Paratransit resource guide /

Mode of access: Internet.

Conceptual study of handicapped facilities for new subway station designs /

"Report no. UMTA-DC-06-0182-80-1."

Roosevelt Island Tramway System assessment /

Mode of access: Internet.

Programa ciclovida como política de mobilidade urbana sustentável: estudo empírico na Universidade Federal do Paraná

The urban mobility has in the bicycle its symbol of the most environmentally sustainable modal of transportation of the planet, title conferred by the United Nations Organization (ONU). Nevertheless, the cities suffer with the traffic jam caused by the automobile fleet growth, what implies in a larger displacement time, injuries to the environment, to financials and to the quality of life. In order to build in a sustainable way the urban mobility, public policies are necessary to encourage the preferential usage, by the society, of the mass transit or the non-motorized type of transportation. Objecting cooperate with the public power and the civil society, this study intents to, through an analysis about the UFPR Extension Program - CICLOVIDA, propose a sustainable urban mobility public policy development, with emphasis in the bicycle´s usage. eferentially, it is discussed concepts such as Society, State and Government as well as public policies, which go in cycles to the State´s and Government´s responsibilities; and are presented the Sustainable Urban Mobility Public Policies (PPMUS) in Brazil. Also, it is debated about the transport by bicycle as an option to the sustainable mobility. Methodologically, the study is of an empiric-social nature, with the application of both qualitative and observational methods, what characterizes as an exploratory level of research, with the researcher´s involvement in the participant form, due to her acting on the Program. Regarding the research lineation, it was used the bibliographic and documental form as well as case study, by means of the nonparametric sampling by accessibility or convenience. Related to the data collection technique, it was used structured interviews with self-applied questionnaires and natural participant observation. Aligned with the research´s objective and matter, the outcome confirmed that the Extension Program CICLOVIDA of the Federal University of Paraná (UFPR) may effectively contribute in the development of a PPMUS proposal with emphasis in the bicycle usage. Thus, it was built a political proposal with a free form writing, objecting subsidize policies both institutional as public MUS through the bicycle usage and therefore, support the mobility, also contributing to the sustainability and to the public development planning.

Study of wheel-rail impact at insulated rail joint through experimental and numerical methods

As part of an ongoing research on the development of a longer life insulated rail joint (IRJ), this paper reports a field experiment and a simplified 2D numerical modelling for the purpose of investigating the behaviour of rail web in the vicinity of endpost in an insulated rail joint (IRJ) due to wheel passages. A simplified 2D plane stress finite element model is used to simulate the wheel-rail rolling contact impact at IRJ. This model is validated using data from a strain gauged IRJ that was installed in a heavy haul network; data in terms of the vertical and shear strains at specific positions of the IRJ during train passing were captured and compared with the results of the FE model. The comparison indicates a satisfactory agreement between the FE model and the field testing. Furthermore, it demonstrates that the experimental and numerical analyses reported in this paper provide a valuable datum for developing further insight into the behaviour of IRJ under wheel impacts.

Peak power demand reduction under moving block signalling using an expert system

The concept of moving block signallings (MBS) has been adopted in a few mass transit railway systems. When a dense queue of trains begins to move from a complete stop, the trains can re-start in very close succession under MBS. The feeding substations nearby are likely to be overloaded and the service will inevitably be disturbed unless substations of higher power rating are used. By introducing starting time delays among the trains or limiting the trains’ acceleration rate to a certain extent, the peak energy demand can be contained. However, delay is introduced and quality of service is degraded. An expert system approach is presented to provide a supervisory tool for the operators. As the knowledge base is vital for the quality of decisions to be made, the study focuses on its formulation with a balance between delay and peak power demand.

Railway junction conflict resolution by local search method

This study investigates the application of local search methods on the railway junction traffic conflict-resolution problem, with the objective of attaining a quick and reasonable solution. A procedure based on local search relies on finding a better solution than the current one by a search in the neighbourhood of the current one. The structure of neighbourhood is therefore very important to an efficient local search procedure. In this paper, the formulation of the structure of the solution, which is the right-of-way sequence assignment, is first described. Two new neighbourhood definitions are then proposed and the performance of the corresponding local search procedures is evaluated by simulation. It has been shown that they provide similar results but they can be used to handle different traffic conditions and system requirements.

