Pub Date : 2025-11-19DOI: 10.1016/j.trf.2025.103452
Emily Noble, Cassandra Gauld, Heather E Douglas
{"title":"Why do young drivers respond to their smartphones while driving? Examining the predictive power of the theory of planned behaviour and Big 5 personality factors","authors":"Emily Noble, Cassandra Gauld, Heather E Douglas","doi":"10.1016/j.trf.2025.103452","DOIUrl":"10.1016/j.trf.2025.103452","url":null,"abstract":"","PeriodicalId":48355,"journal":{"name":"Transportation Research Part F-Traffic Psychology and Behaviour","volume":"117 ","pages":"Article 103452"},"PeriodicalIF":4.4,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145580002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-17DOI: 10.1016/j.trf.2025.103450
William Cubbin , Kjell van Paridon , Matthew Timmis , Helen Keyes
In 2022 the UK Highway Code had a major update including advice for cyclists around lane positioning that reflects existing safety training practice and guidance for drivers to leave at least 1.5 m of lateral clearance when overtaking cyclists. This study uses a repeated measures design to examine the impact of changes to the Highway Code on knowledge of cycling road positioning practice, and the effect of this knowledge on perceptions of cyclist discourtesy.
Knowledge of cyclist positioning practice improved significantly between the two surveys. A hierarchical multiple regression found that cyclist positioning knowledge score added significantly to the model predicting perceptions of cyclist discourtesy, with the change in R2 between the two models being significant. A separate hierarchical multiple regression, with cyclist positioning knowledge as the DV and Highway Code knowledge as the additional stage two IV, was not significant.
The findings showed that while the highway code changes did not predict improvements in knowledge, drivers with better knowledge did have more positive opinions of cyclist behaviour, when controlling for their own participation in cycling.
This was a novel study in applying a repeated measures design before and after the changes to the UK Highway Code. The findings will help inform development of interventions designed to improve road safety for cyclists.
{"title":"How knowledge of cycling practice and changes to the British Highway Code relate to perceptions of cyclist discourtesy","authors":"William Cubbin , Kjell van Paridon , Matthew Timmis , Helen Keyes","doi":"10.1016/j.trf.2025.103450","DOIUrl":"10.1016/j.trf.2025.103450","url":null,"abstract":"<div><div>In 2022 the UK Highway Code had a major update including advice for cyclists around lane positioning that reflects existing safety training practice and guidance for drivers to leave at least 1.5 m of lateral clearance when overtaking cyclists. This study uses a repeated measures design to examine the impact of changes to the Highway Code on knowledge of cycling road positioning practice, and the effect of this knowledge on perceptions of cyclist discourtesy.</div><div>Knowledge of cyclist positioning practice improved significantly between the two surveys. A hierarchical multiple regression found that cyclist positioning knowledge score added significantly to the model predicting perceptions of cyclist discourtesy, with the change in R<sup>2</sup> between the two models being significant. A separate hierarchical multiple regression, with cyclist positioning knowledge as the DV and Highway Code knowledge as the additional stage two IV, was not significant.</div><div>The findings showed that while the highway code changes did not predict improvements in knowledge, drivers with better knowledge did have more positive opinions of cyclist behaviour, when controlling for their own participation in cycling.</div><div>This was a novel study in applying a repeated measures design before and after the changes to the UK Highway Code. The findings will help inform development of interventions designed to improve road safety for cyclists.</div></div>","PeriodicalId":48355,"journal":{"name":"Transportation Research Part F-Traffic Psychology and Behaviour","volume":"117 ","pages":"Article 103450"},"PeriodicalIF":4.4,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145580005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-17DOI: 10.1016/j.trf.2025.103439
Yee Mun Lee , Joshua Domeyer
{"title":"Editorial to the Special Issue on Road User Interactions in the Age of Vehicle Automation","authors":"Yee Mun Lee , Joshua Domeyer","doi":"10.1016/j.trf.2025.103439","DOIUrl":"10.1016/j.trf.2025.103439","url":null,"abstract":"","PeriodicalId":48355,"journal":{"name":"Transportation Research Part F-Traffic Psychology and Behaviour","volume":"116 ","pages":"Article 103439"},"PeriodicalIF":4.4,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145579305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dangerous driving behaviors have been shown to be the main reason for vehicle crashes, especially among young drivers. Although research has focused on psychological determinants of dangerous driving behavior in recent years, social and interpersonal factors have had limited attention in the literature. Combining quantitative (i.e., multiple hierarchical regression) and qualitative (i.e., thematic analysis) methods, this study investigates the effects of responsibility and social intelligence on dangerous driving behavior among young drivers. A total of 404 US drivers aged 18–35 participated in this study and completed an online survey that included demographic questions, the