Preliminary Impact Analysis of Countdown Signal Timer Installations at two Intersections in Greece

Papaioannou, Panagiotis; Politis, Ioannis

doi:10.1016/j.proeng.2014.10.481

Cited by 14 publications

(9 citation statements)

References 12 publications

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“…This is consistent with other research [12,38,44,47]. The results of the research on the red and amber signal are similarly confirmed by previous studies [26,30,31,[37][38][39][40]47]. An increase in the number of entries during the red and amber signals was also observed in Płock.…”

Section: Red Light Violationsupporting

confidence: 92%

“…3, the maximum values of these times increased, which is an unfavorable situation. The speed of the vehicles was not recorded in our study, but this situation may be related to an increase in speed at the inlets equipped with GSCTs, which was observed in previous research: [12,37,44,46,48]. For intersection No.…”

Section: Entering After the Green Signalmentioning

confidence: 55%

“…Research in Europe conditions is presented in article [37] including SCTs installed at two intersections in Cotonou, Greece and involved vehicle column start-up and drivers' behavior at the end of the green signal. The results showed that there were practically no early starts at intersections without an SCT.…”

Section: Red Light Violation (Rlv)mentioning

confidence: 99%

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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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Section: Red Light Violationsupporting

confidence: 92%

Section: Entering After the Green Signalmentioning

confidence: 55%

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

et al. 2021

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“…The results reflected that the time information provided at the beginning of the green light (end of the red light) can enhance efficiency and reduce start-up lost time but increase red-light running violations. Papaioannou and Politis found that the percentage of early start violations at the intersection with SCD was 24%, where the percentage for intersections without SCD was less than 1% [12]. Devalla et al found that GSCD is linked with fewer red light violations (RLVs) cycles, a lower mean number of RLVs per RLV cycle, higher vehicular speeds during the phase transition at different locations upstream to the stop line, a higher number of speeding cars, and higher stop line crossing speeds during amber [13].…”

Section: Literature Reviewmentioning

confidence: 99%

Impact of Vehicular Countdown Signals on Driving Psychologies and Behaviors: Taking China as an Example

Pan

Zhang

et al. 2017

Journal of Advanced Transportation

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Countdown signal control is a relatively new control mode that can inform a driver in advance about the remaining time to pass through intersections or the time needed to wait for other drivers and pedestrians. At present, few countries apply vehicular countdown signals. However, in China, some cities have applied vehicular countdown signals for years, though it is unclear how and how much such signals influence driving psychologies and behaviors compared with non-countdown signal controls. The present work aims to clarify the impact of vehicular countdown signals on driving psychologies and behaviors on the cognitive level. A questionnaire survey with 32 questions about driving psychologies and behaviors was designed, and an online survey was conducted. A total of 1051 valid questionnaires were received. The survey data were analyzed, and the main results indicate that most of the surveyed drivers prefer countdown signal controls and think that such controls can improve not only traffic safety but also traffic operational efficiency. The surveyed drivers also think that countdown signal controls have an impact on driving psychologies and behaviors and the survey results have demonstrated that the driving behaviors of female drivers surveyed are not conservative under the clear conditions of green countdown signal control. Further studies and methods concerning the effects of countdown signals on driving psychologies and behaviors are discussed.

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“…Papaioannou and Politis (2014) studied the changes in car drivers' behavior by comparing an intersection with countdown signal timers and a regular nearby one [13]. The intersections were located in the same city as those of this research.…”

Section: Literature Reviewmentioning

confidence: 99%

Effects on Road Safety and Functionality of Installing Countdown Timers to Traffic Lights

Botzoris¹,

Papakatsikas²,

Profillidis³

et al. 2017

IJT

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Preliminary Impact Analysis of Countdown Signal Timer Installations at two Intersections in Greece

Cited by 14 publications

References 12 publications

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

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

Impact of Vehicular Countdown Signals on Driving Psychologies and Behaviors: Taking China as an Example

Effects on Road Safety and Functionality of Installing Countdown Timers to Traffic Lights

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