Effects of lead time of verbal collision warning messages on driving behavior in connected vehicle settings

Wan, Jingyan; Wu, Changxu; Zhang, Yiqi

doi:10.1016/j.jsr.2016.07.003

Cited by 38 publications

(8 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A connected environment allows exchange of traffic information with roadside units and/or other vehicles, which can warn drivers about hazardous situations within or out of sights and thereby reduce crash risk. For instance, Wan et al (2016) analysed the effects of lead time of verbal collision warning messages on car-following behaviour and reported that gradual braking and shorter response time of drivers when the lead time was between 5 to 8 s. Chrysler et al (2015) concluded that drivers identified potential threat sooner in a connected environment compared to a traditional environment, resulting in shorter response times. Lin et al (2016) reported longer response times of drivers in a connected environment in hazardous conditions such as fog, which contrasts the findings of several past studies.…”

Section: Response Time In a Connected Environmentmentioning

confidence: 99%

Cooperate or not? Exploring drivers’ interactions and response times to a lane-changing request in a connected environment

Ali

Bliemer

Zheng

et al. 2020

Transportation Research Part C: Emerging Technologies

View full text Add to dashboard Cite

Lane-changing is one of the complex driving tasks that depends on the number of vehicles, objectives, and lanes. A driver often needs to respond to a lane-changing request of a lane-changer, which is a function of their personality traits and the current driving conditions. A connected environment is expected to assist during the lane-changing decision-making process by increasing situational awareness of surrounding traffic through vehicle-to-vehicle communication and vehicle-to-infrastructure communication. Although lane changing decision making process in a traditional environment (an environment without driving aids) has been frequently investigated, our understanding of drivers' interactions during the lane-changing decisionmaking process in a connected environment remains elusive due to the novelty of the connected environment and the scarcity of relevant data. As such, this study examines drivers' responses to lane-changing requests in a connected environment using the CARRS-Q Advanced Driving Simulator. Seventy-eight participants responded to the lane-changing request of a lanechanger under two randomised driving conditions: baseline (traditional environment without driving aids) and connected environment (with driving aids). A segmentation-based approach is employed to extract drivers' responses to the lanechanging request and subsequently estimate their response time from trajectory data. Additionally, drivers' response times are modelled using a random parameter accelerated failure time (AFT) hazard-based duration model. Results reveal that drivers tend to be more cooperative in response to a lane-changing request in the connected environment compared with the baseline condition whereby they tend to accelerate to avoid the lane-changing request. The AFT model suggests that on average drivers' response times are shorter in the connected environment, implying that drivers respond to the lane-changing request faster in the presence of driving aids. However, at the individual level, connected environment's impact on drivers' response times is mixed as drivers' response times may increase or decrease in the connected environment compared to the baseline condition, for instance, we find that female drivers have lower response times in the connected environment than that of male drivers. Overall, this study finds that drivers in connected environment, on average, take less time to respond and appear to be more cooperative, and thus, are less likely to be engaged in safety-critical events.

show abstract

Section: Response Time In a Connected Environmentmentioning

confidence: 99%

Cooperate or not? Exploring drivers’ interactions and response times to a lane-changing request in a connected environment

Ali

Bliemer

Zheng

et al. 2020

Transportation Research Part C: Emerging Technologies

View full text Add to dashboard Cite

show abstract

“…As such, HRGC alerts should be designed considering these hazard levels and their effect on driver behavior and perception. Additional parameters of importance include vehicle lead time (26) and system reliability (27), which both must be considered for application in realistic driving settings.…”

Section: Ivaa Considerations For Hrgcs and Past Researchmentioning

confidence: 99%

Effects of Auditory Display Types and Acoustic Variables on Subjective Driver Assessment in a Rail Crossing Context

Nadri

Lee

Kekal

et al. 2021

Transportation Research Record: Journal of the Transportation R

View full text Add to dashboard Cite

Highway-rail grade crossings (HRGCs) present multiple collision risks for motorists, suggesting the need for additional countermeasures to increase driver compliance. The use of in-vehicle auditory alerts (IVAAs) at HRGCs has been increasing, but there are limited standards or guidelines on how such alerts should be implemented. In the current study, we sought to investigate the effect of different auditory display variables, such as display type and acoustics, on subjective user assessments. We recruited 24 participants and asked them to rate 36 different IVAAs belonging to one of three display types (earcons—short synthetic tones, speech alerts, and hybrid alerts consisting of an earcon and speech) along 11 subjective ratings. Results showed that a hybrid alert led to better overall ratings for acceptance, safety, and semantic understanding when compared with earcon or speech alerts. Additional analyses revealed that semantic variables, such as speech order and gender, should be accounted for when designing IVAAs in an HRGC context. Hybrid IVAAs with spatial audio showed lower Urgency and Hazard level ratings. Findings of the current study can help inform the design of IVAAs for HRGCs.

show abstract

“…Lead time is one such variable requiring evaluation, as it represents one of the first considerations when designing an IVAA, and should vary depending on the purpose of the display. Existing research on lead time selection points to varying lead times for safety applications, such as take-over requests [12] and forward collision warnings [13], further suggesting the need for an evaluation for HRGCs. Performance at HRGCs can also be considered as distinct from other automotive applications, as appropriate behavior at crossings also involves visually monitoring the crossing for a train and existing warning displays present at crossings.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Evaluation of Lead Time Variation for Rail Crossing In-Vehicle Alerts

Nadri¹,

Zieger²,

Lautala³

et al. 2022

Proceedings of the 27th International Conference on Auditory Display (ICAD 2022)

View full text Add to dashboard Cite

In-Vehicle Auditory Alert (IVAA) effectiveness depends on several auditory factors. Lead time has been shown to significantly influence IVAA effectiveness for automotive displays, although applications for Highway-Rail Grade Crossings (HRGCs) have yet to modulate and determine an appropriate lead time. To address this research gap, we conducted a small-scale driving simulator study to investigate the effect of lead time variation on driving performance and gaze behavior at rail crossings. We recruited 11 participants who drove through three experimental drives with different alert state conditions. Preliminary results show that a seven second lead time led to statistically higher temporal demand, a slower approach speed to crossings, and better gaze behavior than the no IVAA condition. The seven second lead time condition had similar higher values than the advanced warning condition, although they were not statistically significant. Findings of the current study offer insight into auditory display guidance for HRGCs, although future work involving a larger recruitment pool is needed to confirm study findings.

show abstract

Effects of lead time of verbal collision warning messages on driving behavior in connected vehicle settings

Abstract: The findings have implications for the design of collision warning systems.

Cited by 38 publications

References 32 publications

Cooperate or not? Exploring drivers’ interactions and response times to a lane-changing request in a connected environment

Cooperate or not? Exploring drivers’ interactions and response times to a lane-changing request in a connected environment

Effects of Auditory Display Types and Acoustic Variables on Subjective Driver Assessment in a Rail Crossing Context

Preliminary Evaluation of Lead Time Variation for Rail Crossing In-Vehicle Alerts

Contact Info

Product

Resources

About