Dula Dangerous Driving Index (DDDI), Tromsø Social Intelligence Scale (TSIS), Responsibility Questionnaire (RQ), and open-ended questions. The quantitative results indicated that higher social awareness, social skill, personal responsibility, and social responsibility are correlated with less frequent dangerous driving behavior. Also, young drivers with higher social awareness engaged in less frequent dangerous driving and negative cognitive/emotional driving. Furthermore, higher social skill resulted in less frequent negative cognitive/emotional driving. Higher personal responsibility led into less frequent negative cognitive/emotional driving, while higher social responsibility showed an opposite impact. The qualitative results showed that responsibility and understanding and perceiving others’ choices and perspectives have a noticeable role in preventing dangerous driving behavior. Incorporating responsibility and social intelligence into the development of driving education programs and driver assessment methods may reduce dangerous driving behaviors. Also, the findings can be useful for the revision of driving behavior categories and/or development of a new driving behavior measurement that includes responsibility and social intelligence.
{"title":"A mixed-methods examination of the effect of responsibility and social intelligence on driving behavior of young drivers","authors":"Seyedehsareh Hashemikamangar , Stephanie Ivey , Leah Windsor","doi":"10.1016/j.trf.2025.103449","DOIUrl":"10.1016/j.trf.2025.103449","url":null,"abstract":"<div><div>Dangerous driving behaviors have been shown to be the main reason for vehicle crashes, especially among young drivers. Although research has focused on psychological determinants of dangerous driving behavior in recent years, social and interpersonal factors have had limited attention in the literature. Combining quantitative (i.e., multiple hierarchical regression) and qualitative (i.e., thematic analysis) methods, this study investigates the effects of responsibility and social intelligence on dangerous driving behavior among young drivers. A total of 404 US drivers aged 18–35 participated in this study and completed an online survey that included demographic questions, the Dula Dangerous Driving Index (DDDI), Tromsø Social Intelligence Scale (TSIS), Responsibility Questionnaire (RQ), and open-ended questions. The quantitative results indicated that higher social awareness, social skill, personal responsibility, and social responsibility are correlated with less frequent dangerous driving behavior. Also, young drivers with higher social awareness engaged in less frequent dangerous driving and negative cognitive/emotional driving. Furthermore, higher social skill resulted in less frequent negative cognitive/emotional driving. Higher personal responsibility led into less frequent negative cognitive/emotional driving, while higher social responsibility showed an opposite impact. The qualitative results showed that responsibility and understanding and perceiving others’ choices and perspectives have a noticeable role in preventing dangerous driving behavior. Incorporating responsibility and social intelligence into the development of driving education programs and driver assessment methods may reduce dangerous driving behaviors. Also, the findings can be useful for the revision of driving behavior categories and/or development of a new driving behavior measurement that includes responsibility and social intelligence.</div></div>","PeriodicalId":48355,"journal":{"name":"Transportation Research Part F-Traffic Psychology and Behaviour","volume":"116 ","pages":"Article 103449"},"PeriodicalIF":4.4,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145579202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-17DOI: 10.1016/j.trf.2025.103428
Tianming Zhang , Jiuchang Wei , Yi-Na Li
In the context of the information technology revolution and the vigorous development of the digital economy, the so-called new business form has emerged, with the ride-hailing industry becoming a paradigmatic example of this transformation in China. Previous research has concentrated on attributing responsibility when the responsible party is identifiable; however, this approach overlooks variations in workers’ subjective attributions when the responsible party is not clear. This study aims to address this gap by investigating the impacts of group heterogeneity and subjective and objective factors on these variations in subjective attribution. Applying attribution theory (AT), this study systematically analysed the results through a cluster analysis of a sample comprising 696 ride-hailing drivers. The analysis revealed significant group heterogeneity in the drivers’ subjective attributions, which could be categorised into five distinct groups. Furthermore, job satisfaction, organisational commitment and psychological pressure significantly influenced the subjective attributions of occupational injuries. Additionally, significant differences in attribution patterns were observed amongst the different groups. This study contributes to the expansion of the application of AT by revealing how different factors shape the attribution process. Finally, recommendations are provided for platforms, governments and drivers, focusing on implementing mental health management, reducing self-blame through organisational support and tailoring interventions to group heterogeneity to improve occupational injury prevention and rights protection.
