Road Infrastructure Analysis with Reference to Traffic Stream Characteristics and Accidents: An Application of Benchmarking Based Safety Analysis and Sustainable Decision-Making

Shah, Syyed Adnan Raheel; Ahmad, Naveed

doi:10.3390/app9112320

Cited by 20 publications

(9 citation statements)

References 71 publications

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“…Despite the important decrease registered in the total number of fatalities in road traffic in developed countries during the last years, road safety is still a major problem around the world, and it has become the leading cause of premature death (Studer et al, 2018;Ptak, 2019;Llopis-Castelló and Findley, 2019;Shah and Ahmad, 2019). To give some figures, in the European Union (EU-28), the number of fatalities in collisions decreased from 57 006 to 25 767 between 2000 and 2016 (54,7%) (EUROSTAT, 2018).…”

Section: Introductionmentioning

confidence: 99%

Analysis of the efficiency of traffic lights turning red in case of exceeding speed limit

Pérez-Acebo

Otxoa-Muñoz²,

Marquina-Llaguno

et al. 2021

Ing. Inv.

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Due to the presence of various traffic calming measures (TCM) and traffic lights in urban areas, the speed of vehicles is maintained low. Nevertheless, a problem arises in the frontier between urban and non-urban areas because drivers must adapt their speed and behavior to new conditions. This risk becomes even greater in rural roads that penetrate small villages without a bypass and with a short urban segment, since drivers do not normally speed down in these segments. Various measures can be installed, but traffic lights that turn red if the speed limit is exceeded is not usually considered as a TCM in the literature. Therefore, this paper aims to analyze the efficiency of traffic lights turning red in case of exceeding speed limit. The village of Ábalos in Spain was selected for this research, with an urban area of 630 m and this type of traffic lights in both directions. Results showed that drivers do not respect the speed limit - and hence, the red light - when they are placed separately. However, if they are placed next to a crosswalk, their effect is increased. Consequently, it is recommended to place these traffic lights with a crosswalk to reinforce the efficiency of both TCMs.

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Section: Introductionmentioning

confidence: 99%

Analysis of the efficiency of traffic lights turning red in case of exceeding speed limit

Pérez-Acebo

Otxoa-Muñoz²,

Marquina-Llaguno

et al. 2021

Ing. Inv.

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“…This goal can be realized with the implementation of a spatiotemporal investigation of the intrinsic risk associated with different travel modalities [ 18 ]. Assuming spatiotemporal interactions as a basic factor shaping collision density [ 37 , 38 , 39 , 40 ], different approaches have been proposed for explicit analysis of processes interacting over space [ 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. Given the benefits associated with a comprehensive knowledge of temporal and spatial correlation among individual events [ 31 , 32 , 33 ], crash (frequency) data were usually aggregated over space and time [ 16 ], which may produce unobserved heterogeneity, as crashes that occur close in space or time are likely to share some unobserved characteristics [ 21 , 41 , 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

Unraveling Urban Form and Collision Risk: The Spatial Distribution of Traffic Accidents in Zanjan, Iran

Kalantari

Shahraki

Yaghmaei

et al. 2021

IJERPH

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Official statistics demonstrate the role of traffic accidents in the increasing number of fatalities, especially in emerging countries. In recent decades, the rate of deaths and injuries caused by traffic accidents in Iran, a rapidly growing economy in the Middle East, has risen significantly with respect to that of neighboring countries. The present study illustrates an exploratory spatial analysis’ framework aimed at identifying and ranking hazardous locations for traffic accidents in Zanjan, one of the most populous and dense cities in Iran. This framework quantifies the spatiotemporal association among collisions, by comparing the results of different approaches (including Kernel Density Estimation (KDE), Natural Breaks Classification (NBC), and Knox test). Based on descriptive statistics, five distance classes (2–26, 27–57, 58–105, 106–192, and 193–364 meters) were tested when predicting location of the nearest collision within the same temporal unit. The empirical results of our work demonstrate that the largest roads and intersections in Zanjan had a significantly higher frequency of traffic accidents than the other locations. A comparative analysis of distance bandwidths indicates that the first (2–26 m) class concentrated the most intense level of spatiotemporal association among traffic accidents. Prevention (or reduction) of traffic accidents may benefit from automatic identification and classification of the most risky locations in urban areas. Thanks to the larger availability of open-access datasets reporting the location and characteristics of car accidents in both advanced countries and emerging economies, our study demonstrates the potential of an integrated analysis of the level of spatiotemporal association in traffic collisions over metropolitan regions.

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“…In spite of the important decrease recorded in the total number of fatalities in road traffic during the last decades in developed countries, road safety remains a major problem in all countries, and is even considered a public health concern [1][2][3][4]. For example, in the European Union (EU-28) the number of fatalities in highway crashes decreased by 54.7% between 2000 and 2016 (from 57,006 to 25,767) [5].…”

Section: Introductionmentioning

confidence: 99%

A Series of Vertical Deflections, a Promising Traffic Calming Measure: Analysis and Recommendations for Spacing

et al. 2020

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Traffic calming measures (TCM) are placed in urban areas to improve road safety, and among them, vertical TCMs are widely employed. Many researches are focused on the influence of the geometry of each measure on speed reduction, but it is demonstrated that drivers forget its effect and speed up after it. Therefore, placing consecutive TCMs can help to maintain a safe area. However, scarce literature can be found about the adequate spacing between them. Hence, the aim of this paper is to analyze the adequate distance between TCMs. Various streets with variable distances and different vertical TCMs were evaluated in Poland and Spain, including raised crosswalks, raised intersections, speed humps and speed cushions. The intermediate point between two TCMs was selected as the place where the maximum speed is achieved. Results showed that there was a good correlation between the speeds at intermediate points and the distance between TCMs, with a determination coefficient around 0.80. For an 85th percentile of the speed under 50 km/h, a maximum distance of 200 m between TCMs is recommended, and for a value of 40 km/h, 75 m.

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Road Infrastructure Analysis with Reference to Traffic Stream Characteristics and Accidents: An Application of Benchmarking Based Safety Analysis and Sustainable Decision-Making

Cited by 20 publications

References 71 publications

Analysis of the efficiency of traffic lights turning red in case of exceeding speed limit

Analysis of the efficiency of traffic lights turning red in case of exceeding speed limit

Unraveling Urban Form and Collision Risk: The Spatial Distribution of Traffic Accidents in Zanjan, Iran

A Series of Vertical Deflections, a Promising Traffic Calming Measure: Analysis and Recommendations for Spacing

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