Evaluation of Changes in Drivers Behaviour Due to Introduction of Countdown Timers at Signalized Intersections Using UAV Data

Pamuła, W.; Kłos, Marcin Jacek

doi:10.1007/978-3-030-39109-6_9

Cited by 2 publications

(3 citation statements)

References 16 publications

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“…Furthermore, the study (Pamuła, & Kłos, 2019) shows that the countdown devices on intersections may contribute to more drivers crossing the stop line compare to the situation, which devices were off. It could turn to increase probability of the red-light violations.…”

Section: Discussionmentioning

confidence: 94%

Effects of countdown timers on traffic safety at signalized intersections

Kłos¹,

Sobota²,

Żochowska³

et al. 2020

ToTS

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Improving safety is one of the most important tasks of traffic engineering. In the road network, intersections are the places where conflicts most often occur. Therefore, these objects are of particular interest to engineers, designers and researchers. The possibilities of using modern technologies give a chance not only to achieve greater traffic efficiency, but also to ensure safe passing for all road users. One of such solutions are countdown timers, i.e. support devices for traffic lights which show the time (in seconds) remaining before the currently displayed signal on traffic light change. In some Polish cities those devices are installed on a growing number of intersections. However, the introduction of such new solutions without prior examination of their impact on safety is not recommended. The use of countdown timers at signalized intersections changes the way traffic control signals are perceived by drivers. To compare the impact of the device on the behavior of drivers, three different intersections have been selected depending on the function of the intersection in the transportation network. The measurements were made in two periods of research: for a week with enabled and disabled countdown timer devices. This article is a continuation of the previous research work carried out by the authors on determining the impact of the countdown timers on traffic conditions. The aim of this article is to show results of the analysis of the time distribution of vehicles entering the crossroads during the red signal for different type of the intersections. The results of the case study show that the countdown timer devices improve safety. Depending on types of intersections during the research with the enabled countdown timers from 22,65% to 32,03% less of the vehicles drove into the crossroads in a prohibited period.

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Section: Discussionmentioning

confidence: 94%

Effects of countdown timers on traffic safety at signalized intersections

Kłos¹,

Sobota²,

Żochowska³

et al. 2020

ToTS

View full text Add to dashboard Cite

show abstract

“…The research in [35] was carried out following the methodology described in [18] and [36] concerning a GSCT. Crossing at the beginning of the red signal at three intersections was analyzed.…”

Section: Red Light Violation (Rlv)mentioning

confidence: 99%

“…The technique used for measurements has also developed over the years. Article [36] describes SCT tests performed with the use of UAVs. Video recording from the air has proven successful and, as a result of the study, a solution was obtained to reduce the start-up lost time (by 16-39%) and increase the speed of crossing the intersection (by 10-28%).…”

Section: Entering On Amber Signalmentioning

confidence: 99%

Analysis of the Impact of Countdown Signal Timers on Driving Behavior and Road Safety

et al. 2021

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This article describes the safety and effectiveness issues related to signal countdown timers (SCT). These devices are used in many countries around the world. The impact of these devices on road safety and the effectiveness of traffic lights is presented. During a literature review, more than 18 aspects of device use were recognized. The research involved measurements carried out at three intersections in Płock (Poland). The initial and final period of the green signal for vehicles was analyzed. Headways, incidences of vehicles passing through after the end of the green signal, and red-light violations were examined. Additionally, a fuel consumption analysis and a case study of a road crash in Szczecin (Poland) are presented. Problems related to signal countdown timers working during traffic light failure are described. The research shows different influences of signal countdown timers at various intersections. It was observed that SCTs increase the number of red-light violations and during the red-amber signal. On the other hand, the number of entries during the amber signal with SCTs is lower. A literature review also indicated that the use of SCT causes a reduction of start-up time (positive impact) and increases vehicle speed (negative impact). The article concludes that SCTs do not always fulfill their role in improving road safety and control efficiency. Conclusions can address various stakeholders, including drivers, road authorities, and traffic engineers.

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Evaluation of Changes in Drivers Behaviour Due to Introduction of Countdown Timers at Signalized Intersections Using UAV Data

Cited by 2 publications

References 16 publications

Effects of countdown timers on traffic safety at signalized intersections

Effects of countdown timers on traffic safety at signalized intersections

Analysis of the Impact of Countdown Signal Timers on Driving Behavior and Road Safety

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