Updated estimates of the relationship between speed and road safety at the aggregate and individual levels

Elvik, Rune; Vadeby, Anna; Hels, Tove; Schagen, Ingrid van

doi:10.1016/j.aap.2018.11.014

Cited by 111 publications

(66 citation statements)

References 30 publications

(15 reference statements)

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“…The relationship between the speed and the road traffic safety is not just statistical, but it is causal as well [7]. The continuous authoritative research only confirms these provisions [8].…”

Section: The Reasons and The Circumstances Of The Road Accidentsmentioning

confidence: 99%

Analysis of the State of the Road Traffic Safety in the Republic of Kazakhstan

Ибраев¹,

Ibraev²,

Капский

et al. 2019

Nauka teh.

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The article presents the results of the study of the road traffic safety on the automobile roads of the Republic of Kazakhstan. We performed the analysis of the main indicators, specifying the state of the road traffic safety on the automobile roads of the republican significance of the Republic of Kazakhstan. In many regulatory acts, such as “The Priority Action Plan for Improving the Road Traffic Safety of the Republic of Kazakhstan for 2017–2020”, developed with the support of the Asian Development Bank, and in the “National Concept of Road Traffic Safety” project as well , developed by the Interdepartmental Research Institute called “The Academy of Law Enforcement Agencies” of the General Prosecutor’s Office of the Republic of Kazakhstan, the urgent need to improve road traffic safety is clearly pointed. At the same time, it is necessary to have the information about the extent of the existing problem in the field of road traffic safety, which is ensured by the constant consideration and analysis of the statistical indicators, as well as by planning appropriate measures aimed at correcting the situation and achieving planned indicators in the framework of, for example, the national concept of road traffic safety. Currently, statistics on road traffic accidents, occurring in Kazakhstan, are published by the Committee on Statistics of the Republic of Kazakhstan and the Committee on Legal Statistics and Special Accounting. However in the current situation, this is not enough, especially since the ARC MIID of the Republic of Kazakhstan outlined the program of actions aimed at eliminating the existing shortcomings in the field of the road traffic safety and significant improving its indicators. The analytical investigation of the status of the road traffic safety on the roads of the Republic of Kazakhstan was carried out. This will become a kind of starting point in the consistent work in this direction, which will provide the interested parties, first of all the experts, with the high-quality and reliable information about the main figures, characterizing the state of safety of the road users. Based on objective accident data, it is possible to take the effective measures aimed at improving the situation on the roads of the Republic of Kazakhstan.

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Section: The Reasons and The Circumstances Of The Road Accidentsmentioning

confidence: 99%

Analysis of the State of the Road Traffic Safety in the Republic of Kazakhstan

Ибраев¹,

Ibraev²,

Капский

et al. 2019

Nauka teh.

View full text Add to dashboard Cite

show abstract

“…has been widely demonstrated to be positively correlated with crash frequency (El-Basyouny and Sayed, 2009;Gomes, 2013;Wang et al, 2015b). While the safety effects of travel speed are not consistent among existing studies, many studies suggested that higher average speed tends to increase the crash frequency (Aarts and Van Schagen, 2006;Elvik, 2009;Nilsson, 2004;Taylor et al, 2002), as higher speed increases the drivers' overall stopping distance which may in turn increase the probability of crash occurrence (Wang et al, 2013). However, some researchers found that the average speed is negatively associated with crash frequency (Baruya, 1998;Stuster, 2004).…”

Section: Literature Review Aggregated Arterial Safety Analysismentioning

confidence: 99%

Utilizing bluetooth and adaptive signal control data for real-time safety analysis on urban arterials

Yuan

Abdel-Aty

Wang

et al. 2018

Transportation Research Part C: Emerging Technologies

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Real-time safety analysis has become a hot research topic as it can more accurately reveal the relationships between real-time traffic characteristics and crash occurrence, and these results could be applied to improve active traffic management systems and enhance safety performance. Most of the previous studies have been applied to freeways and seldom to arterials. This study attempts to examine the relationship between crash occurrence and realtime traffic and weather characteristics based on four urban arterials in Central Florida. Considering the substantial difference between the interrupted urban arterials and the access controlled freeways, the adaptive signal phasing data was introduced in addition to the traditional traffic data. Bayesian conditional logistic models were developed by incorporating the Bluetooth, adaptive signal control, and weather data, which were extracted for a period of 20 minutes (four 5-minute intervals) before the time of crash occurrence. Model comparison results indicated that the model based on 5-10 minute interval dataset performs the best. It revealed that the average speed, upstream left-turn volume, downstream green ratio, and rainy indicator were found to have significant effects on crash occurrence. Furthermore, both Bayesian random parameters logistic and Bayesian random parameters conditional logistic models were developed to compare with the Bayesian conditional logistic model, and the Bayesian random parameters conditional logistic model was found to have the best model performance in terms of the AUC and DIC values. These results are important in real-time safety applications in the context of Integrated Active Traffic Management.

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“…Speed was proven to be a crucial factor in accident occurrences and their consequences (Aarts and van Schagen, 2006;Elvik et al, 2019). Thus, great importance is assigned to speed management of the road system to improve its safety and mobility (OECD, 2006;European Commission, 2018).…”

Section: Introductionmentioning

confidence: 99%

Speed perception by drivers as dependent on urban street design; a case-study

Gitelman¹,

Pesahov²,

Carmel³

2020

ToTS

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The strategy of sustainable road safety aims to match the road design characteristics to the target travel speeds, on every road type. This study examined the speed perception by drivers on collector urban roads in Israel, as reflected in their actual travel speeds and in the "appropriate" speeds reported by drivers. First, field surveys were conducted to collect detailed data on the road design characteristics, travel speeds, vehicle traffic and pedestrian activities on 80 urban street sections, in fifteen cities. Second, a drivers' survey was undertaken in proximity to the areas of the field surveys, to collect drivers' opinions about appropriate speeds on various street sections. The survey included 200 drivers, where each participant estimated four pictures with representative layouts of the study streets. Multivariate regression models were developed to examine the relationship between street characteristics, traffic exposure and travel speeds, as well as to explore the relationship between the driver characteristics, street design and "appropriate" speeds as reported by drivers. The results showed that road layout type was the most influential on selecting speeds. Multi-lane dual-carriageway roads are characterized by the highest actual and reported speeds, lower speeds are attributed to singlelane dual-carriageway and single-carriageway roads, and the lowest ones-to one-way streets. Among other characteristics moderating actual travel speeds were: higher pedestrian activity on the street, higher visual narrowing, more pedestrian attractions, presence of non-signalized junctions. The selection of "appropriate" speeds by drivers was affected by the street layout, the road visual narrowing, the socioeconomic level of the town and driver's personal characteristics. The drivers believed that for moderate street layouts, the appropriate speeds should be around 40 km/h, i.e. below the existing speed limit. The road design characteristics that were found to affect the speed selection by the drivers may be applicable for attaining targeted travel speeds on collector streets.

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Updated estimates of the relationship between speed and road safety at the aggregate and individual levels

Cited by 111 publications

References 30 publications

Analysis of the State of the Road Traffic Safety in the Republic of Kazakhstan

Analysis of the State of the Road Traffic Safety in the Republic of Kazakhstan

Utilizing bluetooth and adaptive signal control data for real-time safety analysis on urban arterials

Speed perception by drivers as dependent on urban street design; a case-study

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