Now showing items 1-20 of 42

  • Agent based modeling for simulating taxi services[: case study in Barcelona] 

    Salanova Grau, Josep Maria; Estrada Romeu, Miguel Ángel (Elsevier, 2015)
    Conference report
    Open Access
    Taxi services account for a significant part of the daily trips in most of cities around the world. Due to the fact that most of the taxi markets are regulated by a central authority there is the need for developing tools ...
  • Agent based modeling for simulation of taxi services 

    Salanova Grau, Josep Maria; Estrada Romeu, Miguel Ángel; Mitsakis, Evangelos; Stamos, Iraklis (2013-12)
    Article
    Restricted access - publisher's policy
    This paper presents an agent based model for simulating taxi services in urban areas. The three operation modes (hailing, stand and dispatching) are modeled and tested in the Sioux Falls network. Taxi models presented in ...
  • Agent-based simulation framework for the taxi sector modeling 

    Salanova Grau, Josep Maria; Estrada Romeu, Miguel Ángel; Tzenos, Panagiotis; Aifandopoulou, G. (Elsevier, 2018)
    Conference report
    Open Access
    Taxi services account for a significant part of the daily trips in most cities around the world. These services are regulated by a central authority, which usually monitors the performance of the taxi services provision ...
  • Aggregated modeling of urban taxi services 

    Salanova Grau, Josep Maria; Estrada Romeu, Miguel Ángel; Amat Bertran, Carles (2014)
    Conference report
    Open Access
    Various models have been developed for calculating the variables that characterize the taxi services in urban regions and defining the principal policy measures such as fleet size, fares or available operational modes. ...
  • A mathematical approach and review of the modeling of taxi services 

    Estrada Romeu, Miguel Ángel; Salanova Grau, Josep Maria (2012)
    Conference report
    Restricted access - publisher's policy
    This paper presents a mathematical model for the estimation of the key performance indicators of the taxi markets in urban areas. These key parameters are basically the demand and supply for taxi services, the waiting time ...
  • Análisis de estrategias eficientes en la logística de distribución de paquetería 

    Estrada Romeu, Miguel Ángel (Universitat Politècnica de Catalunya, 2007-12-18)
    Doctoral thesis
    Open Access
    La tesis doctoral propone una nueva metodología de optimización del problema de diseño rutas de distribución de muchos orígenes a muchos destinos en paquetería. La optimización minimiza los costes de transporte del sistema ...
  • An evaluation of urban consolidation centers through continuous analysis with non-equal market share companies 

    Roca Riu, Mireia; Estrada Romeu, Miguel Ángel; Fernández Aréizaga, Elena (2015)
    Conference report
    Open Access
    This paper analyzes the logistic cost savings caused by the implementation of Urban Consolidation Centers (UCC) in a dense area of a city. In these urban terminals, freight flows from interurban carriers are consolidated ...
  • Assessment of taxi sector efficiency and profitability based on continuous monitoring and methodology to review fares 

    Amat Bertran, Carles; Estrada Romeu, Miguel Ángel; Ortigosa Marin, Javier (2014)
    Conference report
    Restricted access - publisher's policy
    The taxi sector presents many challenges to adequately serve the demand while maximising efficiency and profitability and minimising externalities. Many authors have dealt with the ‘taxi industry’ by modelling and forecasting ...
  • Assessment of the public transportation supply in a local level 

    Campos Cacheda, Jose Magin; Alsina, Guillem; Estrada Romeu, Miguel Ángel (2011)
    Conference lecture
    Restricted access - publisher's policy
    This article presents new methodology for assessing the quality provided by urban surface transit systems in terms of comfort, speed and coverage. A set of robust indicators are presented to measure how transit supply ...
  • Bus control strategies in corridors with signalized intersections 

    Estrada Romeu, Miguel Ángel; Mension, Josep; Aymamí, Josep M; Torres, Laura (2016-10)
    Article
    Open Access
    This paper proposes a new dynamic bus control strategy aimed at reducing the negative effects of time-headway variations on route performance, based on real-time bus tracking data at stops. In routes with high demand, any ...
  • Bus network structure and mobility pattern: a monocentric analytical approach on a grid street layout 

