03247cam a2200409 i 4500 20260817162428.0 251198s1991 th r 0000|00eng d .b10082001 AIT Thesis no. GT-90-23 Tan, Kim Foo Analysis of saturation flow rate in Bangkok Bangkok : Asian Institute of Technology, 1991 147 p. Thesis ; no. GT-90-23 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 1991 Intersection capacity is based on saturation flow rate. In reality, the saturation flow rate changes considerably on such road and traffic conditions s uch as the geometry of intersections number of right-turn vehicles, number of left-turn vehicles, number of heavy vehicles in the traffic stream and etc . Therefore, in principle the saturation flow rate should be determined base on the actual measurement at the concerned intersections. In this study , the saturation flow rates of straight- ahead and unopposed right-turning movements were surveyed. The ef feet of trucks was also evaluated. Saturation flow rates and PCEs determined by different methods were then compared. New approach for PCEs and saturation flow rates were developed and tested. Theoretically, the PCEs depend on the truck's position in the queue, but for practical work, the difference can be ignored. Right turn movement is equivalent to straight-ahead movement for passenger cars. The average headways of straight- ahead movement obtained for Phahonyothin - Pradiphat, Ratcahwithi - Rama VI and Rangsit are 1.91 , 1.86 and 2.16 respectively . PCE for trucks of right turning is larger than that of straight- ahead movement . PCEs of straight- ahead movement and right turn movement obtained in this study for Rangsit intersection were 1.53 and 1.68 respectively . Traffic flow Thailand Bangkok Mori, Hiroshi, Chairperson Yordphol Tanaboriboon, Examination Committee Fukuda, Atsushi, Examination Committee Asian Development Bank, Scholarship Donor Asian Institute of Technology. Thesis ; no. GT-90-23 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B17558 .b10082001 mnait s 240410 2 951012 m a s 0 mnait mnait mnarc 20 40 Barcode : 30050003017091 CREATED : 1995-10-13 RECORD # : i10084198 LPATRON : 1019348 LCHKIN : 2008-05-18 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050003017109 CREATED : 1995-10-13 RECORD # : i10084204 LPATRON : 1019348 LCHKIN : 2008-11-06 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 7 TOT RENEW : 1 Barcode : 30050120309272 CREATED : 2016-05-25 RECORD # : i12991041 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 4992 4992 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. GT-90-23 30050003017091 2026-08-17 16:24:28 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. GT-90-23 30050003017109 2026-08-17 16:24:28 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. GT-90-23 30050120309272 2026-08-17 16:24:28 1 2026-08-17 40