scholarly journals Propuesta de implementación de alternativas de seguridad vial, mediante el análisis comparativo de manuales de diseño geométrico y/o seguridad vial de América (Perú, Chile, Bolivia, México y USA) – Aplicado a cuatro distritos del cono sur de Lima metropolitana

2020 ◽  
Author(s):  
◽  
Leonard Nelson Cordero Campos ◽  
◽  
Héctor Daniel Huapaya Tenazoa
Keyword(s):  
Highway Safety ◽  
Seguridad Vial ◽  
Highway Safety Manual ◽  
San Bartolo ◽  
Santa Maria

Según la OMS, los accidentes de tránsito son una de las causas de mortalidad más grande que existe en el mundo actualmente. El Perú no es ajeno a esta situación, debido al aumento de la población, educación vial deficiente, mal manejo del parque automotor, los accidentes han aumentado considerablemente durante las últimas décadas. Durante el desarrollo del presente trabajo, se plantea y se presentan alternativas de solución en seguridad vial, para el caso práctico en el sur de Lima dentro de los km 35 y 55 de la carretera Panamericana Sur, en los distritos de Punta Hermosa, Punta Negra, San Bartolo y Santa María del Mar. Se realizó el levantamiento y comparativa de información en base a los manuales a trabajar, se exponen las metodologías para el análisis vial, la cual se basó en la recolección de información de estándares de los países Chile, Bolivia, México y USA – usando herramientas de Highway Safety Manual (HSM) – estos incluyen señalización, vertical y horizontal, dispositivos de seguridad y facilidades peatonales. Se desarrollan cuadros comparativos, con los cuales serán aplicados al caso práctico a evaluar Se define el TCA ubicado entre las progresivas 49+400 hasta 50+300, siendo este tramo el que contara con mejoras en seguridad vial. Aplicando la metodología predictiva del HSM se obtiene el valor de Nprevisto (accidentes previstos en la zona). Finalmente, se obtiene un porcentaje de disminución de los accidentes a partir de la aplicación de los valores FMC de Clearinghouse

scholarly journals Accidentabilidad y rediseño de la carretera poroy - urubamba, aplicando el modelo de predicción de accidentes en vías rurales del manual norteamericano highway safety manual 2010

2019 ◽  
Vol 7 (01) ◽  
pp. 339-346
Author(s):  
Jean Fernando Perez Montesinos
Keyword(s):  
Highway Safety ◽  
Seguridad Vial ◽  
Highway Safety Manual

La inexistencia de metodologías en el Perú para la evaluación y rediseño de carreteras e infraestructura vial con alta presencia de accidentes de tránsito no permite salvar vidas humanas mediante la prevención de estos siniestros aplicando la seguridad vial. El objetivo fue calibrar el modelo de predicción de accidentes en condiciones locales (peruanas), siendo el mejor aporte para obtener validez en su aplicación práctica por ingenieros viales locales. La investigación fue desarrollada por profesionales especializados en la ingeniería de transportes y seguridad vial. La metodología tiene el propósito de identificar primero los segmentos de alto riesgo y dar el tratamiento pertinente. Con el modelo de predicción calibrado se procedió a hacer modificaciones en las variables como la geometría para reducir potenciales accidentes. Los resultados fueron satisfactorios, el promedio de calibración obtenido fue de 1.06, que describe errores pequeños pese a limitaciones. Se concluye que, es posible en primer lugar aplicar la metodología norteamericana en el Perú, se redujeron los accidentes hasta un 40%, siendo este un gran impacto si estimamos la vida humana en el valor dado por la Organización Mundial del a Salud. Esta metodología es el único método de predicción de accidentes a nivel mundial y el más probado en el mundo en los últimos años en varios continentes, permitirá a los ingenieros y políticos peruanos velar por la seguridad vial de una forma científica y demostrada

New Intersection Crash Prediction Models for the Second Edition of the Highway Safety Manual

2021 ◽  
pp. 036119812110398
Author(s):  
Darren J. Torbic ◽  
Daniel Cook ◽  
Joseph Grotheer ◽  
Richard Porter ◽  
Jeffrey Gooch ◽  
...  
Keyword(s):  
Traffic Control ◽  
Prediction Models ◽  
Highway Safety ◽  
Crash Severity ◽  
Crash Prediction ◽  
Part C ◽  
Highway Safety Manual ◽  
Rural And Urban ◽  
Diamond Interchanges ◽  
Crash Prediction Models

