Francisco Calvo

Francisco Calvo
University of Granada | UGR · Department of Civil Engineering

Ph. D. in Civil Engineering

About

65
Publications
25,347
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
990
Citations
Citations since 2017
16 Research Items
701 Citations
2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
2017201820192020202120222023020406080100120140
Additional affiliations
September 2002 - present
University of Granada
Position
  • Professor

Publications

Publications (65)
Article
Full-text available
This study analyzes how economic resources invested in roads may affect mortality, depending on the level of economic development of a country. To this end, 23 European countries were classified into two groups—high-income countries and low-income countries—according to their average Gross Domestic Product (GDP) per capita over the period 1998–2016...
Article
Full-text available
Road markings may influence driver behavior, and therefore road safety. An increase in the width of road markings might lead drivers to perceive lanes to be narrower than they really are, creating the illusion of traveling faster. The objective of this paper is to analyze whether wider longitudinal road markings can affect the perception of lane wi...
Article
Full-text available
This study analyses the influence of economic resources invested in road infrastructures, both in construction and maintenance, upon injured traffic crashes. Furthermore, a set of control variables related to diverse factors was added: infrastructure, socioeconomics, meteorology and legislation. Consistent with this, a panel data model for the inte...
Article
Several works have addressed the impact of transport accessibility on regional development. Nevertheless, it is not consensual that new levels of accessibility lead to the improvement of regional development. This article proposes a methodological approach to assess whether significant relationship exist between these two variables. The methodology...
Conference Paper
Full-text available
En el presente estudio, se formula un modelo de datos de panel a nivel europeo con el fin de analizar la posible influencia de los recursos económicos invertidos en carreteras sobre la seguridad vial. Para ello, se utilizan datos correspondientes a veinte países europeos y durante un periodo de diecinueve años. Además, debido a la multitud de facto...
Conference Paper
Full-text available
El presente artículo analiza la influencia de los recursos económicos invertidos en la red viaria, tanto en construcción como en mantenimiento, sobre el número de fallecimientos producidos en la misma. Dada la multitud de factores de los que depende el tema de estudio, además de los recursos económicos invertidos, se incluye una serie de variables...
Article
Full-text available
Longitudinal road markings are a valuable aid in driving guidance. An increase in their width may influence driving and, therefore, road safety. Wider road markings generate a perception of a narrowing lane, which may induct drivers to reduce speed. The present study tries to verify if an increased width of longitudinal road markings actually helps...
Article
Full-text available
The aim of this study is to analyse whether the economic resources invested in roads—both investment in construction and expenditure on maintenance and conservation—have any influence on road fatality rates. Since this is a complex problem, and because there are many factors that can influence the fatality rate, other variables related to specific...
Article
Full-text available
In recent times, the increasing demand for mobility has given rise to new projects for improved public transport (PT) infrastructures. Such is the case of Andalucía (Spain) where, since 2004, the transit networks were improved and new underground and light rail systems were built. These investments were made without taking into account the opinion...
Conference Paper
Full-text available
A frequent criticism of new light rail transit systems is the negative visual impact of overhead power lines (catenary). Vehicle manufacturers have recognized this problem and developed systems that allow trams to operate without catenary. There are three main approaches: providing electricity from ground level systems, storing energy on-board the...
Article
Full-text available
En este artículo se analizan los impactos en la accesibilidad territorial en Andalucía de las actuaciones en carreteras planificadas por la Consejería de Fomento y Vivienda de la Junta de Andalucía. Para ello, se ha desarrollado una herramienta informática basada en Sistemas de Información Geográfica, y se han calculado una serie de indicadores de...
Article
In the last few years, ordinary least squares (OLS) models have been the most used regression models for estimating trips in urban areas. However, these models present some limitations, whose the most relevant is that they ignore the geographic variations of relationships among variables. On the other hand, the explanatory power of trip generation...
Article
Full-text available
The objective of this paper is to analyze if there is any difference between the light rail systems in Spain according to whether they have been carried out through public financing or private financing (totally or partially). The importance of this study lies in the fact that, for decades, the public–private partnership has been proposed as an alt...
Article
Full-text available
