31 results on '"TRAFFIC engineering"'
Search Results
2. Implementación de un detector de movimiento para cámaras inteligentes sobre sistemas embebidos.
- Author
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Garcés-Socarrás, Luis M., Sánchez-Correa, Roberto, Cabrera Sarmiento, Alejandro J., Sánchez-Solano, Santiago, and Brox Jiménez, Piedad
- Subjects
- *
TRAFFIC cameras , *MOTION detectors , *EMBEDDED computer systems , *TRAFFIC engineering , *TRAFFIC monitoring , *VEHICLE detectors , *DIGITAL image processing - Abstract
This paper describes the implementation of a motion detector system for traffic control's smart cameras on embedded devices that can be used in multiple application fields. The proposed system detects moving areas in video sequences, thus reducing the processing time of video analysis algorithms by selecting regions of interest. As part of this work, three motion detection modules, and auxiliary blocks, were developed based on the bio-inspired elementary motion detector presented by Reichardt & Hassenstein. These motion detection modules have been incorporated in the portfolio of modules in the XIL XSGImgLib video and image processing library, which aims to speed-up and ease visual image processing applications over Xilinx FPGAs and SoC FPGAs. To test the detectors, a spatio-temporal motion detection application has been implemented on a Spartan-6 LX45 FPGA using video sequences from a vehicular traffic control point, showing execution time improvements on the elementary motion detector block compared with similar developments reported in the consulted literature. [ABSTRACT FROM AUTHOR]
- Published
- 2020
3. Reestructuración de las Creencias Asociadas al Consumo de Drogas y la Conducción en Jóvenes.
- Author
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Picado-Valverde, Eva M. and Sánchez-Martín, Fernando
- Subjects
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RISK perception , *DRUGS , *TRAFFIC engineering , *DRUG utilization - Abstract
The challenge of reducing road traffic accidents and increasing road safety makes it necessary to raise awareness, particularly in young people, about related risks of the drugs and driving relationship. The aim of this study is to analyze the impact of the implementation of a prevention program to change young people's attitudes towards drugs and driving, in addition to investigating the relationship between risk perception of drugs use and driving depending on sex variable. A cross-sectional and quasi-experimental study was carried out with a sample of 3,299 young people from Salamanca province. The result reveals a change in beliefs and drugs representation and risk perception in young people linked to the influence of different substances on driving, showing significant sex differences in people's risk perceptions due to the drugs and driving relationship. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
4. Exploración de relaciones causales entre accidentalidad vial y productividad empresarial usando dinámica de sistemas.
- Author
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Duarte Forero, Edgar Leonardo, Camacho Oliveros, Manuel Ángel, and Meneses Velosa, Sonia
- Subjects
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TRAFFIC engineering , *TRAFFIC safety , *SYSTEM dynamics , *ROAD safety measures , *GOVERNMENT policy , *TRAFFIC accidents - Abstract
Traffic accidents are commonly analyzed considering three main factors: driver’s behavior, car’s conditions, and the roads conditions. An exploration of the relations among business productivity and traffic accidents is made, considering also the influence of traffic authorities. A simulation model based on System dynamics was developed to explore the specific relations among the behavior of drivers and the working pressure of their jobs, and the traffic controls made by government authorities. The analysis considers that an improvement in productivity and a fewer, but more intense traffic controls, is a valid strategy to reduce accidents in roads. The model is a useful tool that can be applied in the design of public policies for road safety. [ABSTRACT FROM AUTHOR]
- Published
- 2018
5. Un estudio sobre algoritmos basados en restricciones: objetivos ingeniería de tráfico y calidad de servicio.
- Author
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Becerra, L. Y., Bañol, J. L., and Padilla, J. J.
- Abstract
Internet routing is based on the destination address and a shortest path algorithm, this leads to some links are congested because the same paths are selected for many communications. On the other hand, constraint based algorithms select the path based on a set of requirements that allows choosing the most optimal path for a specific set of constraints, solving the problem of the shortest path routing and providing additional benefits such as support QoS and traffic engineering. In the literature, it has been shown that the processes with traffic engineering objectives are NP-hard, and for quality of service are NP-complete, it allows making heuristic algorithms proposals because this is an open issue. Therefore, this article provides an overview of the constraint based algorithms proposed as a solution to the problem of conventional Internet routing in the last 15 years. This study has been organized into three categories according to the goals for each proposal. These categories were targeted in Internet current issues that are Traffic Engineering and Quality of Service support. A brief description of each algorithm is presented, highlighting their objectives and constraints. It is very important to highlight that to propose solutions to these issues remains a challenge and is an open issue, for this reason to have a knowledge of the taxonomy of these algorithms and objectives allows us to propose new alternatives to routing for next generation networks, with new demands on their services. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
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6. ParkIt - Plataforma inteligente de estacionamiento público.
