Search results for "road"
showing 10 items of 851 documents
Pavement Management System model using a LCCA- microsimulation integrated approach
2014
The maintenance and the rehabilitation of the urban road pavements are not often based on systematic program and scheduling but rather on emergency or on other not identified reasons. Moreover the Life Cycle Cost Analysis (LCCA), the only peculiar procedure for the management pavement, finds its own application for highway and motorway, even if it is possible to search the best investment for the urban interstate and arterials. By the light of the quantity of the involved resources, it seems necessary to define an operative methodology for programming the maintenance and rehabilitation activities for the urban pavement. The paper is oriented towards the development of a multidisciplinary ap…
A multidisciplinary approach using LCCA and micro-simulation 10 model for the management of the urban pavements
2013
The maintenance and the rehabilitation of the urban road pavements are not often based on systematic program and scheduling but rather on emergency or on other not identified reasons. Moreover the Life Cycle Cost Analysis (LCCA), the only peculiar procedure for the management pavement, finds its own application for highway and motorway, even if it is possible to search the best investment for the urban interstate and arterials. By the light of the quantity of the involved resources, it seems necessary to define an operative methodology for programming the maintenance and rehabilitation activities for the urban pavement. The paper is oriented towards the development of a multidisciplinary ap…
Comparison of Road Safety Policy Objectives in Poland and in the European Union
2016
The aim of the chapter is to identify main actions undertaken within the Polish road safety policy and to assess its efficacy based on the system approach, as well as to present recommendations for enhancing road safety in Poland. In the first part of the chapter key objectives of the EU road safety policy are elaborated. Then, the situation in Poland related to the number of road fatalities and to the causes of accidents is described, and policy instruments in Poland are presented. In the last part of the text an attempt is made to evaluate the Polish road safety policy. Besides, recommendations for improving road safety performance in Poland are elaborated on. In conclusion, it is stated …
Cost-benefit analysis of road safety measures
2013
Road accidents represent one of the most serious problems faced by the Ministries of Public Health in the World. In Italy for example, in the year 2007 there were almost 330, 000 injuries and 5, 131 fatalities; 230, 871 crashes in all which resulted in an estimated € 30.4 billion financial loss, corresponding to 2% of GDP. In 1999 the National Road Safety Plan (NRSP), among other things, funded the requalification of several unsafe road infrastructures at higher risk of accidents. Unlike other infrastructure investment plans, NRSP usually requires: i) specific safety analysis of crash history to identify the critical road; ii) proactive action, e.g. RSAs and RSARs; iii) before-after acciden…
Standardization of Road Danger Signs in the European Union
2015
The aim of this research is to find a solution for the standardization of road signs in the EU zone by a comparative analysis of different national sign systems to establish a common set from a single country. This work is based on the idea that road sign standardization might increase the safety level of transnational journeys and foster the relationships among the various members of the EU Community. This paper presents the outcome of the first step of the research, which focuses on the harmonization of danger signs. In more detail, a multicriteria approach is applied to rank 19 EU Member States on the basis of three main aspects: the installation cost of new signs, new sign learning issu…
Apparato per tracciare lo stato della superficie di un pavimento e procedimento di bilanciamento dinamico di un tale apparato
2016
Classification of Venezuelan affiliates according to their conditions for the local environment
2007
El objetivo del artículo es proponer una clasificación de filiales venezolanas de empresas multinacionales según sus condiciones frente al entorno local. Para ello se usa una metodología cualitativa con estudios de ca-sos de filiales localizadas en Venezuela y se emplean como dimensiones el determinismo del entorno y la proactividad de la filial. Se identifican cuatro grupos de filiales: favorecidas, desfavorecidas, adaptadas y aventajadas. Se exponen los elementos que sirven para construir cada categoría, los efectos que se observaron en los roles de las filiales y las respuestas de los directivos en cada grupo, tanto en la filial como en la matriz, frente a las condiciones del entorno. Th…
Nasium : Sondage archéologique à Saint-Amand-sur-Ornain " Le Cul de Breuil "
2010
Ce rapport de fouille présente les résultats d'un sondage archéologique mené au cœur du site de Nasium, à l'interface entre l'oppidum celtique et l'agglomération antique. Le système de voirie qui relie ces deux , dans le prolongement d'une des portes principales de l'oppidum, a été ainsi révélé, associé à des structures à caractère funéraire ou rituel. La chronologie de ces vestiges, centrée sur les dernières décennies du Ier siècle avant J.-C., correspond à la période durant laquelle l'oppidum est abandonné au profit de la plaine alluviale de l'Ornain. Par ailleurs, la découverte de plusieurs centaines de clous de chaussure militaires et de céramiques d'origine italique pose la question du…
Safety diagnostic method in urban circular intersections
2004
The available knowledge of traffic safety at roundabouts is not a complete reference for geometric design; where there are organizational schemes for junctions characterized by a geometric design, quite different driving behaviours are required from those that are observable at roundabouts. This is very frequent in urban areas, where the existing constraints, particularly physical ones, often render it necessary to make “compromise choices” relating to one or more geometric features of the roundabout (central island shape, circulatory roadway width, symmetry and number of the arms, entry width, etc). The objective of this study is to explain the accident phenomenology of this kind of road s…