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Browsing by UPV Unit "Universitat Politècnica de València. Departamento de Ingeniería e Infraestructura de los Transportes - Departament d'Enginyeria i Infraestructura dels Transports"

Now showing items 1-20 of 390

A New Traffic-Calming Device: Speed Kidney

García García, Alfredo; Moreno Chou, Ana Tsui; Romero Rojas, Mario Alfonso (Institute of Transportation Engineers, 2012-12)

[EN] The speed kidney is a new traffic-calming device that consists of a raised and curved area placed at the center of any lane. Drivers can choose to adopt a curved path, moderating speeds but avoiding disadvantages of ...
A procedure for the evaluation of vibrations induced by the passing of a train and its application to real railway traffic

Salvador Zuriaga, Pablo; Real Herráiz, Julia Irene; Zamorano, Clara; Villanueva, Antonio (Elsevier, 2011-01)

In recent years, ground vibrations have become an important issue due to the growing awareness of the society about environmental living conditions. In this way, vibrations caused by trains running near houses or workplaces ...
A proposal for cost-related and market-oriented train running charges

Calvo, F.; De Oña, J.; De Oña, R.; López-Maldonado, Griselda; Garach, L. (Taylor & Francis, 2014-05-19)

[EN] This paper examines some key aspects of a charging system for promoting railway transport, including charges reflecting a clear relationship with costs (transparency) and charges reflecting the quality of the ...
A QUALITATIVE STUDY ON THE ROLE OF THE BUILT ENVIRONMENT FOR SHORT WALKING TRIPS

Ferrer López, Sheila; Ruiz Sánchez, Tomás; Mars, L. (ELSEVIER SCI LTD, 2015-08)

The present study uses a qualitative approach with the aim to identify built environmental factors influencing short walking distances for transportation among adults (18-65 years), with special attention to micro-scale ...
A review of modelling and optimisation methods applied to railways energy consumption

Martínez Fernández, P.; Villalba Sanchis, Ignacio; Yepes, V.; Insa Franco, Ricardo (Elsevier, 2019)

[EN] Railways are a rather efficient transport mean, and yet there is increasing interest in reducing their energy consumption and making them more sustainable in the current context of climate change. Many studies try to ...
A review of the analyses of ocean wave groups

Medina, Josep R.; Hudspeth, R. T. (Elsevier, 1990)

[EN] The most common parameters and functions used to characterize wave groups in linear seas are reviewed and interrelated in a unified manner. A three-axes representation of run lengths is used to characterize wave groups ...
Adecuación del tramo de la CV-25 entre el PK 6+930 y el PK 20+580 para la integración del tráfico ciclista, mejora de la seguridad vial y la funcionalidad.

Cervera Martínez, Guillem (2020-04-30)

[ES] Dado el gran aumento del uso de la bicicleta como medio de transporte y también en su vertiente ocio-deportiva, las carreteras, en su nueva situación de mayor diversidad de usuarios, han sufrido un incremento de los ...
Alternativas para el transporte aéreo de mercancías.

Mateu Céspedes, José María (2018-03-13)

Este objeto de aprendizaje comienza por exponer las distintas tipologías de aeronaves para el transporte de mercancías, mostrando ejemplos. A continuación se profundiza en las ventajas e inconvenientes del transporte de ...
An analytical model for the prediction of thermal track buckling in dual gauge tracks

Villalba Sanchis, Ignacio; Insa Franco, Ricardo; Salvador Zuriaga, Pablo; Martínez Fernández, Pablo (SAGE Publications, 2018)

[EN] In rail transport, track gauge is one of the principal factors that condition the passage of trains. For technical and economic reasons, in some circumstances it is necessary to build and operate the so-called dual ...
An artificial neural network model as a preliminary track design tool

Montalbán Domingo, María Laura; Fernández-Villa, J. A.; Masanet Sendra, Claudio; Real Herráiz, Julia Irene (SAGE PUBLICATIONS LTD, 2015)

The formula derived from Zimmermann s theory is commonly used in railway track design. However, this formula depends on variables such as the ballast coefficient, which are difficult to determine. In recent years, numerical ...
An Energy-efficient Metro Speed Profiles for Energy Savings: Application to the Valencia Metro

