03577nas|a2200445 i 4500 20260818134552.0 160701s2001 th uzm rtt 00| a1eng d .b11829679 AIT RSPR no. TE-00-02 Karn Sinseubpol Improvement of a dangerous highway : a case study: Highway Number 323, Thongphaphum District to Sangklaburi District (STA 64+500 to STA 67+000) Bangkok : Asian Institute of Technology, 2001 70 leaves Research studies project report ; no. TE-00-02 A research study submitted in partial fulfillment of the requirements for the degree of Master Engineering, School of Civil Engineering Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 2001 There are many under-standard highways in Thailand. The highway geometric design was not used to design and build those highways. When civilization came into those regions, the existing highways were still used for traveling and transportation. Many problems occurred in particular traffic accidents because of drivers who are not familiar with those highways. The accidents are much more serious when they occurred in mountainous area. This research selected one of the most dangerous highways in Thailand, "Highway No. 323 Thongphaphum District to Sangklaburi District {STA 64+500 to STA 67+000). This highway section can be classed into under-standard and high risk of accident highway because from STA 65+000 to STA 66+500 (1.5 kilometers) is a steep grade downhill with average gradient of 12% (the maximum gradient was more than 20%). At the bottom of this steep grade downhill is a break-elbow-curve locally known as "the Fatal Curve". Many vehicles such as buses, lost control resulted to various severe accidents and those accidents caused many deaths. This research proposed solutions to improve the existing highway to be the conceptual standard highway by using highway geometric design techniques and road safety audit approach. Project cost is also developed to show feasibility of the recommended improvement of this highway section Roads Thailand Maintenance and repair Thailand Highway 323 Takahashi, Kiyoshi, Chairperson Prapansak Buranaprapa, Examination Committee Yordphol Tanaboriboon, Examination Committee Pannapa Herabat, Examination Committee Park, Dong Joo, Examination Committee AIT Partial Scholarship, Scholarship Donor Asian Institute of Technology. Research studies project report ; no. TE-00-02 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B07607 .b11829679 mnait u 240405 0 010716 m a u 0 mnait mnait mnarc 20 40 Barcode : 30050120583389 CREATED : 2000-02-17 RECORD # : i12249178 LPATRON : 1026190 LCHKIN : 2015-02-09 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 9 TOT RENEW : 3 Barcode : 30050120583397 CREATED : 2000-02-17 RECORD # : i1224918x LPATRON : 1013262 LCHKIN : 2000-10-11 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 2 TOT RENEW : 0 Barcode : 30050120350409 CREATED : 2016-10-06 RECORD # : i13029538 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 58694 58694 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT RSPR no. TE-00-02 30050120583389 2026-08-18 13:45:52 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT RSPR no. TE-00-02 30050120583397 2026-08-18 13:45:52 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT RSPR no. TE-00-02 30050120350409 2026-08-18 13:45:52 1 2026-08-18 40