A review of simulation models for railway systems

With the advances in computer hardware and software development techniques in the past 25 years, digital computer simulation of train movement and traction systems has been widely adopted as a standard computer-aided engineering tool [1] during the design and development stages of existing and new railway systems. Simulators of different approaches and scales are used extensively to investigate various kinds of system studies. Simulation is now proven to be the cheapest means to carry out performance predication and system behaviour characterisation. When computers were first used to study railway systems, they were mainly employed to perform repetitive but time-consuming computational tasks, such as matrix manipulations for power network solution and exhaustive searches for optimal braking trajectories. With only simple high-level programming languages available at the time, full advantage of the computing hardware could not be taken. Hence, structured simulations of the whole railway system were not very common. Most applications focused on isolated parts of the railway system. It is more appropriate to regard those applications as primarily mechanised calculations rather than simulations. However, a railway system consists of a number of subsystems, such as train movement, power supply and traction drives, which inevitably contains many complexities and diversities. These subsystems interact frequently with each other while the trains are moving; and they have their special features in different railway systems. To further complicate the simulation requirements, constraints like track geometry, speed restrictions and friction have to be considered, not to mention possible non-linearities and uncertainties in the system. In order to provide a comprehensive and accurate account of system behaviour through simulation, a large amount of data has to be organised systematically to ensure easy access and efficient representation; the interactions and relationships among the subsystems should be defined explicitly. These requirements call for sophisticated and effective simulation models for each component of the system. The software development techniques available nowadays allow the evolution of such simulation models. Not only can the applicability of the simulators be largely enhanced by advanced software design, maintainability and modularity for easy understanding and further development, and portability for various hardware platforms are also encouraged. The objective of this paper is to review the development of a number of approaches to simulation models. Attention is, in particular, given to models for train movement, power supply systems and traction drives. These models have been successfully used to enable various ‘what-if’ issues to be resolved effectively in a wide range of applications, such as speed profiles, energy consumption, run times etc.

Thermal studies of D.C. traction motors

This paper describes a thorough thermal study on a fleet of DC traction motors which were found to suffer from overheating after 3 years of full operation. Overheating of these traction motors is attributed partly because of the higher than expected number of starts and stops between train terminals. Another probable cause of overheating is the design of the traction motor and/or its control strategy. According to the motor manufacturer, a current shunt is permanently connected across the motor field winding. Hence, some of the armature current is bypassed into the current shunt. The motor then runs above its rated speed in the field weakening mode. In this study, a finite difference model has been developed to simulate the temperature profile at different parts inside the traction motor. In order to validate the simulation result, an empty vehicle loaded with drums of water was also used to simulate the full pay-load of a light rail vehicle experimentally. The authors report that the simulation results agree reasonably well with experimental data, and it is likely that the armature of the traction motor will run cooler if its field shunt is disconnected at low speeds

Does residential dissonance impact residential mobility?

This research identifies residential mobility behaviour impacts of residential dissonance in Transit Oriented Developments (TODs) vs. non-TODs in Brisbane, Australia. Based on the characteristics of living environments (density, diversity, connectivity, and accessibility) and the travel preferences of 4545 individuals, respondents in 2009 were classified into one of four categories including: TOD consonants, TOD dissonants, non-TOD dissonants, and non-TOD consonants. Binary logistic regression analyses were employed to identify residential mobility behaviour of groups between 2009 and 2011; controlling for time varying covariates. The findings show that both TOD dissonants and TOD consonants move residences at an equal rate. However, TOD dissonants are more likely to move residences to their preferred non-TOD areas. In contrast, non-TOD dissonants not only moved residences at a lower rate, but their rate of mobility to their preferred TOD neighbourhood is also significantly lower due to costs and other associated factors. The findings suggest that discrete land use policy development is required to integrate non-TOD dissonant and TOD dissonant behaviours to support TOD development in Brisbane.

Driving simulator evaluation of the failure of an audio in-vehicle warning for railway level crossings

It is impracticable to upgrade the 18,900 Australian passive crossings as such crossings are often located in remote areas, where power is lacking and with low road and rail traffic. The rail industry is interested in developing innovative in-vehicle technology interventions to warn motorists of approaching trains directly in their vehicles. The objective of this study was therefore to evaluate the benefits of the introduction of such technology. We evaluated the changes in driver performance once the technology is enabled and functioning correctly, as well as the effects of an unsafe failure of the technology? We conducted a driving simulator study where participants (N=15) were familiarised with an in-vehicle audio warning for an extended period. After being familiarised with the system, the technology started failing, and we tested the reaction of drivers with a train approaching. This study has shown that with the traditional passive crossings with RX2 signage, the majority of drivers complied (70%) and looked for trains on both sides of the rail track. With the introduction of the in-vehicle audio message, drivers did not approach crossings faster, did not reduce their safety margins and did not reduce their gaze towards the rail tracks. However participants’ compliance at the stop sign decreased by 16.5% with the technology installed in the vehicle. The effect of the failure of the in-vehicle audio warning technology showed that most participants did not experience difficulties in detecting the approaching train even though they did not receive any warning message. This showed that participants were still actively looking for trains with the system in their vehicle. However, two participants did not stop and one decided to beat the train when they did not receive the audio message, suggesting potential human factors issues to be considered with such technology.

Comprehensive Statewide Transportation Model: Multimodal Investment Analysis Methodology Phase II, CTRE Project 02-126, 2001

The purposes of this report (Phase II of the project) are to specify in mathematical form the individual modules of the conceptual model developed in Phase I, to identify and evaluate sources of data for the model set, and to develop the transport networks necessary to support the models.

