Safety effects of traffic lane and shoulder widths on two-lane undivided rural roads: A matched case-control study from Norway

Pokorny, Petr; Jensen, Jan K.; Groß, Frank; Pitera, Kelly

doi:10.1016/j.aap.2020.105614

Cited by 25 publications

(17 citation statements)

References 35 publications

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“…Instead, it is used to find an approximation of the relative risk presented as an odds ratio. e odds ratio indicates the increased or decreased risk associated with a treatment [32]. It is expressed as the change in relative risk compared to a baseline.…”

Section: Methodsmentioning

confidence: 99%

“…Additionally, all tunnels and bridges over 20 m were excluded, along with intersections and all adjacent road sections within a radius of 100 m. Intersections were defined as intersections between ERF roads and roads with higher functional classes (thereby excluding forest, agriculture, and other low-class roads). e segmented network was initially created by Pokorny et al [32] and was reused, with slight modifications, for the current study. e modifications included adding a parameter on whether the adjacent curves met the Norwegian standard or not, to provide more detailed results related to horizontal alignment.…”

Section: Segmented Networkmentioning

confidence: 99%

“…Despite these differences, the results are considered comparable as the modification does not affect the way the road is segmented, only the categorization of the segments. Also, the way the data are structured within this study allows for the exclusion of the parameter on adjacent curves when comparing the results of the current study to the results of Pokorny et al [32]. For more details on the segmentation process, consult the referenced paper by Pokorny et al [32].…”

Section: Segmented Networkmentioning

confidence: 99%

“…is study described within this paper is also linked with a previous matched case-control study by Pokorny et al [32] that investigated the safety effects of lane and shoulder widths on single and head-on motor vehicle accidents on rural two-lane roads in Norway. In order to compare the findings, the same methodology and dataset have been applied.…”

Section: Introductionmentioning

confidence: 98%

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Safety Effects of Horizontal Curve Design and Lane and Shoulder Width on Single Motorcycle Accidents in Norway

Kvasnes

Pokorny

Jensen

et al. 2021

Journal of Advanced Transportation

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Factors related to the road infrastructure contribute to the occurrence of motorcycle accidents. This study investigates how design parameters of the existing rural two-lane road network in Norway influence the occurrence of single motorcycle accidents. The design elements considered in this study are horizontal curvature (curve type, degree of curvature, and adjacent curve requirements) and lane and shoulder widths. A matched case-control study design was applied to investigate the safety effects of these elements. Cases were defined as segments experiencing at least one single motorcycle accident during the study period from 2013 to 2017, while controls were defined as segments not experiencing an accident in the same period. In order to identify the segments, a GIS analysis was performed on data collected from the National Road Database (NVDB). In case-control studies, matching allows us to control for confounding variables. AADT and speed limit were used as matching variables in this study. A matching ratio of 4 : 1 (i.e., four controls per case) was used, resulting in 752 controls being matched to 188 cases. The results indicate horizontal alignment to have a more significant effect on single motorcycle accidents compared to lane and shoulder widths. Segments with several adjacent reverse curves, with high curvature (R < 200 m), have high odds for an accident. Further, if the requirements for adjacent curves are not fulfilled (i.e., considerable variation in adjacent curve radii), the odds increase even more. While the results are not statistically significant, trends seen indicate that wider lanes were associated with increased odds for an accident, while wider shoulders were associated with decreased odds. In comparison with a similar study considering passenger vehicles, the results of this study also indicate that horizontal alignment has a greater effect on single motorcycle accidents than on passenger vehicle accidents.

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Section: Methodsmentioning

confidence: 99%

Section: Segmented Networkmentioning

confidence: 99%

Section: Segmented Networkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Safety Effects of Horizontal Curve Design and Lane and Shoulder Width on Single Motorcycle Accidents in Norway

Kvasnes

Pokorny

Jensen

et al. 2021

Journal of Advanced Transportation

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show abstract

“…Although, the speed factor is an excellent generator of risk on rural roads, it is not the only one. The influence of rural road maintenance (Mathew, & Isaac, 2014), lane design (Russo, Busiello, & Dell, 2016), traffic and pedestrian flow (Tulu, Washington, Haque, & King, 2015), roughness (Sandamal, & Pasindu, 2020) and climatic conditions (Pokorny, Jensen, Gross, & Pitera, 2020) also play an important role when analyzing the exposure and increase in accidents on rural roads. Environmental conditions can directly affect the mechanical behavior of vehicles and the reaction capacity of drivers traveling on the roads (Drosu, Cofaru, & Popescu, 2020), in addition to technological distractors, as is the case with the use in full conduction of smartphones (Yannis, Laiou, Papantoniou, & Christoforou, 2014).…”

Section: Introductionmentioning

confidence: 99%

Análisis bibliométrico de los avances en el área de ingeniería y materiales en carreteras rurales

Gómez¹,

Torres²,

Buitrago³

et al. 2021

Competitive Risaralda, Generating Research Alliances for Development

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part of urban environments, characterized by low traffic, by interconnecting communities located in towns and villages, allow access to the agricultural market and the design speed is less than higher-ranking routes. Rural roads are extremely important infrastructure for the social and economic development of rural communities, often located in mountainous or semidesert places, where access to basic health and education services is very complex. In this paper, a bibliometric analysis has been applied to the theme of rural roads to identify the most important trends and influences, facilitating an organized view of the peculiarities and developments in their field of research. Consequently, a total of 433 publications made between 1968 and 2020 related to the term rural roads in Scopus were identified. The 433 publications contain 878 authors, 176 journals, 41 countries or territories, and 321 institutions. From the analysis completed, four main research areas related to the rural roads...

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Evaluation of the effect of roadside barrier type on lateral offsets in urban highways

Hosseini

Kordani

Zarei

et al. 2021

Innov. Infrastruct. Solut.

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Safety effects of traffic lane and shoulder widths on two-lane undivided rural roads: A matched case-control study from Norway

Cited by 25 publications

References 35 publications

Safety Effects of Horizontal Curve Design and Lane and Shoulder Width on Single Motorcycle Accidents in Norway

Safety Effects of Horizontal Curve Design and Lane and Shoulder Width on Single Motorcycle Accidents in Norway

Análisis bibliométrico de los avances en el área de ingeniería y materiales en carreteras rurales

Evaluation of the effect of roadside barrier type on lateral offsets in urban highways

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