The development of quality policies applied to the public transport sector has increased the operators and managers interest in ensuring passengers’ satisfaction standards; therefore, their actions have been instrumented through the quality of service perception. In this context, the research project GESCAL performs a comparative analysis about the...
Article
Full-text available
Between 2017 and 2018, a survey was carried out in Coimbra (Portugal) on the implementation of a new mass transport system. The analysis of this survey looks into the opinion regarding two key questions: the need for this new mode of transport, and how much support is behind investing to implement. The application of Ordered Logit Models has led to...
Article
This study describes the influence on population and land use of the recent inauguration of commuter rail stations in the metropolitan area of Madrid (Spain) in the period 2000–2011. Population growth in recent residential developments in the vicinity of new commuter rail stations was found to be greater than in comparable areas lacking any urban r...
Article
Full-text available
The configuration of urban areas is the result of a cyclic relationship between land use and transportation system: the changes in transportation system arrangements influence the localisation of residence and economic activities, as well as the changes in land use affect transportation system characteristics. In this context, by operating on land...
Conference Paper
Full-text available
The configuration of urban areas is the result of a cyclic relationship between land use and transportation system: the changes in transportation system arrangements influence the localisation of residence and economic activities, as well as the changes in land use affect transportation system characteristics. In this context, by operating on land...
Conference Paper
Full-text available
En esta ponencia se presenta una herramienta creada en un Sistema de Información Geográfica (SIG) para el análisis de los efectos de infraestructuras de transporte mediante indicadores de accesibilidad. La herramienta está integrada en el módulo ArcMap de ArcGIS 10.3. Permite calcular cuatro indicadores de accesibilidad (tiempo medio ponderado, ind...
Conference Paper
Full-text available
In recent years, important public transport infrastructures projects have been carried out in Andalusia (Spain), some of them having an important impact on life in the metropolitan areas. Nevertheless, no studies have been done to know the citizens’ opinion concerning these projects. This article presents an analysis about the citizens’ perception...
Book
Full-text available
La Biblioteca BAUFERR se realizó durante el desarrollo del Proyecto de Innovación Docente (PID 13-32) financiado por el Programa de Innovación y Buenas Prácticas Docentes: Convocatoria 2013 de la Universidad de Granada. El mencionado proyecto consiste en la elaboración de una biblioteca audiovisual bilingüe cuya temática es la construcción, gestión...
Article
Full-text available
Passenger flow modeling and station dwelling time estimation are significant elements for railway mass transit planning, but system operators usually have limited information to model the passenger flow. In this paper, an artificial-intelligence technique known as fuzzy logic is applied for the estimation of the elements of the origin-destination m...
Article
Full-text available
One significant measure of the design quality of a road is consistency. In this study, consistency based on operating speed was calculated in two-lane rural highways of the province of Granada. Three consistency measures were calculated for 506 homogeneous road sections: the relative area, which represents the area bounded by the speed profile and...
Article
Full-text available
One technique used to improve highway safety from the point of view of the infrastructure is to examine the consistency of the design. Design consistency refers to if highway geometry is conformance to driver expectancy. When the consistency of the road is inadequate, the more likely it is that drivers will be startled and a crash will occur. The c...
Article
Full-text available
Consistency is the relationship between the geometric characteristics of a highway and the conditions a driver expects to encounter. In this study, based on operating speed, consistency was calculated in two-lane rural highways of the province of Granada, Spain. Three consistency measures were calculated for 506 homogeneous road sections: the relat...
Article
Full-text available
The passengers´ traffic and station dwelling time estimation are significant parameters for mass transit planning. Nevertheless, classical methodologies are not easy to apply in certain practical situations. This work presents a new approach that combines the origin destination matrices method with the application of fuzzy logic using as a case stu...
Article
Full-text available
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 infrastructure manager's service. Train running charges recover track-related costs and can help to develop a charging system that meets thes...
Article
Full-text available
Charges related to rail infrastructure capacity in the European rail network show great diversity and are not sufficiently transparent. This paper develops a simple and transparent methodology that takes the main aspects related to rail infrastructure capacity into consideration to give an approximated value of the maximum capacity charge (initial...
Article
Full-text available
