Control of personal rapid transit systems

Anderson, Jordan

doi:10.1002/atr.5670320107

Cited by 35 publications

(16 citation statements)

References 10 publications

(3 reference statements)

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“…As soon as a station has a deficit of idle vehicles, the dispatch system will send to the station the nearest idle vehicle from a station that has a surplus of empty waiting vehicles. This idea of maintaining a target number of idle vehicles at each station was used by Anderson in [40]. We will apply this basic rule when the system receives new passenger requests or when new vehicles at a station become empty.…”

Section: Management Strategiesmentioning

confidence: 99%

Dealing with the Empty Vehicle Movements in Personal Rapid Transit System with Batteries Constraints in a Dynamic Context

Fatnassi

Chebbi

Chaouachi

2017

Journal of Advanced Transportation

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The Personal Rapid Transit is a new emergent transportation tool. It relies on using a set of small driverless electric vehicles to transport people on demand. Because of the specific on-demand characteristic of the Personal Rapid Transit system, many Personal Rapid Transit vehicles would move empty which results in a high level of wasted transportation capacity. This is enhanced while using Personal Rapid Transit vehicles with limited electric battery capacity. This paper deals with this problem in a real time context while minimizing the set of empty vehicle movements. First, a mathematical formulation to benchmark waiting time of passengers in Personal Rapid Transit systems is proposed. Then, a simulation model that captures the main features of the Personal Rapid Transit system is developed. A decision support system which integrates several real time solution strategies as well as a simulation module is proposed. Our dispatching strategies are evaluated and compared based on our simulation model. The efficiency of our method is tested through extensive test studies.

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Section: Management Strategiesmentioning

confidence: 99%

Dealing with the Empty Vehicle Movements in Personal Rapid Transit System with Batteries Constraints in a Dynamic Context

Fatnassi

Chebbi

Chaouachi

2017

Journal of Advanced Transportation

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“…The problem of moving idle vehicles to meet targets with minimum empty vehicle running time is a classical transportation problem. The idea of maintaining a target number of vehicles at each station is common in the PRT literature (Andréasson 1998, Anderson 1998. The decision on which vehicles to move is typically made according to rules that can be viewed as approximation algorithms for the transportation problem.…”

Section: New Evr Algorithm: Dynamic Transportation Problem (Dtp)mentioning

confidence: 99%

Proactive empty vehicle redistribution for personal rapid transit and taxis

Lees-Miller

Wilson

2012

Transportation Planning and Technology

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The empty vehicle redistribution (EVR) problem is to decide when and where to move empty vehicles in a Personal Rapid Transit or taxi system. These decisions are made in real time by an EVR algorithm. A reactive EVR algorithm moves empty vehicles only in response to known requests; in contrast, a proactive EVR algorithm moves empty vehicles in anticipation of future requests. This paper describes two new proactive EVR algorithms, called Sampling and Voting (SV) and Dynamic Transportation Problem (DTP), that move empty vehicles proactively based on demand estimates from historical data. It also develops methods for assessing the performance of EVR algorithms absolutely in terms of both throughput and passenger waiting times. In simulation tests, the proposed algorithms provide lower passenger waiting times than other algorithms in the literature, and proactive movement of empty vehicles significantly reduces waiting times, usually with a modest increase in empty vehicle travel.

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“…Concerning the commercial applications the most highly developed systems and therefore the most cited are SkyWeb Express [5] (Taxi 2000Corporation), ULTRA [6] (Advanced Transportation Systems), Vectus [9] (Vectus PRT), which are integral PRT solutions, and FROG [10] (2getthere) which is a control system designed to work with any transportation system which can model the environment as a grid. All of these systems have been developed into real testing platforms, moreover, due to the good results gathered the ULTRA project will soon open to users at the Heathrow airport [6].…”

Section: Brief State-of-the-artmentioning

confidence: 99%

“…Pdo ¢ Pdo-tPs«, no E Vm with no ' * n- (5) Analogous to biological systems, the reinforcement value r can be interpreted as the pheromone evaporation rate [14]. Implicit control can then influence the PRT routing in two ways:…”

Section: Environmental Om Description and Implicit Controlmentioning

confidence: 99%

Personal rapid transit in open control framework

Raileanu¹,

Sallez²,

Berger³

et al. 2009

2009 International Conference on Computers &Amp; Industrial Engineering

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Since last decade, the use of safe, comfortable and ecologic vehicles to operate in urban context as an alternative to private car has been required by authorities. Several projects have emerged on on-demand transport with new automated vehicles known as Cybercars or PRTs. In the context of intelligent transportation, where vehicles can be seen as autonomous and decisional entities composing a self-organized system to be controlled, this paper presents the open-control paradigm and gives an example of its instantiation with stigmergic scheme. The open-control concept, developed in our Lab (LAMIH), exhibits the classic explicit control, as well as an innovative type of control called implicit control. The implicit control allows system entities to be influenced via an Optimization Mechanism (OM). After introducing the open-control paradigm, we illustrate one possible implementation based upon a stigmergic approach and applied to a PRTs network. Implementation architecture and first experimental results are reported.

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Control of personal rapid transit systems

Cited by 35 publications

References 10 publications

Dealing with the Empty Vehicle Movements in Personal Rapid Transit System with Batteries Constraints in a Dynamic Context

Dealing with the Empty Vehicle Movements in Personal Rapid Transit System with Batteries Constraints in a Dynamic Context

Proactive empty vehicle redistribution for personal rapid transit and taxis

Personal rapid transit in open control framework

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