{"title":"Group heterogeneity in occupational injury attribution amongst ride-hailing drivers","authors":"Tianming Zhang , Jiuchang Wei , Yi-Na Li","doi":"10.1016/j.trf.2025.103428","DOIUrl":"10.1016/j.trf.2025.103428","url":null,"abstract":"<div><div>In the context of the information technology revolution and the vigorous development of the digital economy, the so-called new business form has emerged, with the ride-hailing industry becoming a paradigmatic example of this transformation in China. Previous research has concentrated on attributing responsibility when the responsible party is identifiable; however, this approach overlooks variations in workers’ subjective attributions when the responsible party is not clear. This study aims to address this gap by investigating the impacts of group heterogeneity and subjective and objective factors on these variations in subjective attribution. Applying attribution theory (AT), this study systematically analysed the results through a cluster analysis of a sample comprising 696 ride-hailing drivers. The analysis revealed significant group heterogeneity in the drivers’ subjective attributions, which could be categorised into five distinct groups. Furthermore, job satisfaction, organisational commitment and psychological pressure significantly influenced the subjective attributions of occupational injuries. Additionally, significant differences in attribution patterns were observed amongst the different groups. This study contributes to the expansion of the application of AT by revealing how different factors shape the attribution process. Finally, recommendations are provided for platforms, governments and drivers, focusing on implementing mental health management, reducing self-blame through organisational support and tailoring interventions to group heterogeneity to improve occupational injury prevention and rights protection.</div></div>","PeriodicalId":48355,"journal":{"name":"Transportation Research Part F-Traffic Psychology and Behaviour","volume":"116 ","pages":"Article 103428"},"PeriodicalIF":4.4,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145579204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-15DOI: 10.1016/j.trf.2025.103442
Igor Radun , Danijela Barić
Driver fatigue has long been recognized as an important cause of road crashes. However, official road crash statistics based on police reports underestimate its prevalence. The enforcement of laws regarding driver fatigue is difficult because no validated and reliable device exists to measure fatigue/sleepiness levels. This study examined driver fatigue in Croatia, focusing on its recognition in law, crash reporting, and enforcement. It aimed to quantify fatigue-related crashes and assess traffic police perspectives on the issue. We used three data sources: (1) national road crash data from 2009 to 2018, (2) a survey of Croatian traffic police officers (n = 1037) using a modified Finnish questionnaire, and (3) Ministry of the Interior records on drivers penalized under article that addresses driver’s fitness to drive including driver fatigue (2013–2023). The results show that driver fatigue was noted in fewer than one percent of crashes recorded in the national database, even for those that resulted in fatality. Punishing drivers based on their fatigue also appears to be rare. These numbers seem understandable considering Croatian traffic police officers’ reports of the difficulties they face in recognizing driver fatigue and prosecuting drivers on that basis. However, traffic police officers are aware of the dangers of driver fatigue. Conclusions. Challenges remain as to how to utilize the traffic police force in the detection of fatigued drivers on roads, recognize the role of fatigue in crash causation, and effectively enforce driver fatigue laws.