Villalba Sanchis, Ignacio; Salvador Zuriaga, Pablo (Elsevier, 2016)

[EN] Nowadays one of the main priorities for metro line operators is the reduction of energy consumption, due to the environmental impact and economic cost. In order to achieve this objective different strategies can be ...
An energy-efficient metro speed profiles for energy savings: application to the Valencia metro

Villalba Sanchis, Ignacio; Salvador Zuriaga, Pablo (Editorial Universitat Politècnica de València, 2016-06-01)

[EN] Nowadays one of the main priorities for metro line operators is the reduction of energy consumption, due to the environmental impact and economic cost. In order to achieve this objective different strategies can be ...
An Evaluation of the Resilient Modulus and Permanent Deformation of Unbound Mixtures of Granular Materials and Rubber Particles from Scrap Tyres to Be Used in Subballast Layers

Hidalgo Sgnes, Carlos; Martínez Fernández, Pablo; Garzón Roca, Julio; Garrido de la Torre, Mª Elvira; Insa Franco, Ricardo (Editorial Universitat Politècnica de València, 2016-06-01)

[EN] Over the last years rubber from scrap tyres has been reused in different civil works such as road embankments and railway platforms due to its resilient properties, low degradation and vibration attenuation. Unfortunately, ...
Analysis of false waves in numerical sea simulations

Giménez Valentín, Marcos Herminio; Sánchez Carratalá, Carlos Rafael; Medina, Josep R. (Elsevier, 1994)

[EN] It is common practice to consider the random sea waves as a succession of discrete waves characterized by individual amplitudes and periods. The zero-up-crossing criterion for discretizing waves, as well as other ...
Analysis of the impact of adverse weather on freeway free-flow speed in Spain

Camacho-Torregrosa, Francisco Javier; García García, Alfredo; Esplugues Belda, Enrique (Transportation Research Board, 2010)

[EN] Weather conditions affect traffic flow characteristics, including speed and capacity. Several studies have stated that rain, snow, wind speed, and visibility loss cause reductions in speed and capacity. Understanding ...
Analysis of the influence of 3D coordination on the perception of horizontal curvature using driving simulator

García García, Alfredo; Tarko, Andrew; Dols Ruiz, Juan Francisco; Moreno Chou, Ana Tsui; Calatayud, D. (Carlos Benedetto, 2011)

[EN] The presented research used a driving simulator to study the effect of isolated vertical crest curves overlapped with horizontal curves on driver¿s perception and behavior. The curves were consistent with the existing ...
Analysis of the influence of cracked sleepers under static loading on ballasted railway tracks

Montalbán Domingo, María Laura; Zamorano Martin, C.; Palenzuela Aviles, C.; Real Herráiz, Julia Irene (Hindawi Publishing Corporation, 2014)

The principal causes of cracking in prestressed concrete sleepers are the dynamic loads induced by track irregularities and imperfections in the wheel-rail contact and the in-phase and out-of-phase track resonances. The ...
Analysis of the Influence of Geometric Design Consistency on Vehicle CO2 Emissions

Llopis-Castelló, David; Camacho-Torregrosa, Francisco Javier; García García, Alfredo (Elsevier, 2019)

[EN] Highway vehicles driving on rural roads account for more than 50% of all CO2 emissions produced by the transportation sector in Europe. Although the policy measures to mitigate Greenhouse Gas emissions are increasing, ...
Analysis of the influence of under sleeper pads on the railway vehicle/track dynamic interaction in transition zones

Insa Franco, Ricardo; Salvador Zuriaga, Pablo; Inarejos Mesa, Javier; Roda Buch, Alejandro (SAGE PUBLICATIONS LTD, 2012)

[EN] Sharp changes in the vertical stiffness levels of a track can increase train and infrastructure deterioration to the point where there is a serious risk of a derailment. Major overloading and unloading forces are ...
Analysis of the Logistics of Home Delivery of Food and Household Goods. Implementation in Consum in the Valencia Area. Proposals for Improvement

Arroyo-López, María Rosa; Colomer Ferrandiz, José Vicente (Elsevier, 2016)

[EN] The problem of urban distribution in large cities, particularly the home delivery of goods, does not have a simple solution, given that it involves a range of different factors and parties with different interests. ...