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008 250398 th eng
035 _a.b10767241
099 9 _aAIT Thesis no. 1269
100 0 _aSophon Wathanaoran
245 1 0 _aWarrants for signal coordination
260 _aBangkok :
_bAsian Institute of Technology,
_c1978
300 _a128 p.
490 1 _aThesis ;
_vno. 1269
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand
502 _aThesis (M.Eng.) - Asian Institute of Technology, 1978
520 _aThis study is aimed at the determination of the conditions under which the coordination of signals are warranted. Robertson's platoon dispersion model was used in a simulation exercise to study the behaviour of a platoon movement between two intersections and through several intersections. The study was made by varying the general f actors of traffic flow, such as the discharge rates, cycle lengths, green splits, speeds, signal spacings, and offsets. These were fed into the computer as data. A simple relationship of flow, the average speed of vehicles in the platoon, and the distance to second intersection was found for the case of coordination of two intersections. The warrant for coordination of two intersections was, then, established from this relationship, and has the form of: The warrant flow = Kd , veh/h (through traffic) V where Kd = constant for a particular distance to the second intersection and for a specified acceptable percentage of flow passing the second intersection, veh-km/h2 V = average speed of vehicles in the platoon, km/h. For coordination of several intersections, each pair of intersections should satisfy the warrant for coordination of two intersections. A route in Bangkok was selected as an illustration. The present level of sophistication of equipment for signal coordination was studied.
650 0 _aTraffic signs and signals
_zThailand
_zBangkok
650 0 _aTraffic engineering
_zThailand
_zBangkok
700 1 _aJones, John Hugh,
_eChairperson
700 1 _aAndreassend, David C.,
_eCo-Chairperson
700 1 _aMarler, Nicholas W.,
_eExamination Committee
710 2 _aGovernment of Thailand,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. 1269
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B22883
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