According to different studies, speed reduction is considered one of the major factors in contributing road safety. For that reason, several guidelines have been recommended for maximum desirable speed reductions from tangents to horizontal curves and for maximum differentials between design and operating speeds on horizontal curves. The Interactiv...
Article
Full-text available
An effect on demand for passenger rail of the extension of the Spanish high-speed network is studied. Spain's HS network grew 552 km in 2005-2009, with new HS lines making direct links between Madrid and six new provincial capitals, including important cities such as Barcelona, Malaga and Valladolid. The expansion of the HS network reduced travel t...
Article
Full-text available
The development of new transport systems often leads to demographic and socioeconomic changes in the implementation area. The extent and the type of such impacts vary, however, and can depend on existing settlement patterns, socioeconomic conditions, and project objectives. For a better understanding of such impacts better, this paper examines the...
Article
Full-text available
One of the principal objectives of traffic accident analyses is to identify key factors that affect the severity of an accident. However, with the presence of heterogeneity in the raw data used, the analysis of traffic accidents becomes difficult. In this paper, Latent Class Cluster (LCC) is used as a preliminary tool for segmentation of 3229 accid...
Article
Full-text available
A key aspect to take into consideration when developing indices to evaluate transit service quality is to determine how much weight passengers give to each attribute when making a global assessment of service quality (SQ). The simplest method of a direct question in customer satisfaction survey (CSS) poses a number of problems, and therefore statis...
Article
Full-text available
Granada and its metropolitan area lie on the eastern edge of a basin where the foothills rise into the adjacent Sierra Nevada (3,482 m). On the west the valley is bordered by several faulted, Quaternary-age alluvial fans and by dissected terraces of the Genil River. Landscape evolution from about Tortonian to Pleisto-cene time is reflected by relic...
Conference Paper
Full-text available
La red de alta velocidad española ha crecido mucho en los últimos años, pasando a ser la segunda de Europa y la tercera del mundo en extensión. Este crecimiento se ha producido en un periodo de poco más de cuatro años y ha hecho posible reducir los tiempos de viaje por ferrocarril enormemente. Por lo tanto, este panorama presenta un marco ideal par...
Article
Full-text available
Several different factors contribute to injury severity in traffic accidents, such as driver characteristics, highway characteristics, vehicle characteristics, accidents characteristics, and atmospheric factors. This paper shows the possibility of using Bayesian Networks (BNs) to classify traffic accidents according to their injury severity. BNs ar...
Article
Full-text available
Residential areas of detached houses were built in north and east Madrid, Spain, during the last decade of the 20th century. Because the population density in those areas is low, implementing an efficient transport system is complicated. In south Madrid in the 1960s, however, huge commuter towns developed. Some of them were linked to a suburban net...
Article
Full-text available
This article describes one experiment that studied the influence of Daytime Running Lamps (DRL) on pedestrian detection of turn indicators. An experimental device including one DRL and one turn indicator was used in order to determine Visual Reaction Times (VRT) of 148 observers in different situations involving turn indicator activation. Such situ...
Conference Paper
Full-text available
En el actual sistema de tarificación español, el canon de acceso por derecho de utilización de la Red Ferroviaria de Interés General se determina en función de la declaración de actividad que realiza el sujeto pasivo de acuerdo con el nivel de tráfico previsto. El canon de acceso repercute en los costes que para el gestor suponen los procesos de...
Conference Paper
Full-text available
Indudablemente la ejecución de las actuaciones previstas en el Plan Estratégico de Infraestructuras y Transportes supondrá una mejora de la accesibilidad y contribuirá al crecimiento económico de todas las regiones y provincias españolas. Sin embargo, estos beneficios no se producirán de forma homogénea en todo el territorio nacional: habrá comunid...
Conference Paper
Full-text available
En este artículo se estudian los efectos de la reciente extensión de las líneas de metro de Madrid. Para ello se analiza la evolución del sistema de transporte, de la población y de los usos del suelo, en dicha área metropolitana. Los desarrollos de usos residenciales del suelo y los aumentos de población en torno a las nuevas estaciones de Metro h...
Conference Paper
Full-text available
This study presents a method for reducing the number of variables used in order to model injury severity of traffic accidents using a set of algorithms. All the possible combinations of evaluator-search algorithms were applied (59 combinations). The work developed in this study is divided into two stages; the first stage is performed based on selec...
Article
Full-text available
A part of track maintenance costs is directly related to train traffic, and therefore they are marginal costs in the short term. Track renewal costs over a longer period of time also increase with traffic, so they could be considered long-term marginal costs. Many different problems can arise when applying maintenance and renewal costs to railway u...
Article
