Prioritization methodology for roadside and guardrail improvement: Quantitative calculation of safety level and optimization of resources allocation

Loprencipe, Giuseppe; Moretti, Laura; Minati, Paolo

doi:10.1016/j.jtte.2018.03.004

Cited by 13 publications

(15 citation statements)

References 21 publications

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“…For example, in a case of the study of crosstown roads, Casado-Sanz, Guirao and Gálvez-Pérez [12] used AutoTURN software (a CAD-based measurement software that realistically simulates low-speed turn maneuvers for road vehicles) to measure the sequence of the road layout radius in the Spanish crosstown roads. Other authors have also successfully investigated the use of CAD in the road safety analysis [27,28]. Loprencipe, Moretti, Cantisani, et al [27] carried out a study that consisted of designing an innovative methodology that permits calculating and analyzing a numerical risk factor of a road, considering geometry design consistency, among other numerous variables.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Other authors have also successfully investigated the use of CAD in the road safety analysis [27,28]. Loprencipe, Moretti, Cantisani, et al [27] carried out a study that consisted of designing an innovative methodology that permits calculating and analyzing a numerical risk factor of a road, considering geometry design consistency, among other numerous variables. On the other hand, in other research, Demasi, Loprencipe and Moretti [28] proposed an analytical methodology for the estimation of urban branch road safety, in which they also considered road geometry layout.…”

Section: Literature Reviewmentioning

confidence: 99%

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Analysis of the Risk Factors Affecting the Severity of Traffic Accidents on Spanish Crosstown Roads: The Driver’s Perspective

2020

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Globally, road traffic accidents are an important public health concern which needs to be tackled. A multidisciplinary approach is required to understand what causes them and to provide the evidence for policy support. In Spain, one of the roads with the highest fatality rate is the crosstown road, a particular type of rural road in which urban and interurban traffic meet, producing conflicts and interference with the population. This paper contributes to the previous existing research on the Spanish crosstown roads, providing a new vision that had not been analyzed so far: the driver’s perspective. The main purpose of the investigation is to identify the contributing factors that increment the likelihood of a fatal outcome based on single-vehicle crashes, which occurred on Spanish crosstown roads in the period 2006-2016. In order to achieve this aim, 1064 accidents have been analyzed, applying a latent cluster analysis as an initial tool for the fragmentation of crashes. Next, a multinomial logit (MNL) model was applied to find the most important factors involved in driver injury severity. The statistical analysis reveals that factors such as lateral crosstown roads, low traffic volumes, higher percentages of heavy vehicles, wider lanes, the non-existence of road markings, and finally, infractions, increase the severity of the drivers’ injuries.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Analysis of the Risk Factors Affecting the Severity of Traffic Accidents on Spanish Crosstown Roads: The Driver’s Perspective

2020

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“…The problem is serious, as confirmed by the attention given to it at the international level [3,4]. The United Nations General Assembly declared the years 2011-2020 as a Decade of Action for Road Safety [5].…”

Section: Introductionmentioning

confidence: 99%

Safety Problems in Urban Cycling Mobility: A Quantitative Risk Analysis at Urban Intersections

Cantisani

Moretti

Barbosa

2019

Safety

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The attention to the most vulnerable road users has grown rapidly in recent decades. The experience gained reveals an important number of cyclist fatalities due to road crashes; most of which occur at intersections. In this study, dispersion of trajectories in urban intersections has been considered to identify the whole conflict area and the largest conflict areas between cars and bicycles, and the speeds have been used to calculate exposure time of cyclists and reaction time available to drivers to avoid collision. These data allow the summary approach to the problem, while a risk probability model has been developed to adopt an elementary approach analysis. A quantitative damage model has been proposed to classify each conflict point, and a probabilistic approach has been defined to consider the traffic volume and the elementary unit of exposure. The combination of damage and probability, permitted to assess the risk of crash, at the examined intersection. Three types of urban four-arm intersection, with and without bike paths, were considered. For each scheme, the authors assessed the risk of collision between the cyclist and the vehicle. The obtained results allowed the identification of the most hazardous maneuvers and highlighted that geometry and kinematics of traffic movements cannot be overlooked, when designing an urban road intersection. The strategy proposed by the authors could have a significant impact on the risk management of urban intersections. The obtained results and the proposed hazard estimation methodology could be used to design safer intersections.

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“…SFR j,r takes into account both the general characteristics of r (i.e., type and frequency of hazardous elements/defects, expected damage on vulnerable road users, and traffic level), and all n elements which affect the dangerousness of j. Equation (1), which complies with an approach recently proposed to analyze and plan maintenance of road safety barriers [32], allows us to calculate SFR j,r :…”

Section: Methodsmentioning

confidence: 99%

“…In recent years, much research has analyzed the results from statistical data and RSI to evaluate safety condition towards physical components of road-system [31][32][33]. The proposed methods permits us to assess, at section and branch level, the current level of safety for the most vulnerable users, to identify the most critical conditions, and to implement correct strategic decisions [34].…”

Section: Introductionmentioning

confidence: 99%

Road Safety Analysis of Urban Roads: Case Study of an Italian Municipality

Demasi

Loprencipe

Moretti

2018

Safety

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Attention to the most vulnerable road users has grown rapidly over recent decades. The experience gained reveals an important number of fatalities due to accidents in urban branch roads. In this study, an analytical methodology for the calculation of urban branch road safety is proposed. The proposal relies on data collected during road safety inspections; therefore, it can be implemented even when historical data about traffic volume or accidents are not available. It permits us to identify geometric, physical, functional, and transport-related defects, and elements which are causal factors of road accidents, in order to assess the risk of death or serious injuries for users. Traffic volume, average speed, and expected consequences on vulnerable road users in case of an accident allow us to calculate both the level of danger of each homogeneous section which composes the road, and the hazard index of the overall branch. A case study is presented to implement the proposed methodology. The strategy proposed by the authors could have a significant impact on the risk management of urban roads, and could be used in decision-making processes to design safer roads and improve the safety of existing roads.

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Prioritization methodology for roadside and guardrail improvement: Quantitative calculation of safety level and optimization of resources allocation

Cited by 13 publications

References 21 publications

Analysis of the Risk Factors Affecting the Severity of Traffic Accidents on Spanish Crosstown Roads: The Driver’s Perspective

Analysis of the Risk Factors Affecting the Severity of Traffic Accidents on Spanish Crosstown Roads: The Driver’s Perspective

Safety Problems in Urban Cycling Mobility: A Quantitative Risk Analysis at Urban Intersections

Road Safety Analysis of Urban Roads: Case Study of an Italian Municipality

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