- Author
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Formoso, Agustín, Mazzilli, Agustín, and Sotelo, Rafael
- Abstract
Cities across the world are constantly growing, and the traffic infrastructure of many of them starts to reach its maximum capacity. Different points of these cities are negatively affected by the vast amount of vehicles that try to access congested zones, and that oftenly makes finding an on-street parking spot where to park a car a difficult task. In this context the ParkIt project is developed, which is a platform that offers real-time information about on-street parking availability. This platform optimises the use of free parking spots, and reduces the incurred delays while in search of them. By knowing the location of available parking spots, users of this platform find themselves less times looking for a parking spot, contributing to reduce traffic in up to 30%. [ABSTRACT FROM AUTHOR]
- Published
- 2014
7. ParkIt - Plataforma inteligente de estacionamiento público.
- Author
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Formoso, Agustín, Mazzilli, Agustín, and Sotelo, Rafael
- Abstract
Cities across the world are constantly growing, and the traffic infrastructure of many of them starts to reach its maximum capacity. Different points of these cities are negatively affected by the vast amount of vehicles that try to access congested zones, and that oftenly makes finding an on-street parking spot where to park a car a difficult task. In this context the ParkIt project is developed, which is a platform that offers real-time information about on-street parking availability. This platform optimises the use of free parking spots, and reduces the incurred delays while in search of them. By knowing the location of available parking spots, users of this platform find themselves less times looking for a parking spot, contributing to reduce traffic in up to 30%. [ABSTRACT FROM AUTHOR]
- Published
- 2014
8. En defensa de las glorietas suburbanas.
- Author
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Aldama Caso, Jaime
- Subjects
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TRAFFIC circles , *ROAD safety measures , *SUBURBS , *ROAD interchanges & intersections , *TRAFFIC engineering - Abstract
In spite of the criticism received over recent years, frequently without any technical foundation, suburban roundabouts have, in the opinion of the author of this article, resolved numerous traffic problems and have become incorporated within the regional road network and improved road safety. Suburban roundabouts continue to be a good solution to the problems encountered at the meeting points between regional roads, when taking the road to be a means and not an end that only considers transport as its reason for being. [ABSTRACT FROM AUTHOR]
- Published
- 2013
9. Retos tecnológicos para medir el tráfico en Bogotá mediante GPS y comunicación celular.
- Author
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Bravo C., Germán, Castro B., Harold, Bautista M., Luis Javier, Bocarejo S., Juan Pablo, Rodríguez-Valencia, Álvaro, Pérez-Arteaga, Pedro Fabián, and Velázquez G., Sebastián
- Subjects
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TRAFFIC engineering , *GLOBAL Positioning System , *CELL phones & automobiles , *CELL phone systems , *TRAFFIC monitoring ,TRAFFIC flow measurement - Abstract
The Traffic and Urban Mobility System (Sistema de Información de Tráfico y Movilidad Urbana - SITYMUR) is a tool used to collect positional data from circulating agents on the roads, in order to generate traffic and mobility information in near real time. This issue raises important technological challenges concerning communications, data processing and publication of the results. This article describes these challenges and discusses the effectiveness of solutions proposed by showing a number of traffic and speed results for Bogotá as well as suggesting possible alternatives for improvement. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
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10. Redes Multidifusión utilizando Conmutación de Etiquetas Multiprotocolo y Estándares de Señalización.
- Author
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López, Danilo A., Hernández, Cesar A., and Salcedo, Octavio J.