Full-text available
The optimization of municipal waste collection can reduce management costs and negative impacts on the environment. This article analyzes municipal waste collection in Churriana de la Vega (Granada, Spain), and describes a way to improve waste collection service, based on the information provided by Geographic Information Systems. The results of ou...
Article
Full-text available
An extensive tramway network was developed in Granada at the turn of the 20th century. Until the 50’s, the network was a key method of transport between Granada and the province's towns and factories (mainly sugar factories). However, lack of investment, competition from road haulage and marginalization on the part of the local government brought i...
Conference Paper
Full-text available
Desde principios del siglo XX en Granada se desarrolló una importante red de tranvías. Esta red constituyó, hasta los años 50, el sistema esencial de transporte entre Granada y los pueblos y fábricas (principalmente azucareras) de la comarca. Sin embargo, la falta de inversiones, la competencia del transporte por carretera y la marginación de las a...
Article
Full-text available
A pricing methodology adapted to specific railroad infrastructures and the trains that use them is one way to ensure that railroad networks used by several different operators are used optimally. The diversity of railway networks (new lines and old lines) and services (long-distance and suburban passenger trains, freight trains, etc) makes it diffi...
Conference Paper
Full-text available
En el presente artículo se expone la historia del puente del Anchurón (línea Linares-Almería), describiendo con detalle la remodelación a la que fue sometido en los años setenta del siglo XX y que a la postre ha posibilitado la prolongación de su vida útil y la conservación de su valor histórico-artístico.
Conference Paper
Full-text available
Análisis de la tarificación por el uso de la infraestructura ferroviaria en España, basado en la comparación de los marcos tarifarios establecidos por los documentos legales aparecidos hasta 2006 (órdenes ministeriales de 2003 y 2005), y en el cálculo de los cánones a pagar según el tipo de servicio ferroviario.
Article
Full-text available
The opening of railroad infrastructure to new transport operators in Europe has made it necessary to develop a pricing system for its use. The European Union (EU) has proposed guidelines for establishing a similar pricing system for all EU members. Nonetheless, pricing systems continue to differ substantially from one country to another. These diff...
Article
Full-text available
The opening of railroad infrastructure to new transport operators in Europe has made it necessary to develop a pricing system for its use. The European Union (EU) has proposed guidelines for establishing a similar pricing system for all EU members. Nonetheless, pricing systems continue to differ substantially from one country to another. These diff...
Conference Paper
Análisis de los diferentes sistemas de tarificación por el uso de la infraestructura ferroviaria adoptados en algunos países europeos, con el fin de poder compararlos y realizar propuestas de cara a su armonización.
Conference Paper
Full-text available
RESUMEN Análisis de los diferentes sistemas de tarificación por el uso de la infraestructura ferroviaria adoptados en algunos países europeos, con el fin de poder compararlos y realizar propuestas de cara a su armonización.
Conference Paper
Análisis de los diferentes sistemas de tarificación por el uso de la infraestructura ferroviaria adoptados en algunos países europeos, con el fin de poder compararlos y realizar propuestas de cara a su armonización.
Conference Paper
RESUMEN Análisis de los diferentes sistemas de tarificación por el uso de la infraestructura ferroviaria adoptados en algunos países europeos, con el fin de poder compararlos y realizar propuestas de cara a su armonización.
Article
Full-text available
En ocasiones se atribuye a las obras públicas una longevidad que pocas veces alcanzan. Por ejemplo, los restos de muchas líneas ferroviarias de vía estrecha prácticamente han desaparecido tras un relativamente corto periodo de tiempo desde su cierre (unos 40 años podría ser la media en España). El deterioro de las instalaciones y la desaparición de...
Article
Full-text available
RESUMEN Se ha desarrollado una herramienta que permitirá a los alumnos familiarizarse con todos los ensayos típicos que se realizan en un laboratorio de materiales para carreteras. Los alumnos se enfrentarán al aprendizaje de estos contenidos mediante la navegación a través de una serie de pantallas en las que se presentan, para cada ensayo, una de...
Article
Full-text available
RESUMEN Con la introducción del Plan Bolonia surge la necesidad de realizar cambios en el actual sistema de enseñanza. El profesor debe asumir un nuevo rol en el que debe enseñar a aprender y evaluar el proceso de aprendizaje realizado por el alumno. Además el Plan Bolonia persigue una enseñanza práctica en la que parte del aprendizaje del alumno,...
Article
Full-text available
RESUMEN La declaración de Bolonia sienta las bases para un nuevo sistema universitario, cuya finalidad será construir un Espacio Europeo de Educación Superior, y lograr una enseñanza universitaria de alta calidad, centrada en el alumno. Esto conlleva una verdadera transformación de la Universidad, donde la clase se convierte en un tiempo dedicado a...
Article
Full-text available
Tesis Univ. Granada. Departamento de Ingeniería Civil. Leída el 17 de diciembre de 2007

