1,571 research outputs found
Review of fares elasticities in Great Britain
INTRODUCTION
Empirical analysis of the behavioural impact of a wide range of travel variables has been conducted extensively in Britain over the past forty years or so. With the likely exception of the value of travel time (Wardman, 2001), the most widely estimated parameters have been price elasticities of demand and in particular public transport fare elasticities. The wealth of available evidence provides an excellent opportunity to obtain greater insights into fare elasticities and their determinants.
There have been numerous notable reviews of price elasticities (Ely, 1976; TRF&, 1980; Goodwin and Williams, 1985; Goodwin, 1992; Oum et al, 1992; Halcrow Fox et al., 1993; Wardman, 1997; Nijkamp et al., 1998; Pratt, 2000; De Jong and Gunn, 2001; Graham and Glaister, 2002; VTPI, 2003). The unique features of this study are that it covers a much larger amount of public transport evidence and a broader range of issues than previous reviews and, more significantly, it has developed a model to explain variations in fare elasticities across studies.
This review covers 902 public transport fare elasticities obtained from 104 studies conducted in Britain between 1951 and 2002. The markets covered are inter-urban rail travel, suburban rail travel, urban bus travel and London underground
Stated Preference Analysis of Driver Route Choice Reaction To Variable Message Sign Information
Highway Authorities in many parts of the world have, for some years, been using variable message panels mounted above or beside the camageway to communicate short messages to motorists. Most such applications have been concerned with hazard warning and speed advice. However, their use to deliberately affect route choice is an area of great current interest. It is recognised that they have a potential role in managing demand to match the capacity available, not only to alleviate acute problems caused by roadworks and accidents, but also to contribute to satisfactory performance of networks operating close to capacity over extended periods of high, but variable, demand. The installation and operation of the panels is not cheap and there is a widespread belief that overuse, or inappropriate use, of the messages may lead to them losing their credibility with the motorists and thus ceasing to be effective. It is therefore very important to understand the likely response of motorists to various messages before displaying them and even before selecting sites for the installation of panels.
A number of researchers have explored drivers' responses to traffic information and route advice offered via variable message signs (VMS). Evidence from traffic counts suggests that messages can persuade somewhere between 5% and 80% of drivers to divert. Clearly this range of estimates is far too wide to support the use of VMS for fine tuning the pattern of demand. A major contributor to the uncertainty, however, is the varying, and often unknown, proportion of drivers whose destination makes the message relevant to them. More detailed studies involving driver interviews downstream of the VM!3 site to determine the relevance of the message, as well as the response to it, include those by Kawashima (1991) and Durand-Raucher et al. (1993). These studies have produced more precise estimates of compliance but the results are obviously limited to those messages which were on display at the time the interviews were being conducted.
A number of researchers have sought to overcome this restriction by examining response to a range of messages presented via a stated preference exercise (see for example Hato et al., 1995; Shao et al., 1995 and Bonsall and Whelm, 1995), via a route-choice-simulator (see for example Firmin, 1996; Bonsall and Merrall, 1995 ; Bonsall and Palmer, 1997) or via a full scale driving simulator or system mock-up (see for example Mast and Ballas, 1976 and Brocken and Van der Vlist, 1991). This research has suggested that response is highly dependent on message content, subjects' network knowledge, and on the extent of any implied diversion.
We see particular value in extending this earlier work to consider a wider range of messages and to determine whether the route-choice-simulator results can be repeated and extended using a somewhat cheaper methodology - namely stated preference analysis. The objectives of the work reported in this paper were thus:
to extend to our existing database on drivers' response to traffic information and route advice provided in variable message signs, to include a wider range of messages.
to construct explanatory models of drivers' route choice behaviour in response to a variety of messages
to explore the factors influencing this response
to compare these results with previous results obtained using a variety of data collection methods
to draw policy conclusions, where appropriate, on the use of variable message signs to influence drivers' route choice
to draw conclusions, where appropriate, on our data collection and modelling methodology
Rail Privatisation: The Practice – An Analysis of Seven Case Studies
After a brief description of the proposals for rail privatisation in Great Britain, this paper contrasts these with the proposals and experience in other countries around the world.
The proposals and experience in other countries contain some elements of the British proposals, however, the 'open access' element that features strongly in the British proposals has never been experienced on any significant scale elsewhere.