{"title":"Driver fatigue: crashes, the law, and traffic police officers’ experiences and views","authors":"Igor Radun , Danijela Barić","doi":"10.1016/j.trf.2025.103442","DOIUrl":"10.1016/j.trf.2025.103442","url":null,"abstract":"<div><div>Driver fatigue has long been recognized as an important cause of road crashes. However, official road crash statistics based on police reports underestimate its prevalence. The enforcement of laws regarding driver fatigue is difficult because no validated and reliable device exists to measure fatigue/sleepiness levels. This study examined driver fatigue in Croatia, focusing on its recognition in law, crash reporting, and enforcement. It aimed to quantify fatigue-related crashes and assess traffic police perspectives on the issue. We used three data sources: (1) national road crash data from 2009 to 2018, (2) a survey of Croatian traffic police officers (n = 1037) using a modified Finnish questionnaire, and (3) Ministry of the Interior records on drivers penalized under article that addresses driver’s fitness to drive including driver fatigue (2013–2023). The results show that driver fatigue was noted in fewer than one percent of crashes recorded in the national database, even for those that resulted in fatality. Punishing drivers based on their fatigue also appears to be rare. These numbers seem understandable considering Croatian traffic police officers’ reports of the difficulties they face in recognizing driver fatigue and prosecuting drivers on that basis. However, traffic police officers are aware of the dangers of driver fatigue. Conclusions. Challenges remain as to how to utilize the traffic police force in the detection of fatigued drivers on roads, recognize the role of fatigue in crash causation, and effectively enforce driver fatigue laws.</div></div>","PeriodicalId":48355,"journal":{"name":"Transportation Research Part F-Traffic Psychology and Behaviour","volume":"117 ","pages":"Article 103442"},"PeriodicalIF":4.4,"publicationDate":"2025-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145528118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-15DOI: 10.1016/j.trf.2025.103436
Sajjad Mazloum , Navid Khademi , Zuduo Zheng
Background
Understanding pedestrian attention allocation is critical for enhancing safety at intersections and informing the design of safer pedestrian crossings.
Objectives
We investigate the effects of various factors (individual, environmental, and situational) on pedestrian attention allocation, specifically focusing on two indicators: ‘immediate surrounding attention allocation’ (ISAA), which emphasizes efficient navigation, and ‘safety attention allocation’ (SAA), which highlights adherence to safety measures. Additionally, the study evaluated the effectiveness of the pedestrian behavior questionnaire (PBQ) in assessing how pedestrians allocate their attention.
Methods
The study recruited 198 participants from various demographic groups. A virtual reality (VR) walking simulator with varying weather conditions was used, and eye-tracking recorded visual attention. Participants completed simulated street crossings under different conditions. Data were analyzed using statistical tests and structural equation modeling (SEM) to assess factors influencing pedestrian attention.
Findings
The results indicated that adverse weather conditions and time pressure significantly impaired pedestrian attention before and during street crossings. Specifically, hot weather led to increased ISAA. In contrast, rainy and cold conditions negatively affected SAA. Additionally, males exhibited greater attention to traffic settings compared to females, and prior crash experience enhanced cautious pedestrian behavior. The PBQ effectively predicted pedestrian SAA and accounted for the impact of individual characteristics on alertness to safety hazards before crossing the street. As expected, PBQ has fallen short of addressing participants’ ISAA before crossing and individuals’ attention allocation while crossing the street. The findings suggest actionable strategies for improving pedestrian attention and safety through targeted interventions.