    Badia Rodríguez, Hugo; Estrada Romeu, Miguel Ángel; Robusté Antón, Francesc (2016-11)
    Article
    Open Access
    This study discusses which transit network structure is the best option to serve urban mobility. As a consequence of the evolution of urban form, cities have undergone a process of dispersion of their activities that has ...
  • Designing new models for energy efficiency in urban freight transport for smart cities and its application to the Spanish case 

    Navarro, Carolina; Roca Riu, Mireia; Furió, S.; Estrada Romeu, Miguel Ángel (Elsevier, 2015)
    Conference report
    Open Access
    Considering that the transport sector is responsible for 30% of the CO2 emissions in the EU, reaching up to 40% in urban areas, the efforts for technological improvements and innovation in transportation have been increasing ...
  • Disseny eficient de xarxes de transport públic col·lectiu en zones urbanes 

    Estrada Romeu, Miguel Ángel; Robusté Antón, Francesc; Badia Rodríguez, Hugo (Universitat Politècnica de Catalunya. Escola Tècnica Superior d'Enginyers de Camins Canals i Ports de Barcelona, 2011-11-16)
    Conference lecture
    Open Access
    Aquest treball presenta i valida un mètode de disseny de xarxes de transport públic d’altes prestacions. El mètode proposa diferents esquemes conceptuals de xarxes per idealitzacions geomètriques d'una ciutat particular, ...
  • Effect of variable bus speeds on bus network design 

    Foletta, Nicole; Estrada Romeu, Miguel Ángel; Roca-Riu, Mireia; Martí, P (2010)
    Article
    Open Access
    This article provides a methodology for solving the bus network design problem, covering network design and frequency setting and taking into consideration that commercial speeds of buses vary depending on the aggregated ...
  • Estimación de la longitud óptima de la red de autobuses considerando los efectos sobre el vehículo privado 

    Amat, Jordi; Estrada Romeu, Miguel Ángel; Robusté Antón, Francesc; Badia Rodríguez, Hugo (Editorial Universidad de Granada, 2012)
    Conference report
    Restricted access - publisher's policy
    El presente trabajo trata la optimización del diseño de redes de autobús de altas prestaciones teniendo en cuenta los costes de los usuarios y el operador del bus junto con los costes del vehículo privado. Investigaciones ...
  • Estratègies de distribució de mercaderies per fomentar una mobilitat més sostenible 

    Estrada Romeu, Miguel Ángel; Campos Cacheda, Jose Magin (2017-11)
    Article
    Restricted access - publisher's policy
    L’objectiu d’aquest article és identificar si les mesures innovadores sobre la DUM (distribució urbana de mercaderies) que estan plantejant les diferents administracions són compatibles amb les relacions econòmiques entre ...
  • Formulas for Estimating Average Distance Traveled in Vehicle Routing Problems in Elliptic Zones 

    Robusté Antón, Francesc; Estrada Romeu, Miguel Ángel; López Pita, Andrés (Transportation Research Board of the National Academies, 2004)
    Article
    Open Access
    This paper defines some compact expressions to evaluate the average distance traveled in VRP problems in circular and elliptic zones. These formulas have been carried out empirically from the results obtained by the application ...
  • Headway adherence: detection and reduction of the bus bunching effect 

    Mension, Josep; Estrada Romeu, Miguel Ángel (2016)
    Conference report
    Restricted access - publisher's policy
    We propose a work on detection and reduction of the bus bunching effect, which appears when two or more buses run one after the other and causes inefficiency, decrease in transport capacity and a loss of service quality.
  • Improving bus travel times with passive traffic signal coordination 

    Estrada Romeu, Miguel Ángel; Trapote Barreira, César; Roca Riu, Mireia; Robusté Antón, Francesc (2009)
    Conference report
    Restricted access - publisher's policy
    A simulation optimization model is outlined: traffic signal offsets in intersections are calculated to minimize the travel time of bus users in an urban network. The model considers a passive signal priority system and ...
  • Innovación en la DUM y en la gestión de servicios urbanos 

    Estrada Romeu, Miguel Ángel (2010)
    Conference report
    Restricted access - publisher's policy