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Sustainable mobility is not only a technological question, automotive technology will be part of the solution combined with a paradigm shift from car ownership to vehicle usage, and the application of Information and Communication Technologies (ICT) making possible for a user to have access to a mobility service from anywhere to anywhere at any time. Multiple Passenger Ridesharing and its variants look one of the more promising emerging mobility concepts. However, implementations of these systems accounting specifically for time dependencies, and time windows reflecting users’ needs raise challenges in terms of real-time fleet dispatching and dynamic route calculation. This paper analyzes and evaluates both aspects by microscopic traffic simulation emulating real-time traffic conditions and a real traffic information system, and interacting with a Decision Support. The simulation framework has been implemented in a model of Barcelona’s Central Business District. The paper presents and discusses the achieved results.

The main traffic models, either for planning or operational purposes, use as major data input Origin-Destination (OD) trip matrices describing the patterns of traffic behavior across the network. OD matrices become in this way a critical requirement of Advanced Traffic Management or Information Systems supported by Dynamic Traffic Assignment models. However, as far as OD matrices are not directly observable, the current practice consist of adjusting an initial or seed matrix from link flow counts provided by an existing layout of traffic counting stations. The adequacy of the detection layout strongly determines the quality of the adjusted OD. Usual approaches to the Detection Layout problem assume that detectors are located at network links but some of the Information and Communication Technologies specially those based on the detection of the electronic signature of on board devices, as for example Bluetooth devices, allow the location of sensor at intersections. This paper proposes a reformulation of the link detection layout problem adapting the classical set covering approaches with side constraints and solving it efficiently by a tabu search metaheuristic. For the intersection layout covering problem a reformulation is proposed in terms of a node covering problem with side constraints that for practical purposes can be efficiently solved with standard professional solvers.

Sustainable mobility is not merely a technological question. While automotive technology will be part of the solution, it will also be combined with a paradigm shift from car ownership to vehicle usage, which itself will be facilitated by the application of Information and Communication Technologies that make it possible for a user to have access to a mobility service from anywhere to anywhere at any time. Multiple Passenger Ridesharing and its variants appear to be one of the promising mobility concepts that are emerging. However, in implementing these systems while accounting specifically for time dependencies and time windows that reflect user needs, challenges are raised in terms of real-time fleet dispatching and dynamic route calculation. This paper analyzes and evaluates both aspects through microscopic simulation emulating real-time traffic information while also interacting with a Decision Support System. The paper presents and discusses the obtained results for a Barcelona’s Central Business District model. The obtained results prove the potential feasibility of the mobility concept.

En els últims anys ha crescut la preocupació per dur un estil de vida saludable i tenir una alimentació equilibrada. Alhora l'ús de les tecnologies mòbils s'ha disparat entre la població i cada vegada ofereixen més prestacions als usuaris. Dins d'aquest context, intentarem crear una eina que ajudi als usuaris a planificar una dieta equilibrada de manera còmode i eficient aprofitant els avantatges de les tecnologies mòbils. Per fer-ho, crearem un model d'optimització que generi un menú equilibrat per a una setmana i el resoldrem mitjançant un solver comercial. També desenvoluparem una aplicació nativa per a dispositius mòbils iOS que, com a funcionalitat principal, indiqui als usuaris un menú equilibrat adaptat a les seves necessitats. Per tal de mostrar el menú als usuaris, plantejarem i implementarem un mètode per resoldre el model d'optimització dins l'aplicació.

The Information and Communications Technologies penetration in the transport sector has led to the emergence of new mechanisms for attracting trac data. The importance of nding the best location for these mechanisms into the transport network leads to the use of mathematical optimization approaches to this problem. Now the challenge is to solve these models without using commercial solvers. Thus, the development of heuristic methods that use the structure of the problem to obtain near optimal solutions using fewer resources is one of the highest priorities.