Search or filter publications

Filter by type:

Filter by publication type

Filter by year:

to

Results

  • Showing results for:
  • Reset all filters

Search results

  • JOURNAL ARTICLE
    Achurra-Gonzalez PE, Novati M, Foulser-Piggott R, Graham DJ, Bowman G, Bell MGH, Angeloudis Pet al., 2019,

    Modelling the impact of liner shipping network perturbations on container cargo routing: Southeast Asia to Europe application

    , ACCIDENT ANALYSIS AND PREVENTION, Vol: 123, Pages: 399-410, ISSN: 0001-4575
  • JOURNAL ARTICLE
    Trompet M, Anderson RJ, Graham DJ, 2018,

    Improved understanding of the relative quality of bus public transit using a balanced approach to performance data normalization

    , TRANSPORTATION RESEARCH PART A-POLICY AND PRACTICE, Vol: 114, Pages: 13-23, ISSN: 0965-8564
  • JOURNAL ARTICLE
    Barron A, Canavan S, Anderson R, Cohen Jet al., 2018,

    Operational Impacts of Platform Doors in Metros

    , Transportation Research Record, ISSN: 0361-1981

    © 2018, National Academy of Sciences: Transportation Research Board 2018. Platform doors are increasingly installed by metros, primarily to improve safety. However, they have the potential for both positive and negative operational impacts, mostly by affecting dwell times at stations. Using data from the CoMET and Nova international metro benchmarking consortia of 33 metro systems, this paper seeks to understand and quantify these operational impacts. Overall, platform doors have a net negative impact on dwell times, leading to between 4 and 15 s of extra time per station stop. This is due to the additional time required for the larger doors to open and close, slower passenger movements due to the additional distance between platforms and trains, and, most importantly, extended departure delays after both sets of doors are closed caused by the need to ensure safety (that no one is trapped in the gap between the two sets of doors). This is a particular problem in mainland China, where metros conduct manual safety checks that require drivers to step out of trains onto platforms. However, despite longer dwell times, platform doors have a net positive impact on metro operations, largely due to the many safety benefits that also reduce delays and thereby improve service performance. There are also potential benefits regarding energy and ventilation. To mitigate the negative impacts, metros should seek to refine procedures and improve technology to reduce dwell time delays caused by platform doors. Reducing or eliminating these extra delays are essential to delivering efficient service and maximum capacity, provided that safety can be assured.

  • JOURNAL ARTICLE
    Barzin S, D'Costa S, Graham DJ, 2018,

    A pseudo - panel approach to estimating dynamic effects of road infrastructure on firm performance in a developing country context

    , REGIONAL SCIENCE AND URBAN ECONOMICS, Vol: 70, Pages: 20-34, ISSN: 0166-0462
  • JOURNAL ARTICLE
    Melo PC, Graham DJ, 2018,

    Transport-induced agglomeration effects: Evidence for US metropolitan areas

    , REGIONAL SCIENCE POLICY AND PRACTICE, Vol: 10, Pages: 37-47, ISSN: 1757-7802
  • JOURNAL ARTICLE
    Hoercher D, Graham DJ, 2018,

    Demand imbalances and multi-period public transport supply

    , TRANSPORTATION RESEARCH PART B-METHODOLOGICAL, Vol: 108, Pages: 106-126, ISSN: 0191-2615
  • JOURNAL ARTICLE
    Horcher D, Graham DJ, Anderson RJ, 2018,

    The Economic Inefficiency of Travel Passes Under Crowding Externalities and Endogenous Capacity

    , JOURNAL OF TRANSPORT ECONOMICS AND POLICY, Vol: 52, Pages: 1-22, ISSN: 0022-5258
  • JOURNAL ARTICLE
    Horcher D, Graham DJ, Anderson RJ, 2018,

    The economics of seat provision in public transport

    , TRANSPORTATION RESEARCH PART E-LOGISTICS AND TRANSPORTATION REVIEW, Vol: 109, Pages: 277-292, ISSN: 1366-5545
  • JOURNAL ARTICLE
    Canavan S, Graham DJ, Anderson RJ, Barron Aet al., 2018,

    Urban Metro Rail Demand: Evidence from Dynamic Generalized Method of Moments Estimates using Panel Data

    , Transportation Research Record, ISSN: 0361-1981

    © National Academy of Sciences: Transportation Research Board 2018. This paper estimates elasticities of demand for metro services with respect to fares, income, quality of service, population and network length. Data for 32 world metro systems covering the period from 1996 to 2015 are analyzed within a dynamic panel data specification. Three key contributions are made. First, we collate a database for estimation that is more extensive than that used in previous studies. Second, the quality of the data we have available allows us to more accurately represent quality of service than has been possible previously. Lastly, we estimate and compare two different measures of demand. Our analysis finds a statistically significant negative fare elasticity of −0.25 in the long run for a passenger km specified model and −0.4 in the long run for a passenger journey specified model, and a positive long run income elasticity of 0.17 and 0.18 for the passenger km and passenger journey models respectively. Regarding quality of service, we find positive long run elasticities of 0.56 and 0.47 for the passenger km and passenger journey models respectively. Income levels, population, and the size of the network are also found to be statistically significant and positive in nature. The results suggest passenger km and passenger journeys will increase more in response to changes in service (here represented by increased capacity) than to changes in fares, with the difference in elasticities of service and fares being more pronounced for passenger km.

