03730nam|a2200385 i 4500 20260818094608.0 030299s1985 th 0000|0 eng d .b10222200 AIT Thesis no.GT-84-15 Kangwan Srithanesphokai Economic feasibility of a u-turn overcrossing for traffic northbound from Don Muang airport, Bangkok Bangkok : Asian Institute of Technology, 1985 46 p. Thesis ; no. GT-84-15 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, 1985 Bangkok International Airport, situated 25 km north of the city, has been provided with excellent highway access from the city, and the dominant ground traffic reaches the airport by this means. Commercial, industrial, and academic communities situated north of the airport have ready access from the north, but return trips to the north require initial travel of about 4.5 km southerly toward the city, a U-turn at Laksri Interchange, and a 4.5-km return in the northward direction prior to passing the airport in the intended direction. the objective of the present study was an evaluation of the economic and physical feasibility of a U-turn overcrossing of the Princess Viphavadi Rangsit Highway in the vicinity of the airport to avoid the need of the 9-km trip through the Laksri Interchange. Roadside interviews were conducted for 12 hours on each of three days to determine an origin-destination trip matrix for U-turning vehicles at the Laksri Interchange. Those trips which, because of origin or because of destination, could not benefit from a U-turn overcrossing in the vicinity of the airport were eliminated from further consideration. The candidate trip matrix was expanded to represent 24-hour movement, initially from the 60% sample of interviews by means of the 12-hour classified vehicle count of U-turning vehicles, and subsequently by 24/12-n ratios obtained from the Thai Department of Highways classified volume counts of through traffic southbound on Princess Viphavadi Rangsit Highway. Vehicle operating costs and the distance value of travel time were obtained from the Highway Department. These were applied to evaluate the benefits to be derived through elimination of the 9-km return trips presently required of traffic destined for locations north of the airport. A benefic/cost ratio of 4.0, and an internal rate of return of about 80% were calculated, based on an estimated investment of Baht 40-million for a new U-turn overcrossing. Traffic engineering Thailand Bangkok Jones, John Hugh, IeChairperson Ishido, Akira, Examination Committee Prapansak Buranaprapa, Examination Committee Ret-Ser Engineering Agency Taipei, Taiwan, Republic of China, Scholarship Donor Asian Institute of Technology. Thesis ; no. GT-84-15 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B20043 .b10222200 mnait s 240329 2 951012 m a s 0 mnait mnarc 22 40 Barcode : 30050120655211 CREATED : 2014-03-14 RECORD # : i12772471 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160069109 CREATED : 2016-05-19 RECORD # : i12983123 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 33246 33246 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.GT-84-15 30050120655211 2026-08-18 09:46:08 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.GT-84-15 30050160069109 2026-08-18 09:46:08 1 2026-08-18 40