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008			260515s20269999th u ms tm 000 eng d
035			_a.b12502856
099		9	_aAIT Thesis no.TE-26-01
100	1		_aKrissada Pongprasert
245	1	0	_aAssessment of traffic performance and safety for non-exclusive motorcycle lanes on multi-lane highways in Thailand
260			_aPathum Thani, Thailand : _bAsian Institute of Technology, _c2026
300			_a135 leaves : _bill.+ _e1 online resource
490	1		_aThesis; _vno. TE-26-01
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Transportation Engineering
502			_aThesis (M.Eng.) - Asian Institute of Technology, 2026
520			_aRoad traffic injuries are a major global issue. In Thailand, fatalities remain high, with a death rate of 25.9 per 100,000 population and about 17,000 deaths per year, of which around 80% involve motorcycle users. One potential approach is the implementation of Non-Exclusive Motorcycle Lanes (NEMCL), which separate motorcycles from mixed traffic. To improve road safety and evaluate the effectiveness of NEMCL, this study examines the impacts on traffic performance and safety. The analysis was conducted using a microsimulation model developed in PTV VISSIM based on data from two study locations, Highway 3414 and Highway 3310 in Nakhon Pathom Province. The model was calibrated and validated using traffic volume and speed data, with the GEH statistic used for traffic volume and the Root Mean Square Error (RMSE) for speed. Safety performance was evaluated using the Surrogate Safety Assessment Model (SSAM). The results show that NEMCL improves traffic safety by reducing conflicts, particularly for motorcycles, but reduces traffic performance, resulting in lower speeds and higher delay and travel time. In addition, lane width has a limited effect under no-overtaking conditions, although wider lanes can improve safety. When overtaking is allowed, wider lanes improve both performance and safety, with a width of 3.5 m providing results closest to the base condition. Access level reduces the effectiveness of NEMCL, as increasing access density lowers both performance and safety due to frequent traffic interruptions. Under two-way operation, changes in lane width have only a small effect on performance, and overall performance is slightly lower than in one-way operation. It also changes conflict patterns, with fewer rear-end conflicts but more head-on conflicts, which represent a higher level of risk. Approaching distance strongly influences safety. Short distances (below 30 m) lead to higher conflict occurrence, while longer distances improve safety, with 200 m providing the lowest number of conflicts. In conclusion, NEMCL can improve motorcycle safety on multilane highways, but its effectiveness depends on appropriate design and operational conditions. These findings can support the development of practical design guidelines for motorcycle lanes in Thailand.
650		0	_aTraffic accidents _zThailand
650		0	_aTraffic safety _zThailand
650		0	_aHigh occupancy vehicle lanes _zThailand
700	0		_aKunnawee Kanitpong, _eChairperson
700	1		_aBhatt, Ayushman, _eExamination Committee
700	0		_aAmpol Karoonsoontawong, _eExamination Committee
710	2		_aOffice of the Civil Service Commission, Thailand, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis; _vno. TE-26-01
856	4	0	_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B24130
907			_a.b12502856 _bmnarc _ca
902			_a260519
998			_b0 _c260518 _dm _eh _fa _g0
945			_lmnarc
942			_c67
909			_aBarcode : - _bCREATED : 2026-05-15 _cRECORD # : i13599768 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
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