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Abstracts from theJournal of Public TransportationVolume 12, No. 4, 2009 The Efficiency of Sampling Techniques for NTD ReportingAbstract This paper examines the minimum sample size required by each of six sampling techniques for estimating annual passenger miles traveled to meet the Federal Transit Administration’s 95% confidence and 10% precision levels for the National Transit Database. It first describes these sampling techniques in non-technical terms and hypothesizes how they are expected to compare in their minimum sample sizes. It then determines the minimum sample size for 83 actual sample datasets that cover 6 modes and 65 transit agencies. Finally, it summarizes the results in minimum sample size to compare the relative efficiency of these sampling techniques. The potential for improved efficiency from using these sampling techniques is great, but the exact degree of improvement depends highly on individual agencies, modes, and services. Full text (pdf)Growth Management and Sustainable Transport: Do Growth Management Policies Promote Transit Use?Abstract Advocates of sustainable development typically consider mass transit to be more sustainable than their automobile-dependent alternatives and desire policies that can achieve higher use of urban mass transit. In this paper, we hypothesize that state-level growth management policies should increase transit use in two ways: first, by limiting core abandonment while accommodating potential increases in population, reducing development elsewhere; and second, by directing new development where transit systems are already well established. We tested this by analyzing 95 metropolitan areas across the United States, 16 with growth-management policies and 79 without. We found that the first set showed a statistically significant improvement in the percentage transit users. The empirical analysis on causality, however, suggests that the improvement is more likely due to an increase in occupancy rates within core areas, by limiting abandonment, rather than in shifting the location of new development to transit areas.Full text (pdf) Bike-sharing: History, Impacts, Models of Provision, and FutureAbstract This paper discusses the history of bike-sharing from the early 1st generation program to present day 3rd generation programs. Included are a detailed examination of models of provision, with benefits and detriments of each, and a description of capital and operating costs. The paper concludes with a look into the future through discussion about what a 4th generation bike-sharing program could be. Full text (pdf) Service Supply and Customer Satisfaction in Public Transportation: The Quality ParadoxSatisfaction measures obtained from citizens are frequently used in performance-based contracts due to their presumed link with company performance. However, few studies have actually examined the link between traveler satisfaction measures and objective performance measures in public transport. This research analyzes the relationship between the objective performance measures of public transport services and the satisfaction perceived by travelers. Data were collected in six different European cities. Three objective service performance measures were obtained for each city from the UITP Millennium Database. Three subjective satisfaction attribute measures were obtained from Benchmarking in European Service of Public Transport (BEST 2001), answered by 6,021 respondents in total. In addition to subjective attribute measures, overall satisfaction was also used as a subjective measure. Several co-relational analyses show that the relationship between satisfaction and service performance in public transport is far from perfect. Full text (pdf) Transit “Pass-Through” Lanes at Freeway Interchanges: A Life-Cycle Evaluation MethodologyTransit “pass-through” lanes provide transit vehicle priority at freeway interchanges. “Pass-through” lanes allow a transit vehicle to exit the freeway at an interchange, cross straight through the intersecting arterial road, and re-enter the freeway. This treatment allows transit vehicles to bypass congestion on the mainline between the beginning of the off-ramp and the end of the on-ramp. This paper outlines a methodology to evaluate if transit “pass-through” lanes are economically justified at a given interchange and provides a method for prioritizing candidate locations. The methodology provides an objective and consistent decision making method, reduces the effort required for practitioners to assess the need for “pass-through” treatment at a given interchange, and helps ensure that limited resources are directed towards interchanges that are expected to experience the greatest benefit per dollar spent. The proposed methodology is based on an analytical approach that compares the value of travel time savings (for passengers and transit vehicles) with the construction and maintenance costs of the transit “pass-through” lane treatment. Full text (pdf) A Case Study of Job Access and Reverse Commute Programs in the Chicago, Kansas City, and San Francisco Metropolitan RegionsAbstract The 1996 federal welfare-to-work legislation generated significant debate regarding what role public transportation should play in facilitating lower welfare rates. Given this debate, transportation has been called the “to” component of welfare-to-work. In this paper, we present findings from three case studies that examine job accessibility and reverse commute transportation programs in the Chicago, Kansas City, and San Francisco metropolitan regions. We explored how institutional and/or grassroots support prevented or fostered the innovation and implementation of non-traditional Access-to-Jobs and Reverse Commute (JARC) programs. Our findings suggest that institutional support and grassroots support are necessary ingredients for the implementation of innovative transportation programs for low-income families. Full text (pdf)
Design of Transit Signal Priority at Signalized Intersections with Queue Jumper LanesA queue jumper lane is a special bus preferential treatment that combines a short stretch of a special lane with a transit signal priority (TSP) to allow buses to bypass waiting queues of traffic and then to cut out in front of the queue by getting an early green signal. This paper first proposes a signal control design for queue jumper lanes with actuated TSP strategies and then compares its performance with that of the general actuated mixed-lane TSP. Different design alternatives were evaluated in the VISSIM microscopic simulation. The results show that the proposed TSP with queue jumper lanes can reduce more bus delays than can the commonly-used mixed-lane TSP, especially under high traffic volume conditions. It was also found that a near-side bus stop is superior to the far-side counterpart in terms of both bus delay and overall intersection delay for the proposed design.Full text (pdf)
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