  • JOURNAL ARTICLE
    Carbo JM, Graham DJ, Anupriya, Casas D, Melo PCet al., 2018,

    Evaluating the causal economic impacts of transport investments: evidence from the Madrid–Barcelona high speed rail corridor

    , Journal of Applied Statistics, ISSN: 0266-4763

    © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group. This paper evaluates economic impacts arising from the introduction of high-speed rail (HSR) between Madrid and Barcelona. Using difference-in-differences estimation we estimate an average treatment effect for provinces with stops on the HSR line of 2.4% for economic output, 3.3% for numbers of firms, and 1.1% for labour productivity. We complement our DID results with a synthetic control analysis for Lleida and Tarragona, two provinces that we argue were assigned HSR stations largely due to their incidental location. We find that both the number of firms and labour productivity are substantially higher in these provinces than in their synthetic counterparts.

  • CONFERENCE PAPER
    Achurra Gonzalez PE, Angeloudis P, Hu S, Zavitsas K, Graham DJet al.,

    Modelling the impact of infrastructure developments on the resilience of intermodal container transport networks: One-Belt-One-Road Case study

    , 7th International Conference on Logistics and Maritime Systems
  • REPORT
    Mundy D, Trompet M, Cohen J, Graham Det al., 2017,

    The Identification and Management of Bus Priority Schemes; A Study of International Experiences and Best Practices

    Priority measures for bus services can deliver significant benefits both for passengers and the operator. For example, green light priority or the conversion of road space to dedicated bus lanes can deliver journey time (variability/predictability) benefits thereby improving both quality of service and operational efficiency. This study investigates how bus priority schemes are identified, selected and managed in 14 different cities across Asia, Australia, Europe and North America. The study reviews the decision making processes, including associated input from bus operators, involved in identifying necessary bus schemes. The study provides examples of succesful and unsuccessful bus priority schemes and methods of bus priority enforcement are explored to establish interesting and successful ways to ensure bus priority measures can be effective. This report may be useful to different stakeholders experiencing difficulties with bus priority selection, implementation and management, such as city/ borough governments, road authorities, bus operators, passenger groups, police, and other organisations.

  • JOURNAL ARTICLE
    Li H, Graham DJ, Liu P, 2017,

    Safety effects of the London cycle superhighways on cycle collisions

    , ACCIDENT ANALYSIS AND PREVENTION, Vol: 99, Pages: 90-101, ISSN: 0001-4575
  • CONFERENCE PAPER
    Achurra Gonzalez PE, Angeloudis P, Zavitsas K, Niknejad SA, Graham DJet al.,

    A Quantitative Framework for Assessment of Network Vulnerability in Liner Shipping Networks

    , Transportation Research Board 96th Annual Meeting
  • JOURNAL ARTICLE
    Melo PC, Graham DJ, Levinson D, Aarabi Set al., 2017,

    Agglomeration, accessibility and productivity: Evidence for large metropolitan areas in the US

    , URBAN STUDIES, Vol: 54, Pages: 179-195, ISSN: 0042-0980
  • JOURNAL ARTICLE
    Mohammad SI, Graham DJ, Melo PC, 2017,

    The effect of the Dubai Metro on the value of residential and commercial properties

    , JOURNAL OF TRANSPORT AND LAND USE, Vol: 10, Pages: 263-290, ISSN: 1938-7849
  • JOURNAL ARTICLE
    Morse L, Trompet M, Barron A, Graham DJet al., 2017,

    Development of a Key Performance Indicator System to Benchmark Relative Paratransit Performance

    , TRANSPORTATION RESEARCH RECORD, Pages: 1-8, ISSN: 0361-1981
  • JOURNAL ARTICLE
    Piner D, Condry B, 2017,

    International best practices in managing unplanned disruption to suburban rail services

    , WORLD CONFERENCE ON TRANSPORT RESEARCH - WCTR 2016, Vol: 25, ISSN: 2352-1465
  • JOURNAL ARTICLE
    Hoercher D, Graham DJ, Anderson RJ, 2017,

    Crowding cost estimation with large scale smart card and vehicle location data

    , TRANSPORTATION RESEARCH PART B-METHODOLOGICAL, Vol: 95, Pages: 105-125, ISSN: 0191-2615
  • JOURNAL ARTICLE
    Li H, Graham DJ, 2016,

