Browsing by Author "Wang, Jin-Yuan"

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A NEW MODEL AND HEURISTIC ALGORITHMS FOR THE MULTIPLE-DEPOT VEHICLE SCHEDULING PROBLEM
(2010-03-01)
Wang, Jin-Yuan
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Lin, Chih-Kang
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運輸與物流管理系註：原交通所+運管所
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Department of Transportation and Logistics Management
The multiple-depot vehicle scheduling problem (MDVSP) addresses the work of assigning vehicles to serve a given set of time trips with the consideration of certain requirements representing the market rules. Extensive studies in the literature address the MDVSP, but because of the complexity of the problem, the findings of those researchers are still not enough to represent real world situations in Taiwan. Formulation for the MDVSP typically contains the following assumptions: ( 1) the size of fleet or maximum number of available vehicles at each depot is known already, (2) all trip serving costs are usually simplified as a single term in the objective function, which fails to reflect public transit operator concerns, (3) the applied deadheading strategy is static less flexibility, (4) there is no discussion of differences of route change frequency in the problem. This paper presents a new MDVSP model to address the above issues. A greedy heuristic algorithm based on the divide-and-conquer technique is also proposed to solve the MDVSP effectively. Computational tests are performed on the Kinmen Bus Administration (KBA) and results demonstrate that the proposed new model and the greedy heuristic algorithm for the MDVSP are effective in solving real world problems.
Effects of real-time transit information services on the patronage behavior of passengers
(2015-12-01)
Wang, Jin-Yuan
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Wu, Tung-Ling
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運輸與物流管理系註：原交通所+運管所
;
Department of Transportation and Logistics Management
Previous research regarding customer relationship management has shown that acquiring a new customer costs much more than retaining an existing customer. Thus, from the perspective of transit agencies, maintaining existing passengers is a cost-effective strategy. This paper investigates the patronage behavior of bus passengers when real-time transit information (RTTI) is made available. Survival analysis based on survey data collected in Kaohsiung city, Taiwan, shows that the risk of RTTI users ceasing their use of transit was 32.9% that of RTTI non-users. Moreover, passengers using RTTI tended to use public transportation 0.15years longer than those who did not use RTTI. This study found that RTTI helps to retain passengers and provides concrete suggestions regarding RTTI promotion and bus business management for administrators.
MASS TRANSIT ROUTE NETWORK DESIGN USING GENETIC ALGORITHM
(2010-03-01)
Wang, Jin-Yuan
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Lin, Chih-Ming
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運輸與物流管理系註：原交通所+運管所
;
Department of Transportation and Logistics Management
The mass transit route network design (MTRND) problem is a bi-level NP-hard problem and difficult to solve for a global optimum solution. This paper proposes a genetic algorithm for solving the MTRND problem. In the proposed algorithm, two smart generating methodologies are formulated to achieve a better searching space for the initial feasible solution. An efficient network model, a gene repairing strategy and a redundancy checking mechanism were applied to minimize the computation time. Improved fitness function was embedded with the passenger assignment model and utilized to improve the quality of the solution. The proper combination of crossover operators and mutation operators was found for the MTRND. The proposed algorithm was tested with the current MRT network in Taipei as a specimen. Results indicate that the proposed algorithm is effective in solving real-world problems.
