The application of continuous speed data for setting rational speed limits and improving roadway safety

Fitzpatrick, Cole; McKinnon, Ian A; Tainter, Francis; Knodler, Michael A.

doi:10.1016/j.ssci.2016.01.020

Cited by 14 publications

(3 citation statements)

References 7 publications

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“…This may increase the crashing energy and thus increase the accident severity. This finding is consistent with the results of some researchers [19].…”

Section: Mathematical Problems In Engineeringsupporting

confidence: 94%

Estimation of Crash Severity on Mountainous Freeways in Chongqing

Meng

2017

Mathematical Problems in Engineering

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Mountainous freeways always suffer from accidents due to special terrain, weather conditions, driving environment, and so on. Based on the records of 898 accidents that occurred on mountainous freeways in Chongqing during the past 6 years, the partial proportional odds model is used to identify the factors affecting the accident severity. The time of the accident, season, involvement of trucks, accident characteristics, speeding, maximum driving experience of involved drivers, and weather and road conditions are found to be important for the levels of accident severity. Zero to 6 a.m. and 19 to 24 p.m. are the times prone to serious traffic accidents. The probability of serious traffic accidents in summer and autumn is greater than that in spring and winter. Once a truck is involved in an accident, the consequence is often more severe. Turnover and speeding will result in a grave accident. When there is an experienced driver, the probability of serious traffic accidents is low. The fog is extremely unfavorable weather conditions. The probability of serious accident happening in the downgrade, ramp, curve, bridge, and tunnel sections is greater than the others. The results aim to provide valuable reference for traffic safety on mountainous freeways.

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“…This may increase the crashing energy and thus increase the accident severity. This finding is consistent with the results of some researchers [19].…”

Section: Mathematical Problems In Engineeringsupporting

confidence: 94%

Estimation of Crash Severity on Mountainous Freeways in Chongqing

Meng

2017

Mathematical Problems in Engineering

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“…Directing attention towards an incoming vehicle or not paying attention at a crosswalk will have an impact on pedestrians' traffic safety. 25…”

Section: Attentionmentioning

confidence: 99%

Proposing a research framework for urban lighting: The alertness, arousal and anxiety triad

Jedon

Haans

Kort

2022

Lighting Research & Technology

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The impact of street lighting on the visual tasks of pedestrians is well known, as are studies that have explored the relationship between street lighting and pedestrians’ feelings of safety. But there are other, less investigated, possible effects of light in mesopic situations. Research on street lighting for pedestrians has traditionally focused on visual performance (e.g., obstacle detection, face recognition) and people’s appraisals of the outdoor environment after dark. But the influence of concepts such as alertness and attentiveness on pedestrians’ experience and performance is not yet well researched even though this too can play an important role in pedestrians’ attention and safety. To remedy this, we are offering first a clarification of the relevant constructs – alertness, arousal and anxiety – and proposing a new theoretical framework. Possible benefits of using this conceptual framework are illustrated with an analysis of conclusions from a study conducted by Burtt. We make a case for more research on mechanisms underlying pedestrians’ attention and safety. Implications for future research, in particular the need for validating this framework, are discussed.

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“…This type of data collection could provide new opportunities in speed limit setting to increase safety more efficiently. Today, smartphone apps and GPS devices have the ability to capture this data; however, this method is not entirely limited to free‐flow speeds, as there is missing data on the time headway between vehicles [13, 14].…”

Section: Literature Reviewmentioning

confidence: 99%

Evaluation of small unmanned aerial system highway volume and speed‐sensing applications

Ryan

Knodler

et al. 2020

IET Intelligent Trans Sys

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Small unmanned aerial systems (sUAS) have been utilised in the transportation industry in recent years to decrease the cost of projects and tasks while increasing safety. This is due to their ability to capture aerial images with reduced effort and time. Recently, these devices have begun to be used for traffic monitoring, given their ability to capture video above a roadway. Combined with object‐tracking techniques, vehicle data such as speeds, volumes, and trajectories could be extracted, providing an opportunity to revolutionize traffic data collection techniques. There exists a need to improve upon origin–destination volume and speed data collection procedures through the development of a low‐cost methodology to capture detailed data that would allow for more accurate analysis. This study evaluates a methodology and measures the accuracy of volume and speed data collected through sUAS aerial imagery using object tracking techniques. Using the developed methodology, vehicle volumes were tracked at 93% accuracy, and vehicle speeds were recorded with a 6.6% relative error. While future improvements could be made on this methodology as technology advances, this study reveals a low‐cost solution to collect vehicle data which could improve the efficiency of transportation studies, and in turn, improve safety.

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The application of continuous speed data for setting rational speed limits and improving roadway safety

Cited by 14 publications

References 7 publications

Estimation of Crash Severity on Mountainous Freeways in Chongqing

Estimation of Crash Severity on Mountainous Freeways in Chongqing

Proposing a research framework for urban lighting: The alertness, arousal and anxiety triad

Evaluation of small unmanned aerial system highway volume and speed‐sensing applications

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