- Subjects
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MPLS standard , *SWITCHING systems (Telecommunication) , *ELECTRONIC systems , *DATA transmission systems , *TRAFFIC engineering , *TRANSPORTATION engineering - Abstract
The present article shows the results of the evaluation of Multiprotocol Label Switching (MPLS) as a technology for the transfer of multicast traffic (sending data from one source to several users) through the use of signaling protocols such as RSVP-TE. To identify the advantages of such an implementation, the setup in this work is compared to a multicast IP network based on the PIMDM protocol. Simulations were carried out using software packages such as OPNET and GNS-3. It was found that MPLS+RSVP-TE offers greater advantages over other architectures. Some of these advantages include quicker link-failure response, shorter delays and less jitter, and also the possibility to reserve bandwidth for priority traffic. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
11. IMPLEMENTACIÓN DE ALGORITMOS DE CONTROL DE TRÁFICO VEHICULAR CON REDES DE PETRI NO BINARIAS UTILIZANDO DIAGRAMAS EN ESCALERA.
- Author
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Díaz, Jhony Andrés Arroyave, Bermúdez, Manuel Alejandro Zuleta, and Salazar, Rubén Darío Vásquez
- Subjects
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DISCRETE systems , *PETRI nets , *PROGRAMMABLE logic devices , *TRAFFIC engineering , *ALGORITHMS - Abstract
This article focuses on the study of non binary Petri nets, its components, ability to model discrete event systems and especially the feasibility and limitations for its programming by using programmable logic controllers (PLCs). A comparison between binary Petri nets and non-binary is made, finding primarily 2 differences: the number of tokens in the states and the weight of the arcs that affect the evolution of the marking. Thus, a method for implementing non-binary on this language is proposed. This methodology is applied to control traffic systems, taking into account the number of vehicles that wait for 2-way cross, to change the time in green and red in every stoplight and optimize the traffic on the intersection. At the end, the results of the obtained simulation in Ladder language are presented. [ABSTRACT FROM AUTHOR]
- Published
- 2012
12. Estudio de Propuestas para Soportar Ingeniería de Tráfico en Internet.
- Author
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Becerra Sánchez, Line Yasmin and Padilla Aguilar, Jhon Jairo
- Subjects
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INTERNET traffic , *INTERNET protocols , *WIDE area networks , *TECHNOLOGY , *ENGINEERING - Abstract
Traffic engineering is an important process for the evaluation and performance in the optimization of operational IP networks. This article provides a rigorous study of several recommendations made by the IETF and other approaches proposed by researchers in the last decade; they are related to specify and support the process of Internet traffic engineering. This study provides a contextualization of a traffic engineering system, the taxonomy and several problems that have been studied in order to improve performance in these networks. This information will be a valuable input to generate a new proposal in order to support Internet traffic engineering. [ABSTRACT FROM AUTHOR]
- Published
- 2012
13. Control de tráfico vehicular usando ANFIS.
- Author
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Pedraza, Luis Fernando, Hernández, César Augusto, and López, Danilo Alfonso
- Subjects
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TRAFFIC engineering , *TRAFFIC signal control systems , *TRAFFIC flow , *ADAPTIVE computing systems , *SIMULATION methods & models , *FUZZY logic , *MATHEMATICAL models - Abstract
Different strategies for urban traffic control have been presented over time. This paper presents the design of a vehicular traffic model, examining the existing traffic through a serie of traffic lights on a road. From this model the times of duration and phase of the traffic lights are synchronized, using the Adaptive Network Based Fuzzy Inference Systems (ANFIS). The model is simulated and the results are evaluated at macroscopic level with the fixed time model, currently operating in Bogota-Colombia. [ABSTRACT FROM AUTHOR]
- Published
- 2012
14. IMPORTANCIA DE LA MANIOBRA DE ADELANTAMIENTO EN CARRETERAS DE DOS CARRILES.
- Author
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Pineda Uribe, Beatriz Elena
- Subjects
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ROAD visibility , *TRAFFIC engineering , *HIGHWAY engineering , *TRAFFIC regulations , *TRAFFIC surveys , *HIGHWAY capacity - Abstract
The presence or absence of the necessary road sections with visibility distance passing on a two-lane road, affects the quality of traffic flow as it affects the capacity, the level of service, accident and operating speed. Therefore, it is very important that a two-lane road has sections with passing sight distance, equally important is also the formula that indicates how many running meters are needed to perform the maneuver safely and the procedure to be performed to the geometric design planes to the determine the road sections in which there is this distance. In considering the formulations that calculate this distance, there are many variables, of which it is necessary to emphasize on some variables and let other variables fixed, taking conditions in which there is no influence of these. That is why data were taken from the maneuver in which a car passing another car, how many seconds of data used by drivers to overtake in places where other variables such as the slope of the road are not of great importance, because very small. It also discusses Colombian regulations related to the topic. [ABSTRACT FROM AUTHOR]
- Published
- 2011
15. Gender, violence and risk in the road traffic. Male domination in the discourses of car drivers in Buenos Aires city.
