1996
500 _aA thesis submitted in pa1iial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering
520 _aAccurate knowledge of the current operational traffic behavior inevitably enhances the reliability of planning and design of the highway facilities. The use of an accurate value of basic capacity is necessary in calculating service flow rates which are the close representatives of traffic behavior. This study was canied out as a stepping stone towards the determination of the basic capacity of uninterrupted flow highway facilities in Thailand. Speed-flow-density analysis was used as primary methodology to determine the capacity. Average speed difference distribution method and average minimum time headway approach were used as benchmark tests. A photographic technique through video recording was used to collect relevant data from one of the busiest expressways in Thailand, namely the Chalerm Maha Nakhon Expressway. The data were extracted manually from the recording. The extracted data were analyzed to find the key variables such as speed, flow and density and other necessary parameters such as headway and passenger car equivalents (PCE) which are used to find the focal point, the capacity. Seven appropriate mathematical models which relate speed, flow and density were hypothesized and then calibrated to find the functional fit to the collected data. The graphical representation of models with different curves were analyzed in detail. The analyses were carried out on a separate lane basis and on a combined average lane basis. The analyses were done separately on data acquired in 5-min and 15-min intervals. The capacity values for different cases were found using the calibrated model expressions and graphical representation of models. The average value of capacity for uninterrupted flow highway based on the speed-flowdensity approach was found to be about 2400 passenger cars per hour per lane (pcphpl). This obtained capacity value is 16.67% higher than the value of 2000 pcphpl currently used in Thailand. Moreover, the value is 9 .17% higher than the benchmark value previously obtained by using minimum time headway approach in Thailand. However, the obtained capacity value is in concordance with the value that the Highway Capacity Manual (HCM) predicts.
650 1 0 _aHighway capacity
700 0 _aYordphol Tanaboriboon,
_eChairperson
700 1 _aMorisugi, Hisa,
_eExamination committee
700 1 _aChen, Jian-Shiuh,
_eExamination committee
710 2 _aThe Government of Japan,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. TE-96-04
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B14177
907 _a.b11632847
_bmnait
_cs
902 _a240402
998 _b0
_c970902
_dm
_ea
_fs
_g0
945 _lmnait
945 _lmnait
945 _lmnarc
942 _c20
942 _c40
909 _aBarcode : 30050120817589
_bCREATED : 1997-02-09
_cRECORD # : i11989889
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
909 _aBarcode : 30050120817571
_bCREATED : 1997-02-09
_cRECORD # : i11989890
_dLPATRON : 1015034
_eLCHKIN : 2004-03-27
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 6
_jTOT RENEW : 1
909 _aBarcode : 30050160014758
_bCREATED : 2016-03-22
_cRECORD # : i12902123
_dLPATRON : 0
_eLCHKIN : -
_f# RENEWALS : 0
_g# OVERDUE : 0
_hIUSE3 : 0
_iTOT CHKOUT : 0
_jTOT RENEW : 0
999 _c28002
_d28002