    Heterogeneous treatment effects of speed cameras on road safety

    , ACCIDENT ANALYSIS AND PREVENTION, Vol: 97, Pages: 153-161, ISSN: 0001-4575
  • JOURNAL ARTICLE
    Brage-Ardao R, Graham DJ, Anderson RJ, 2016,

    Determinants of rolling stock maintenance cost in metros

    , PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART F-JOURNAL OF RAIL AND RAPID TRANSIT, Vol: 230, Pages: 1487-1495, ISSN: 0954-4097
  • JOURNAL ARTICLE
    Li H, Graham DJ, 2016,

    Quantifying the causal effects of 20 mph zones on road casualties in London via doubly robust estimation

    , ACCIDENT ANALYSIS AND PREVENTION, Vol: 93, Pages: 65-74, ISSN: 0001-4575
  • CONFERENCE PAPER
    Achurra Gonzalez PE, Angeloudis P, Zavitsas K, Niknejad SA, Graham DJet al.,

    Attacker-defender modelling of transport vulnerability in maritime logistics corridors

    , 2nd International Workshop on Maritime Flows and Networks
  • JOURNAL ARTICLE
    Karathodorou N, Condry BJ,

    Choosing Optimal Reliability Measures for Passenger Railways: Different Measures for Different Purposes

    , Transportation Research Record, ISSN: 0361-1981

    Reliability is one of the top factors influencing customer satisfaction with passenger rail services. It affects the level of demand for the service as passengers place a large negative value on delays. This matters to service providers, as it drives the fare revenue, and to policy makers as it influences mode share. This paper comprises a review of literature on reliability measurement in public transport, the results of a global survey of suburban rail operators and an assessment of the value of specific reliability measures. Reliability measures are typically required for three distinct purposes: internal measurements to manage the service, reporting to governments/authorities or franchisors for regulatory purposes and external reporting to customers and the media. Different measures may be optimal for each of these purposes and careful consideration is required for their definition and use. However, most railways surveyed chose their reliability measures either based on regulatory obligations or simply because these were used elsewhere.

  • CONFERENCE PAPER
    Horcher D, Graham DJ,

    Crowding and the marginal cost of travelling under second-best capacity provision

    , International Transport Economics Association Annual Conference

    The classic economic theory of capacity optimisation in public transport suggests that the welfare maximising frequency and vehicle size increase with demand, and therefore the optimal occupancy rate may not dependent on demand; crowding can be internalised through capacity adjustment. On the other hand, empirical studies show that the crowding externality does contribute significantly to the social cost of public transport usage in large metropolitan areas. This paper presents a theoretical framework that explains why rational second-best capacity provision may lead to a wide range of demand dependent crowding levels under economies of vehicle size, infrastructure constraints and demand fluctuations. We derive the marginal external waiting time, crowding and operational costs of travelling for second-best scenarios, and explore the resulting subsidy rates. Thus, we take an important step towards the full understanding of optimal demand and crowding dependent pricing in public transport.

  • REPORT
    Horcher D, Graham DJ, Anderson RJ, 2016,

    Merging smart card data and train movement data: How to assign trips to trains?

    , Merging smart card data and train movement data: How to assign trips to trains?

    This report explains the assignment method applied to link trips compiled in smart card data to train movements recorded in the signalling system. Particular attention has been paid to (1) origin-destination pairs with multiple potential route options, (2) peak-hour trips delayed by di culties in boarding crowded trains at the origin station, and (3) trips originating or ending on rail lines not included in the train movement dataset.In the current version of this paper the metro network on which the method has been applied is anonymised.

  • JOURNAL ARTICLE
    Yannis G, Dragomanovits A, Laiou A, Richter T, Ruhl S, La Torre F, Domenichini L, Graham D, Karathodorou N, Li Het al., 2016,

    Use of Accident Prediction Models in Road Safety Management – An International Inquiry

    , Transportation Research Procedia, Vol: 14, Pages: 4257-4266, ISSN: 2352-1465
  • CONFERENCE PAPER
    Horcher D, Graham DJ, Anderson R,

    The link between crowding pricing and seat supply in public transport

    , Transportation Research Board 95th Annual Meeting, Washington D.C.
  • CONFERENCE PAPER
    Horcher D, Graham DJ,

    The dark side of travel passes: Wrong incentive in crowding

    , Transportation Research Board 95th Annual Meeting, Washington D.C.
  • CONFERENCE PAPER
    Cohen JM, Trompet M,

    Propulsion technology trends across major bus operators in Europe, North America and South-East Asia

    , 43rd European Transport Conference

This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.

Request URL: http://wlsprd.imperial.ac.uk:80/respub/WEB-INF/jsp/search-t4-html.jsp Request URI: /respub/WEB-INF/jsp/search-t4-html.jsp Query String: id=980&limit=30&respub-action=search.html Current Millis: 1555987418801 Current Time: Tue Apr 23 03:43:38 BST 2019