- Author
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Geldstein, Rosa N., Di Leo, Pablo Francisco, and Margarido, Silvina Ramos
- Subjects
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TRAFFIC engineering , *STOCK car drivers , *MALE domination (Social structure) , *SOCIOCULTURAL factors , *TRAFFIC accidents - Abstract
We present partial results from two Multicentric Studies on sociocultural and demographic aspects of traffic accidents in Argentina, conducted between 2004 and 2008 with financial support from the Ministry of Health. This paper focuses on the relationships between gender dimensions and driving habitus that emerged from 92 indepth interviews applied to an intentional sample of male and female non-professional car drivers in the Buenos Aires City. Qualitative analysis was performed following the interpretive paradigm. Grounded Theory procedures were applied and constant comparison was used for the discovery and construction of categories. We were able to identify the presence of the male domination phenomenon in the habitus and doxa (Bourdieu) of different categories of car drivers. Criticisms of feminine driving styles and discriminatory attitudes against female drivers were found in the dominant discourses of young males and of females of all ages. Different interviewed women value the male pragmatism in driving; while mature women consider it as a \"natural\" masculine attribute, young women adopt it in their own driving practices as a mean to avoid gender stigmatization. However, such a pragmatism is opposed to traffic legal rules and due respect towards other people in the public space and, as long as young women take masculine driving style as their model, the risk of traffic injuries would surely increase. Policies aimed at improving road safety should emphasize the kind of positive values of responsible driving that we discovered in the sub-dominant (feminine, mature) discourses that reminded us Gilligan's concept of the ethics of care. [ABSTRACT FROM AUTHOR]
- Published
- 2011
- Full Text
- View/download PDF
16. Adquisición de variables de tráfico vehicular usando visión por computador.
- Author
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Urrego, Germán Enrique, Calderón, Francisco Carlos, Forero, Alejandro, and Quiroga, Julián Armando
- Subjects
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PHOTOGRAPHY in traffic engineering , *ALGORITHM research , *COMPUTER vision , *PATTERN recognition systems , *TRAFFIC engineering , *TRAFFIC density , *TRAFFIC monitoring - Abstract
The count of vehicles is a key task in traffic gauging, as it provides information for designing new roads, and for the control and optimization of urban traffic. Nowadays in cities like Bogota, vehicle counting is done manually, but it can also be done automatically using computer vision techniques. This article presents the development of an algorithm for detecting and tracking vehicles in real time from video. The algorithm allows to count vehicles on the road and to estimate traffic volume or average speed. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
17. Control y simulación de tráfico urbano en Colombia: Estado del arte.
- Author
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Robles, Daniel, Ñañez, Pablo, and Quijano, Nicanor
- Subjects
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TRAFFIC engineering , *URBAN planning , *TRANSPORTATION planning , *SIMULATION methods & models - Abstract
The current mobility conditions in Colombia give place to questions about the suitability of the traffic control strategies applied on the Colombian urban networks. Therefore, a review of the control strategies and simulation platforms used in Colombia and around the world is shown. This is done to characterize the level of development of the country, in terms of research and implementation of such control strategies and, furthermore, to formulate proposals oriented towards the improvement of the Colombian urban mobility. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
18. Gestión de la movilidad mediante tarifas.
- Author
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Rondón, Miller Salas
- Subjects
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TOLL roads , *TOLLS , *TRAFFIC engineering , *TRANSPORTATION engineering management , *GOVERNMENT revenue , *GOVERNMENT policy ,PREVENTION of traffic congestion - Abstract
The introduction of a fee to manage mobility is widely used by many governments to mitigate the social costs. These costs occur when the demand exceed the road capacity. Moreover, in order to reduce congestion, the fee can generate revenues for strengthening public transport, create infrastructure and implement innovations that improve the mobility of the inhabitants. This article aims to identify the different theoretical, technological and practical aspects also including the opponents of this policy that implies the adoption of this type of solutions to manage the mobility problems in congested urban roads. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