In conclusion, experience elsewhere may shed light on the likely outcome of some aspects of the British proposals, but other aspects such as 'open access' and vertical separation are still unknowns
Rail Privatisation: The Economic Theory
The purpose of this paper is to examine the relevance of economic theory to the rail privatisation proposals contained in the Railways Act 1993. After a review of the latest rail privatisation literature four major themes emerged:
(1) Contestability and Barriers to Entry.
(2) Franchising.
(3) Vertical Integration.
(4) Horizontal Integration.
Following a short review of the rail privatisation proposals the paper presents each theme in the context of the proposals. In conclusion, we highlight a number of future issues which will require monitoring and research in the future. In particular, we identify a number of hypotheses, put forward by both those in favour and against the Government's proposals, that should be tested
European Railway Comparisons: Final Report
The Institute for Transport Studies (ITS), University of Leeds and the British Railways Board (BRB) carried out a major comparative study of Western European railways in the late 1970s (BRB and University of Leeds, 1979). Follow-up work was carried out by ITS financed by the Social Science Research Council and reported by Nash (1985). It was deaded to revive this work at ITS for a number of reasons:
It is over ten years since the last set of comparisons (for 1981) were made at ITS and therefore a review of the changes in costs and productivity may be timely.
There has been a number of technical developments that make the use of statistical cost analysis more promising. These developments include the use of more flexible functional forms such as the translog, and the development of comprehensive total factor productivity indices (see, for example, Dodgson, 1985 and, more recently, Hensher and Waters, 1993).
There is increasing interest in the organisational structure of railway industries as a result of the 1988 Transport Act in Sweden, the EC directive 91/4-40 and the publication of proposals for privatising British Rail in July 1992 (see, for example, ECMT, 1993).
Given the explosion in information technology, there were some hopes that data availability would have improved.
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Addressing Professional Competency Problems in Clinical Psychology Trainees
© 2017 The Australian Psychological Society Objective: Clinical psychology trainees with problems of professional competence (PPC) continue to be a challenge for courses. Despite the rapid development of competency-based training models, the impact of this shift to the identification and management of professional competency problems is unclear. This project aims to describe how clinical psychology trainees with PPC are identified and managed within the Australian and New Zealand context. Method: An online survey was distributed through Australian and New Zealand universities offering clinical psychology training programmes. Questions addressed approaches to monitoring progress on placements, identification and management of trainees determined to be underperforming on placements, and the perceived usefulness of a range of strategies such as the use of standardised-rating tools. Results: Thirty one responses were received, representing 40 clinical psychology training courses in 22 institutions across Australia and New Zealand. In all cases, at least one trainee with a PPC had been detected in the previous 5 years, most commonly attributed to psychological, behavioural, and developmental issues. Respondents reported the use of a range of preventive and remedial strategies, including the use of psychometrically validated competency evaluation rating forms to assist in the grading of placements. Conclusion: Trainees with PPC occur on a fairly regular basis in clinical psychology training courses in Australian and New Zealand. While some processes involved in the identification and management of these students have been refined and systematised, some opportunities to facilitate early identification and remediation may yet need further enhancement
The use of recovery time in timetables: rail passengers' preferences and valuation relative to travel time and delays
Recovery time in the rail industry is the additional time that is included in train timetables over and above the minimum journey time necessary often with the explicit aim of improving punctuality. Recovery time is widely used in railways in a number of countries but prior to this study there has been no investigation of the rail users’ point of view. Perceived recovery time, such as being held outside stations and prolonged stops at stations, might have some premium valuation due to the frustration caused. If perceived recovery time in train timetables does carry a premium, then the benefits of improved punctuality achieved by it will be reduced. This paper is the first to investigate passengers’ views and preferences on the use of recovery time. We summarise the findings of a large study and provide estimates of passengers’ valuations of recovery time, both relative to in-vehicle time and late time, that can be used for economic appraisal purposes. Overall, we find most passengers support the use of recovery time but the context is important. Only 13% of users disapprove of its use as a tool to reduce lateness. The estimated premia vary by demand characteristics and are significant in some contexts, although on average are of a small magnitude. The applicability of the estimates is demonstrated through the appraisal of an actual scheme in the UK. We observe that the introduction of more recovery time along with the subsequent improvement in reliability can lead to significant reductions in generalised journey time, even when recovery time carries a valuation premium. We must however strike a word of caution since we note that there were higher than expected proportions of non-traders in the survey which may have affected the results; future studies into the topic should look to minimise the proportion of non-traders. This study provides valuable and necessary first steps in this challenging topic
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