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1.
  • Browne, Michael, et al. (författare)
  • London 2012: changing delivery patterns in response to the impact of the Games on traffic flows
  • 2014
  • Ingår i: International Journal of Urban Sciences. - 1226-5934. ; 18:2, s. 244-261
  • Tidskriftsartikel (refereegranskat)abstract
    • The paper addresses road freight transport operations during the London Olympic and Paralympic Games in 2012. It presents work carried out prior to the Games to understand pre-Games patterns of freight deliveries in London (for both light and heavy goods vehicles) and the results of modelling work carried out to assess the likely impacts of the Games road restrictions on freight operations. The modelling results indicated that increases in total hours travelled carrying out collection and delivery work would range from 1.4% to 11.4% in the six sectors considered. The results suggested increases in hours travelled in excess of 3.5% in four of the six sectors modelled. The possible actions that could be taken by organizations to reduce these negative impacts were also modelled and the results indicated that such actions would help to mitigate the impact of the road restrictions imposed on operators during the Games. The actual impacts of the 2012 Games on transport both in general terms and specifically in terms of freight transport are also discussed, together with the success of the actions taken by Transport for London (TfL) to help the road freight industry. The potential freight transport legacy of the London 2012 Games in terms of achieving more sustainable urban freight transport is considered and the steps being taken by TfL to help ensure that such a legacy can be realized are discussed. Such steps include policy-makers continuing to collaborate closely with the freight industry through the ‘London Freight Forum’, and TfL's efforts to encourage and support companies revising their delivery and collection times to the off-peak; improving freight planning in the design and management of TfL-funded road schemes; electronic provision of traffic information by TfL to the freight industry, and the further development of freight journey planning tools.
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2.
  • Kourtit, K., et al. (författare)
  • The urban data deluge : challenges for smart urban planning in the third data revolution
  • 2020
  • Ingår i: International Journal of Urban Sciences. - Routledge. - 1226-5934.
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>Effective urban planning is increasingly affected and governed by the current information society. This paper argues that the so-called third data revolution creates unprecedented challenges for sustainable city policy in the digital age. Three types of data revolutions are distinguished in this paper. The nowadays popular notion of smart cities may be helpful to enhance the cognitive quality of urban policy-making, but leads also to new issues on complex data handling in the modern age of social media and digital information systems. The various issues at stake are outlined in this paper, while this study is concluded with a sketch of the contours of a so-called smart city policy fly-wheel, so as to demonstrate that the urban fabric–also in a smart city context–is always work in progress, with a view to the achievement of sustainable development goals. Highlights The birth of the smart cities concept originates from the third data revolution. Sustainable city policy calls for smart data management. In the ‘New Urban World’ systematic data warehousing is needed. The tension between closed administrative city borders and open data systems can be bridged. The attainment of sustainable development goals (SDGs) presupposes smart city policy. </p>
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3.
  • Posada, Marcus, et al. (författare)
  • A metaheuristic for evaluation of an integrated special transport service
  • 2020
  • Ingår i: INTERNATIONAL JOURNAL OF URBAN SCIENCES. - ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD. - 1226-5934.
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>This work concerns evaluation of integrated demand responsive services, in which certain parts of the passengers door-to-door journeys are served by fixed route public transport. The purpose of combining a special transport service with a fixed route service is to reduce the high, publicly subsidized, operational costs of the special transport service. To be able to recommend in which situations, or areas, it is beneficial to use an integrated service we present a metaheuristic for solving the routing problem in such a service. The metaheuristic can be implemented as part of an evaluation tool for policy makers and officials, providing insights into the effects of an integrated demand responsive service compared to a non-integrated. The metaheuristic is based on the adaptive large neighbourhood search (ALNS) framework. It is applied to a data set from a real-world, rural, demand responsive special transport service and the fixed route service available in the area. The objective used in our heuristic is to minimize the distance driven by the demand responsive vehicles. The distance driven is strongly related to the operational cost of the service. Our tests show that the distance driven by the demand responsive vehicles is reduced by 16%, giving a substantial cost reduction for the special transport service in the given area. Highlights Evaluation of integrated demand responsive service Combining special transport with a fixed route service to reduce operational costs Metaheuristic, based on the adaptive large neighbourhood search (ALNS) framework Comparing integrated service to non-integrated</p>
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