19. ESTRATEGIAS TARIFARIAS Y DESESTIMULACIÓN DEL USO DEL VEHÍCULO PARTICULAR POR MEDIO DEL PICO Y PLACA EN MEDELLÍN.
- Author
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Alberto González Calderón, Carlos
- Subjects
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TRAFFIC engineering , *TRANSPORTATION engineering management , *TRANSPORTATION fares , *TRANSPORTATION programs , *MATHEMATICAL models - Abstract
A survey was conducted for analyzing "pico and placa" measure in Medellin city, using Stated Preference Methods which involve a range of techniques dealing with creation of individual responses about preferences in several transportation means. Laureles neighborhood was the area chosen for conducting the DPM study, since it is one of the areas having the biggest amount of vehicles in the city, so it makes a big contribution to general traffic congestion. It was found that private drivers are not in agreement with "pico y placa" measure, but chaotic traffic in the city is improved with its application. They would rather prefer to share a vehicle with other person (48%) since a private vehicle is a much more comfortable transportation mean. Then they would choose buses (37%), since it is a good service, but lack of safety is a negative factor. 9% would travel to their place of destination in a taxi, since it is a comfortable and safe means; and remaining 6% would use either taxi or metro, though it involves a mandatory transfer when destination is a long distance away. [ABSTRACT FROM AUTHOR]
- Published
- 2009
20. Procedimientos modernos para el análisis de la circulación en vías de dos carriles con flujo ininterrumpido.
- Author
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Menéndez, L. Alba
- Subjects
- *
CARRIAGES & carts , *COMMUNICATIONS industries , *TRAFFIC engineering , *MOTOR vehicle drivers , *ESTIMATION theory - Abstract
The analysis of dual carriage ways circulation, is of great importance becauses it is the base of possible geometric or operative treatments appliances to the solution of problems due to fundamentally by the increase of traffic flows. The procedures used have been updated in the last years using evaluative parameters of efficiency that demonstrate better the drivers perception of comfort in circulation. Here we show the results obtained when these procedures are applied and compared with those obtained by the present Cubans standards. [ABSTRACT FROM AUTHOR]
- Published
- 2005
21. Implementación y análisis de un modelo estocástico de despacho de vehículos de transporte masivo.
- Author
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Riaño, Germán and Acero, Juan Camilo
- Subjects
- *
TRAVEL time (Traffic engineering) , *TRAFFIC surveys , *SIMULATION methods & models , *STOCHASTIC processes , *TRAFFIC engineering - Abstract
In this paper we describe the implementation of a single-route city-bus timetabling LP model proposed by Riaño [15]. The aforementioned model considers stochastic issues like travel time and demand. A simulation model is also described, which was used to compare results from this model with others proposed in the literature. Preliminar results are promising. [ABSTRACT FROM AUTHOR]
- Published
- 2005
- Full Text
- View/download PDF
22. Infraestructuras viales autogeneradoras de energía e inteligentes.
- Author
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ORTI HERNÁNDEZ, Antoni
- Subjects
- *
INTELLIGENT transportation systems , *INFRASTRUCTURE (Economics) , *HIGHWAY communications , *QUALITY of life , *TRAFFIC engineering , *TRAFFIC signs & signals - Abstract
Reinventing the major road infrastructures, giving them more value and making them give us more services is now possible. In this article we will offer a new vision of current road infrastructures. We seek to reinvent them by integrating innovative solutions in order to transform them into sources of local power generation while also equipping them with systems that transform them into smart infrastructures resulting in services for the citizens and in improvements in the quality of life of society as a whole. The article has been divided into two parts: in the first one we will introduce basic concepts, which in turn will be the fundamental principles for understanding the solutions that will be explained in the second part. Solutions that through their installation in the infrastructures will make the most of sunlight and vehicle traffic to generate clean energy locally, which can then be used to power street lighting, road signs, variable information panels, charge electrical vehicles, etc. Through the implementation of these solutions we seek to provide answers to the increase in energy demands while complying with and attaining Horizon 2020, the European strategy for intelligent, sustainable and inclusive growth. [ABSTRACT FROM AUTHOR]
- Published
- 2014
23. "Smart road", la carretera del siglo XXI.