The objective of this research was to develop new intersection crash prediction models for consideration in the second edition of the Highway Safety Manual (HSM), consistent with existing methods in HSM Part C and comprehensive in their ability to address a wide range of intersection configurations and traffic control types in rural and urban areas. The focus of the research was on developing safety performance functions (SPFs) for intersection configurations and traffic control types not currently addressed in HSM Part C. SPFs were developed for the following general intersection configurations and traffic control types: rural and urban all-way stop-controlled intersections; rural three-leg intersections with signal control; intersections on high-speed urban and suburban arterials (i.e., arterials with speed limits greater than or equal to 50 mph); urban five-leg intersections with signal control; three-leg intersections where the through movements make turning maneuvers at the intersections; crossroad ramp terminals at single-point diamond interchanges; and crossroad ramp terminals at tight diamond interchanges. Development of severity distribution functions (SDFs) for use in combination with SPFs to estimate crash severity as a function of geometric design elements and traffic control features was explored; but owing to challenges and inconsistencies in developing and interpreting the SDFs, it was recommended for the second edition of the HSM that crash severity for the new intersection configurations and traffic control types be addressed in a manner consistent with existing methods in Chapters 10, 11, and 12 of the first edition, without use of SDFs.

scholarly journals Comparison of Different Road Segmentation Methods

2019 ◽  
Vol 31 (2) ◽  
pp. 163-172
Author(s):  
Maen Qaseem Ghadi ◽  
Árpád Török
Keyword(s):  
Road Safety ◽  
Road Network ◽  
Highway Safety ◽  
Segmentation Method ◽  
Constant Length ◽  
Highway Safety Manual ◽  
Segmentation Methods ◽  
Average Annual Daily Traffic ◽  
Clustering Approach ◽  
Road Segmentation

In road safety, the process of organizing road infrastructurenetwork data into homogenous entities is called segmentation.Segmenting a road network is considered thefirst and most important step in developing a safety performancefunction (SPF). This article aims to study the benefitof a newly developed network segmentation method which is based on the generation of accident groups applying K-means clustering approach. K-means algorithm has been used to identify the structure of homogeneous accident groups. According to the main assumption of the proposed clustering method, the risk of accidents is strongly influenced by the spatial interdependence and traffic attributes of the accidents. The performance of K-means clustering was compared with four other segmentation methods applying constant average annual daily traffic segments, constant length segments, related curvature characteristics and a multivariable method suggested by the Highway Safety Manual (HSM). The SPF was used to evaluate the performance of the five segmentation methods in predicting accident frequency. K-means clustering-based segmentation method has been proved to be more flexible and accurate than the other models in identifying homogeneous infrastructure segments with similar safety characteristics.

Developing Crash Modification Factors for Horizontal Curves on Rural Two-Lane Undivided Highways Using a Cross-Sectional Study

2017 ◽  
Vol 2636 (1) ◽  
pp. 53-61 ◽  
Author(s):  
Lingtao Wu ◽  
Dominique Lord ◽  
Srinivas Reddy Geedipally
Keyword(s):  
Regression Models ◽  
Cross Sectional Study ◽  
Highway Safety ◽  
Sectional Study ◽  
Cross Sectional ◽  
Highway Safety Manual ◽  
Horizontal Curves ◽  
Before And After ◽  
Crash Modification Factors ◽  
Curve Radius

Horizontal curves have been identified as experiencing more crashes than tangent sections on roadways, especially on rural two-lane highways. The first edition of the Highway Safety Manual provides crash modification functions (CM functions) for curves on rural two-lane highways. The CM functions proposed in the manual may suffer from both outdated data and analysis technique. Before-and-after studies are usually the preferred method for estimating the safety effects of treatments. Unfortunately, this method is not feasible for curves. Previous studies have frequently used regression models for developing CM functions for horizontal curves. As recently documented in the literature, some potential problems exist with using regression models to develop crash modification factors. This research utilized a cross-sectional study to develop curvature CM functions. Curves located on Texas rural two-lane undivided highways were divided into a number of bins based on the curve radius. Safety was predicted with the assumption that these curves had been tangents. The observed number of crashes that occurred on the curves was compared with the dummy tangents and for different bins. The results showed that the horizontal curve radius has a significant role in the risk of a crash. From these results, a new CM function was developed. The prediction performance of the Highway Safety Manual CM function was compared with the new CM function in this study and another function that was recently proposed in the literature. It was found that the new CM function documented in this study outperformed both.

scholarly journals Application of Highway Safety Manual to Italian Divided Multilane Highways

2012 ◽  
Vol 53 ◽  
pp. 910-919 ◽  
Author(s):  
Salvatore Cafiso ◽  
Giacomo Di Silvestro ◽  
Giovanni Di Guardo
Keyword(s):  
Highway Safety ◽  
Highway Safety Manual
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