Network

Cited By

Projects

Projects (10)
Archived project
El presente proyecto tiene como objetivo principal mejorar la metodología standard para detección de TCA utilizada en España mediante la aplicación del Método Empírico de Bayes. La metodología standard sólo utiliza el número de accidentes observados para la estimación de un TCA, mientras que la metodología empírica de Bayes está basada en el número de accidentes previstos en una carretera según sus características y en el número de accidentes ocurridos u observados en la misma. Aunque muchos autores coinciden en la recomendación del método Empírico de Bayes, la mayoría de administraciones, al igual que la española, no lo utilizan porque su implantación implica un gran esfuerzo de recogida de datos, interconexión de diferentes bases de datos de diferentes administraciones. La aplicación del método Empírico Bayesiano en la Red Complementaria de Carreteras de Andalucía (carreteras con más de 500 vehículos de IMD), permitirá mejorar el método de identificación de TCA actual, evitando que se actúe en tramos que realmente son seguros y que erróneamente han podido ser clasificados como peligrosos.
Archived project
The main objective of this research is to study whether using wider longitudinal road markings on rural highways would reduce speed in potentially dangerous sections (dangerous curves, crossings, accident concentration sections, etc.). The reduction in speed would improve road safety, reduce energy consumption and the emission of greenhouse gases into the atmosphere, and promote sustainable road transport for passengers and goods.
Archived project
Dr. Francisco Javier Calvo Poyo (España), Dra. Aránzazu Berbey Álvarez (Panamá). Convocatoria de movilidad extracomunitaria de los profesores europeos. CONVOCATORIA DE AYUDAS PARA LA MOVILIDAD EXTRACOMUNITARIA DE PROFESORADO EN EL MARCO DE CONVENIOS BILATERALES DE LA UGR. Programa 3.2. del Plan Propio de Internacionalización 2014Resolución de 7 de mayo de 2014 del Vicerrectorado de Relaciones Internacionales y Cooperación al Desarrollo por la que se publica la primera resolución con resultados provisionales de adjudicación de ayudas para la movilidad extracomunitaria de profesorado en el marco de convenios bilaterales de la UGR.2014.