- Author
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DÍAZ PINEDA, Jacobo and DE LA PEÑA GONZÁLEZ, Elena
- Subjects
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ROAD construction , *LIFE cycle costing , *MAINTENANCE costs , *PUBLIC finance , *ROADS , *TRAFFIC engineering - Abstract
The idea of Smart road is based upon definition of a broader, all-inclusive concept with the capacity to incorporate all of the various aspects currently motivating efforts to improve the road sector, such as environmental aspects, highly advanced traffic control technology, analysis of construction maintenance costs (life cycle), the best possible designs taking user capacity into account and financing solutions The base for the development of the Smarf road concept has been included in this article, as an integration of the several positive aspects of highways and address people's highest expectations in relation to highway transport, defeating its importance in the global transport offer. The challenge is now in the development of this concept. [ABSTRACT FROM AUTHOR]
- Published
- 2014
24. Nuevos criterios para el diseño y clasificación del viario urbano.
- Author
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POZUETA ECHAVARRI, Julio
- Subjects
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ROAD construction , *STREET design & construction , *URBAN planning , *TRAFFIC engineering , *MOBILITY (Structural dynamics) - Abstract
Urban road design has traditionally been based on a hierarchical classification of roads according to the volume and type of motor traffic they are to carry and in conjunction with geometric parameters (cross-section, curve radius, etc.) and speed parameters for each resulting type. Such classifications and design methods are today clearly obsolete given the varied requirements of our urban environment and the need to reduce vehicle traffic in cities, whose negative impacts are well known. The study sets out this process, outlines the new framework that should apply to the road network, points out the insurmountable difficulties of adapting the traditional classification to this new framework and looks forward to criteria for designing and structuring urban roads with which the new and complex challenges of more sustai-nable cities and mobility may be met. [ABSTRACT FROM AUTHOR]
- Published
- 2014
25. Viaje peridístico por las radiales de peaje.
- Author
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DE LAS HERAS MOLINA, JAVIER
- Subjects
- *
TOLL roads , *EXPRESS highways , *TRAFFIC engineering , *ARTERIAL roads , *BANKRUPTCY , *MASS media - Abstract
Ten years ago, six new toll highways were inaugurated in Madrid. These projects, which began to be studied in 1976, have been analyzed by the Spanish mass media with different points of view (different projects, construction, opening, technical and economical problems and their bankruptcy). In this article, this journalistic vision will be studied, as well as, its contrast with a professional and technical treatment. [ABSTRACT FROM AUTHOR]
- Published
- 2013
26. La evolución de los nudos viarios en España. Una guía para el diseño de nudos viarios.
- Author
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ROCCI, Sandro
- Subjects
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HIGHWAY engineering , *ROAD construction , *TRAFFIC circles , *ROAD interchanges & intersections , *TRAFFIC engineering , *VEHICLE design & construction - Abstract
The rules for designing highway junctions (intersections, interchanges and roundabouts) in Spain since the 'sixties are reviewed. These rules have been scant for the big development in highway construction in the same period. A des-cription is given of the development of the Guidelines for Highway Junctions, which have been introduced by a Circular Order of the Highways General Directorate in December, 2012: an endeavor of no small scope. The author of this article has acted as main Rappor-teur for its text. A description follows of the aim guiding the text of this new Guide, which strives to state the degree of binding carried by each of its provisions. The importance of operation is also stressed, human factors and driving aids; the latter must be taken into considerations from the very inception of the design. Two levels-of-service and seven design vehicles have been used as design criteria. The operation of the junction has been taken into account in detail, including interactions between contiguous junctions and the needs of special users (heavy goods vehicles, vulnerable users and transit). Starting from an analytical approach, a set of possible functional morphologies has been syn-thetized; and a method has been established for selecting the most suitable junction for a given case. Some details of the Guide, which are a relative novelty, are also examined. [ABSTRACT FROM AUTHOR]
- Published
- 2013
27. La calidad del servicio del transporte público para promocionar una movilidad más sostenible. Caso de estudio.
- Author
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DE OÑA LÓPEZ, Juan and DE OÑA LÓPEZ, Rocío
- Subjects
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PUBLIC transit , *TRANSPORTATION , *TRAFFIC engineering , *SUSTAINABLE development , *QUALITY of service , *CUSTOMER satisfaction , *DECISION trees - Abstract
Private vehicle is still the dominant mode of transport in motorized trips carried out by citizens, in spite of being the most ineficient and pollutant of all. Improving the quality of public transport services can produce a modal shift towards this more sustainable modes of transport. In this research and using data from customer satisfaction surveys, we applied decision trees for analyzing the service quality of the metropolitan public transport of Granada (Spain), in order to define transport strategies that leads towards a higher level of quality of the service and, conse-quetly, more satified passengers. This analysis is developed for the overall sample of users, but also for segments of passengers with more homogeneous opinions about the service. The stratification is performed according to passengers' travel reason. This stratification allows to formulate more personalized guidelines of improvement and not generic ones. [ABSTRACT FROM AUTHOR]