先進大眾運輸系統(APTS)整體研究發展計畫---公車行車安全管理系統之規劃及示範計畫(I)
(2005)
王晉元
;
Wang, Jin-Yuan
;
國立交通大學運輸研究中心
一般說來，公車拋錨或肇事等意外事故之發生原因，絕大部分與機件故障或駕駛行為不當有關。在預防機件故障部分，若汽車客運業者將車輛保修排程與機料庫存管理納入資訊化之管理資訊系統(MIS)中，將有助於保養維修工作之落實；此外自動車況偵測顯示技術可對引擎等機件進行診斷，當車況有問題時，可提供預先警示機制。在避免駕駛行為不當部分，藉助行車狀況即時紀錄技術（例如數位式行車紀錄器及錄影監視系統等），客運業者可對駕駛進行督導考核與肇責分析，對不當駕駛行為產生一定約束力；此外由於公車車體較長較寬，發生事故時傷亡往往也較嚴重，若藉助先進車輛控制及安全系統相關技術（例如自動駕駛輔助技術及預防碰撞技術等），可提供公車駕駛必要之協助，減少駕駛不當行為，使其得以順利在辨識度低、道路擁擠、天候惡劣或身體不適等狀況下安全駕駛。當有緊急事故發生時，若車上備有錄影監視系統，可將車內外發生之事故錄製下來，即時傳送至調管中心，加上寂靜式危急事故通報技術之協助，客運業者可緊急處置此突發狀況，保障駕駛及乘客安全。爰此，本研究主要探討如何結合ITS相關技術及運輸管理知識，來增進公車行車安全、減少意外事故發生或降低事故造成之衝擊，除分析已研發相關技術之成效、選取並整合有關技術，以確保在一定的合理成本下達到預期績效，並擇定合適車輛，進行公車行車安全管理系統示範計畫。
先進大眾運輸系統(APTS)整體研究發展計畫---公車行車安全管理系統之規劃及示範計畫(II)
(2006)
王晉元
;
Wang, Jin-Yuan
;
國立交通大學運輸研究中心
本計畫主要探討如何結合ITS相關技術及運輸管理知識，來增進公車行車安全、減少意外事故發生或降低事故造成之衝擊，辦理期程分為二年期，第一期(94年)已針對可應用於提昇公車行車安全之相關技術進行研析，並整合有關技術提出車上單元設備之開發雛型，第二期(95年)將擇定合適車輛，佈設相關設備，進行公車行車安全管理系統示範計畫，驗證本計畫相關規劃之妥適性及成效，作為未來推廣應用之參據。本年度的工作項目為：（一）擇定合適車輛，佈設相關設備，進行公車行車安全管理系統示範計畫，驗證本研究相關規劃之妥適性及成效，作為未來推廣應用之參據，（二）對示範計畫進行績效評估，（三）評估建置成本最適回收方式(例如從效益直接回收、反映於公車票價、由政府補助建置等)，（四）對於相關設備之採購及維運提出建議，（五）撰寫系統操作手冊，並辦理操作講習與技術移轉，（六）配合運研所需要，參加展覽及製作文宣。
先進科技運用於公共運輸系統之整體發展架構、指標與推動策略
(2010)
王晉元
;
Wang, Jin-Yuan
;
國立交通大學運輸研究中心
交通部為落實發展大眾運輸之政策，將先進大眾運輸系統(APTS)列為智慧型運輸系統(ITS)之重點發展項目，以提昇大眾運輸系統營運績效與服務品質，強化其競爭力。經過近10年來的努力，目前臺灣在APTS之發展上已有一定的具體成果。值此階段，實有必要對臺灣過去10年來發展APTS之成效加以評估並檢討推動過程中所遭遇到之問題，適度調整我國未來發展先進公共運輸系統之政策方向，同時掌握相關科技之最新發展狀況，並參酌先進國家發展先進公共運輸系統之現況與應用方向，規劃國內發展先進公共運輸系統更具前瞻性之發展架構、願景指標與推動策略。
北部區域科技走廊(南港軟體園區─新竹科學園區)即時動態路況資訊系統之開發與建置示範計畫
(2008)
王晉元
;
Wang, Jin-Yuan
;
國立交通大學運輸工程與管理學系
台北南港軟體工業園區與新竹科學園區間常因高速公路與地方聯絡道路即時資訊不足、旅行時間不確定，造成用路人之旅行績效不彰，亦間接地降低經濟之發展。究其原因，主要是因用路人無法有效地掌握路況，進而對旅次之出發時間、路徑選擇、乃至於旅行時間等皆無法進行有效之決策與預估。因此本示範計畫之目的為利用先進之運輸、通訊與資訊等科技，規劃路況偵測與資訊收發系統，發展旅行時間預測模式，結合個人資訊收發系統以建置智慧型運輸走廊交通動態資訊系統，並將高快速公路與都會區交通資訊與控制介面進行監控機制之整合，以期透過高速公路資訊與都市道路資訊系統之結合應用，使用路人行駛於運輸走廊，能獲得更精確、更廣泛之交通資訊，藉以導引用路人充分利用替代道路以避開壅塞路段，達到提高路網使用效率目的或在出發時即選擇適當的替選運具。