Effects of Countdown Timers on Driver Behavior After the Yellow Onset at Chinese Intersections

@article{Long2011EffectsOC,
  title={Effects of Countdown Timers on Driver Behavior After the Yellow Onset at Chinese Intersections},
  author={Kejun Long and Lee D. Han and Qiang Yang},
  journal={Traffic Injury Prevention},
  year={2011},
  volume={12},
  pages={538 - 544}
}
Objectives: Few studies have focused on the effect of countdown timers at signalized intersections in China, where such timers are widely deployed for their perceived benefits of increased safety and capacity. This study examines the effect of countdown timers on driver behavior during the yellow interval. Method: Signal phasing and traffic operations were videotaped at 4 comparable signalized intersections under normal conditions. Microscopic details were extracted manually at 25 Hz to yield… Expand
Impact of Countdown Timer on Driving Maneuvers after the Yellow Onset at Signalized Intersections: An Empirical Study in Changsha, China
This study investigates the impact of countdown timer on driving maneuvers after the onset of yellow at signalized intersections in China. Signal phasing and traffic operations were videotaped atExpand
Effects of Countdown Timer on Yellow Light Running: An Empirical Study
Yellow light violation is exacerbated by the deficiency in the definition of yellow light function from Chinese road traffic safety law and no penalty to such violators. Last January, theExpand
Safer driver responses at intersections with green signal countdown timers
Abstract Traffic signal countdown timers (TSCTs) are innovative, practical, and cost effective technologies with the potential to improve safety at signalized intersections. The purpose of theseExpand
Improved driver responses at intersections with red signal countdown timers
Abstract Traffic Signal Countdown Timers (TSCTs) are innovative, practical and cost effective technologies with the potential to improve efficiency at signalized intersections. The purpose of theseExpand
The Effect of Countdown Timer on the Approach Speed at Signalised Intersections
Countdown timers are being installed at major intersections of India cities without analyzing their influence on intersection safety and efficiency. This study tries to investigate the effect ofExpand
Countdown timers, video surveillance and drivers' stop/go behavior: Winter versus summer.
TLDR
Investigating drivers' stopping and traversing behaviors during inter-green periods in Changchun, China revealed that installing both a countdown timer and CCTV in summer, or either of the devices in winter can increase Drivers' stopping tendency and hence reduce red-light violations. Expand
The issue of using countdown timers at intersections with traffic lights: A literature review
  • M. Barbara
  • Computer Science
  • 2018 XI International Science-Technical Conference Automotive Safety
  • 2018
TLDR
It has been proved that countdown timers are very useful, improve comfort, safety and smoothness of traffic in the opinion of drivers, and there is a lack of information on determining the real impact of countdown timers on the number of collisions in the presented literature review. Expand
Influence of green signal countdown timer on severe crash types at signalized intersections due to red light violations
TLDR
P2W are found to have the highest exposure in crash involvement for both timer conditions, and SCT's installation can be recommended as a cost-effective engineering countermeasure to reduce severe crash types at signalized intersections. Expand
Preliminary Impact Analysis of Countdown Signal Timer Installations at two Intersections in Greece
Abstract The objective of the paper is to identify the change of the compliant (or non-compliant) behavior of car drivers due to the existence of a countdown signal timer, installed at urbanExpand
Impact of Vehicular Countdown Signals on Driving Psychologies and Behaviors: Taking China as an Example
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 andExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 26 REFERENCES
Exploring impacts of countdown timers on traffic operations and driver behavior at a signalized intersection in Bangkok
This study aims to explore the impact of the countdown timer at various stages of the signal cycle, using two approaches: a traffic analysis and a public opinion survey conducted in Bangkok. TheExpand
Effects of countdown timers on queue discharge characteristics of through movement at a signalized intersection
TLDR
It was found that the countdown timers had a significant impact on the start-up lost time, reducing it by 1.00-1.92 s per cycle, or a 17-32% time saving, but the effects on saturation headway were found to be trivial, which implies that the Countdown timers do not have muchimpact on the saturation flow rate of signalized intersections. Expand
The Effect of Digital Count-Down Display on Signalized Junction Performance
TLDR
The study suggests that countdown timer has got little effect on initial delay but the effect on headway is significant and the violation of traffic light by the drivers for countdown and normal signal is compared. Expand
Modification of Driver Behavior Based on Information from Pedestrian Countdown Timers
Pedestrian countdown timers (CDTs) are promoted as a means of improving pedestrian safety at intersections. However, there are concerns that drivers view the timers while approaching the intersectionExpand
A before-and-after study on green signal countdown device installation
This paper reports a before-and-after study which evaluated the difference in driver response along an approach of a signalized intersection installed with a green signal countdown device (GSCD). TheExpand
Investigating the Impacts of Green Signal Countdown Devices: An Empirical Approach and Case Study in China
TLDR
Analysis of the impacts of green signal countdown devices in China will offer the basis for traffic practitioners, researchers, and authorities in China to assess the impact of GSCD with respect to its operational and safety performance, and propose guidelines for its proper field installation. Expand
Driver responses to green and red vehicular signal countdown displays: Safety and efficiency aspects.
TLDR
Results show that although GSCD can reduce late-stopping ratio, the dilemma zone is increased by about 28 m and the decision to cross will be more inconsistent among the approaching vehicles, creating a potential risk of rear-end crashes, and that RSCD does not significantly improve intersection safety over the longer term. Expand
Drivers' Behavioral Decision-Making at Signalized Intersection with Countdown Display Unit
TLDR
The results indicated that the countdown display influenced the drivers' behavioral decision-making significantly and provided some knowledge to traffic management to accelerate the process in the improvement of countdown display setting. Expand
Are Pedestrian Countdown Signals Effective in Reducing Crashes?
TLDR
It can be concluded that pedestrians as well as drivers are making better decisions using the time left to cross the street displayed on pedestrian countdown signals at signalized intersections in the city of Charlotte, North Carolina. Expand
Analysis of Driver Behavior in Dilemma Zones at Signalized Intersections
A field study evaluated the stopping characteristics of vehicles 2.5 to 5.5 s upstream of signalized intersections at the start of a yellow interval, a region typically considered drivers' indecisionExpand
...
1
2
3
...