- Published
- 2013
28. La distribución urbana de mercancías. Un estudio de ingeniería del transporte.
- Author
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DELA TORRE, Alicia ARCO, REDONDO, Miguel CORRALES, IZQUIERDO GUILLÉN, Ma Dolores, LACRUZ, David LÓPEZ, SALAS, Pedro POURTAU, SATURNINO AYALA, Ma Teresa, and FELIU, Carlos TORRALBA
- Subjects
- *
FREIGHT & freightage , *TRANSPORTATION , *METROPOLITAN areas , *TRAFFIC engineering , *PARKING facilities - Abstract
This article summarises research that has been carried out in E.T.S.I. Caminos, Canales y Puertos de Madrid (UPM) into Urban Freight Distribution. An analysis is provided on the current situation of this sector in Spain, more specifically about the legal implications, the economic and environmental problems it causes, as well as feasible solutions, everything from the point of view of Transport Engineering. After that, as an example, the article examines the case of Valdemoro (Madrid). There, it is shown how a change in the layout of reserved parking areas can achieve important improvements on urban traffic, making the zone more efficient and sustainable. The article ends with some conclusions. [ABSTRACT FROM AUTHOR]
- Published
- 2013
29. Estimación del tiempo de viaje en autopista mediante fusión de datos.
- Author
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SORIGUERA, Francesc
- Subjects
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TRAVEL time (Traffic engineering) , *TRAFFIC monitoring equipment , *TOLL roads , *TRAFFIC engineering , *TRAFFIC surveys - Abstract
The ongoing development of new traffic monitoring technologies gives rise to a situation with multiple sources of data and multiple algorithms for the estimation of variables that may be of interest, among them information on travel time. This context with data from different sources, all of them imprecise to varying degrees, is the right one for applying data merging techniques. Their objective is to obtain a more reliable and precise merged value than that obtained from any individual estimations by themselves. This article presents a simple data merging methodology for the estimation of travel time on the highway. The proposed method uses data from loop detectors and toll tickets and would be easy to extend to other data sources. Its pilot application on the AP-7 highway has produced promising results. [ABSTRACT FROM AUTHOR]
- Published
- 2013
30. Propuesta de un nuevo modelo para la determinación de los niveles de servicio en autopistas para la gestión dinámica del tráfico.
- Author
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BELDA ESPLUGUES, Enrique, TOMÁS LÓPEZ, Vicente R., GOMAR, Ruth, SÁEZ, Arturo, and CARMONA, Diego
- Subjects
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TRAFFIC engineering , *ROAD safety measures , *INTELLIGENT transportation systems , *HIGHWAY engineering , *TRANSPORTATION engineering - Abstract
The application of new technologies to traffic engineering has allowed the development of Intelligent Transport Systems. ITS improve traffic management and increase road safety optimizing the use of the existing road infrastructure. ITS systems make easy traffic dynamic management. One of most used parameters in traffic management is the Level of Service. Currently, Level of Service are based on the Highways Capacity Manual from Transportation Research Board. However, the proposed model is completely static. Thus, this model is considered suitable for the dimensioning of future road network, but not for dynamic traffic management. This paper presents a new model for the identification of level of service in highways that allows a dynamic traffic management in real time. This model is based on the fundamental relation between speed and occupancy. [ABSTRACT FROM AUTHOR]
- Published
- 2013
31. CAPITAL EN MOVIMIENTO (CONGELADO).
- Author
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RIVERA, DANIEL ROMERO
- Subjects
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TRAFFIC congestion , *TRAFFIC flow , *TRAFFIC engineering , *ROAD construction - Abstract
Se trata el problema de la circulación en la Ciudad de México. Se asevera que el problema es debido en parte a la realización simultanea de varios proyectos importantes de construcción vial. Se informa que la aglomeración dura hasta 13 horas al día, según investigadores de la Universidad Nacional Autónoma de México (UNAM). Se sugiere que los problemas de circulación tienen un efecto negativo en el comercio en la ciudad.
- Published
- 2009
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