Aprovechamiento del espacio interior de las estaciones de transporte masivo, a partir del ofrecimiento de servicios agregados al transporte: perspectivas de su implementación en los portales del Sistema Transmilenio

El presente trabajo de grado está relacionado con el aprovechamiento del espacio interior de los portales del sistema de transporte público masivo en Bogotá (Transmilenio), a partir de la oferta de servicios de valor agregado al transporte público.

Influencia de la implantación del Sistema Integrado de Transporte Masivo en los procesos de planeación local. Estudio de caso: Fase 1 y 2- Metrolínea en el Área Metropolitana de Bucaramanga. Periodo 2003-2011.

Esta investigación le permite al lector entender la influencia que tuvo la implantación del Sistema Integrado de Transporte Masivo (SITM) sobre la gestión del ordenamiento territorial en el Área Metropolitana de Bucaramanga. El documento explica y analiza las posibles transformaciones que se podrían generar en los alrededores del sistema, partiendo de reconocer que existen unas áreas denominadas centralidades y otras operaciones estratégicas que son catalogadas no solamente por el rol que cumplen en un contexto municipal y metropolitano, sino también por las posibilidades que ofrecen para el desarrollo de servicios, equipamientos y empleo, que finalmente contribuirán a alcanzar el deseo de un modelo desarrollo policéntrico en el área metropolitana.

Principales actores en la formación de la política de modernización de transporte urbano de la Alcaldía de Maracaibo

La década de los noventa marcó el inicio de la modernización del transporte urbano en las principales ciudades de Venezuela, entre ellas en la ciudad de Maracaibo, segunda ciudad en importancia en el país, proceso que tuvo lugar formalmente desde la Alcaldía de Maracaibo, pero en el cual participaron numerosos actores nacionales e internacionales que dan cuenta de un proceso que se inserta en un modelo de transporte urbano de origen foráneo, vinculado a la necesidad de poner esta actividad a tono con los requerimientos de una economía de mercado. El propósito de este trabajo es identificar la política que en definitiva se formó, los distintos actores involucrados y el rol de cada uno. Se parte de la hipótesis que es escasa la participación local en este proceso, el cual se origina en los organismos multilaterales. Los resultados revelan: 1) Los principales actores involucrados en la formación de la política fueron: Banco Mundial, Consorcio Systra-Sofrrtu, Instituto Municipal de Transporte Colectivo Urbano de la ciudad de Maracaibo (IMTCUMA), Fondo Nacional de Transporte Urbano (FONTUR), Ministerio de Infraestructura (MINFRA), antiguo Ministerio de Transporte y Comunicaciones (MTC), La Universidad del Zulia, Comisión Presidencial del transporte para la ciudad de Maracaibo, Consejo Venezolano de transporte, Alcaldía de Maracaibo y Metro de Maracaibo; 2) La participación de estos organismos fue muy variada, correspondiéndole el rol de orientador al Banco Mundial y el resto en distintos niveles y en el rol de asesores y ejecutores; 3) La política estuvo dirigida a: reducir los tiempos de viaje de los trabajadores; incorporar empresas privadas en el sector transporte y dar prioridad en la prestación del servicio en los sectores comerciales e industriales. Se concluye que la política de transporte de la ciudad de Maracaibo ha tenido lugar con la participación de los organismos multilaterales y la escasa participación del gobierno local y los usuarios.-----The 1990s marked the start of the urban transport modernization in the main cities of Venezuela, including Maracaibo, the second city. It was formally managed from the Mayor’s Office of Maracaibo, but involved a number of national and international actors in a process that became embedded into an urban transport model of foreign origin, linked to the need of aligning this activity with the market economy requirements. The purpose of this paper is to identify the policy that resulted in the end, the different actors involved, and the role played by each of them. The basis assumption is the scarce local participation in this process, which arose from multilateral organizations. The results reveal that: 1) The main actors involved in the policy structuring were: World Bank, Systra-Sofrrtu Consortium, Maracaibo Urban Mass Transport Institute (Instituto Municipal de Transporte Colectivo Urbano de la ciudad de Maracaibo –IMTCUMA–), National Urban Transport Fund (Fondo Nacional de Transporte Urbano –FONTUR–), Ministry of Infrastructure (MINFRA), former Ministry of Transport and Communications (MTC), La Universidad del Zulia, President’s Transport Commission for the city of Maracaibo, Venezuelan Transport Board, Mayor’s Office of Maracaibo, and Metro of Maracaibo; 2) The participation of these organizations was very varying, the World Bank playing the directing role, and the others in different levels as advisors and implementers; 3) The policy was addressed to: reducing workers commuting times; incorporating private companies into the transport sector; and giving priority to the service provision in commercial and industrial sectors. The conclusion is that the transport policy in the city of Maracaibo occurred with the participation of multilateral organizations and very little participation of the local government and users.