{"title":"A study on the role of weather, time pressure, and individual factors in pedestrian attention allocation patterns: Evidence from virtual reality eye-tracking experiments☆","authors":"Sajjad Mazloum , Navid Khademi , Zuduo Zheng","doi":"10.1016/j.trf.2025.103436","DOIUrl":"10.1016/j.trf.2025.103436","url":null,"abstract":"<div><h3>Background</h3><div>Understanding pedestrian attention allocation is critical for enhancing safety at intersections and informing the design of safer pedestrian crossings.</div></div><div><h3>Objectives</h3><div>We investigate the effects of various factors (individual, environmental, and situational) on pedestrian attention allocation, specifically focusing on two indicators: ‘immediate surrounding attention allocation’ (ISAA), which emphasizes efficient navigation, and ‘safety attention allocation’ (SAA), which highlights adherence to safety measures. Additionally, the study evaluated the effectiveness of the pedestrian behavior questionnaire (PBQ) in assessing how pedestrians allocate their attention.</div></div><div><h3>Methods</h3><div>The study recruited 198 participants from various demographic groups. A virtual reality (VR) walking simulator with varying weather conditions was used, and eye-tracking recorded visual attention. Participants completed simulated street crossings under different conditions. Data were analyzed using statistical tests and structural equation modeling (SEM) to assess factors influencing pedestrian attention.</div></div><div><h3>Findings</h3><div>The results indicated that adverse weather conditions and time pressure significantly impaired pedestrian attention before and during street crossings. Specifically, hot weather led to increased ISAA. In contrast, rainy and cold conditions negatively affected SAA. Additionally, males exhibited greater attention to traffic settings compared to females, and prior crash experience enhanced cautious pedestrian behavior. The PBQ effectively predicted pedestrian SAA and accounted for the impact of individual characteristics on alertness to safety hazards before crossing the street. As expected, PBQ has fallen short of addressing participants’ ISAA before crossing and individuals’ attention allocation while crossing the street. The findings suggest actionable strategies for improving pedestrian attention and safety through targeted interventions.</div></div>","PeriodicalId":48355,"journal":{"name":"Transportation Research Part F-Traffic Psychology and Behaviour","volume":"116 ","pages":"Article 103436"},"PeriodicalIF":4.4,"publicationDate":"2025-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145520186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Advanced Driver Assistance Systems (ADAS; Level 2 vehicle automation) are increasingly common in vehicles. Although these systems are designed to enhance driving comfort and safety, their capabilities and limitations are often misjudged, potentially creating new traffic risks. While drivers’ misunderstanding and overreliance on ADAS have been implicated in several high-profile accidents, insufficient empirical research has examined how such misconceptions relate to unsafe driving behaviors. In a pre-registered survey of 130 Tesla Autopilot users in China, we measured users’ underestimation and overestimation of Autopilot’s capabilities and their operational knowledge regarding the use of Autopilot’s key functions. Participants were more likely to overestimate than underestimate Autopilot’s capabilities, with mean accuracies of about 40 % and 70 %, respectively. Neither misconception was associated with self-reported engagement in non-driving-related activities (e.g., eating and sleeping) while using ADAS. Participants did not show sufficient operational knowledge, with mean accuracy below 75 %. Operational knowledge was positively correlated with intentions to engage in common non-driving-related activities such as eating (r = 0.25, p = 0.004), but not with intentions to sleep (r = − 0.10, p = 0.235). In addition, their propensity to trust machines (a trait-like tendency) was positively correlated with intentions to engage in both common non-driving-related activities (r = 0.28, p = 0.002) and sleeping (r = 0.30, p < 0.001). We discuss the theoretical and practical implications of these findings, particularly in relation to driver education and training that foster appropriate understanding and use of ADAS.
高级驾驶辅助系统(ADAS, Level 2 vehicle automation)在汽车中越来越普遍。尽管这些系统旨在提高驾驶舒适性和安全性,但它们的能力和局限性往往被误判,可能会带来新的交通风险。虽然驾驶员对ADAS系统的误解和过度依赖与几起引人注目的事故有关,但没有足够的实证研究来检验这种误解与不安全驾驶行为之间的关系。在对中国130名特斯拉自动驾驶仪用户的预注册调查中,我们测量了用户对自动驾驶仪功能的低估和高估,以及他们对自动驾驶仪关键功能使用的操作知识。参与者更有可能高估而不是低估Autopilot的能力,平均准确率分别约为40%和70%。这两种误解都与使用ADAS时自我报告的非驾驶相关活动(如吃饭和睡觉)有关。参与者没有表现出足够的操作知识,平均准确率低于75%。操作知识与参与常见非驾驶相关活动(如进食)的意愿呈正相关(r = 0.25, p = 0.004),但与睡眠意愿无关(r = - 0.10, p = 0.235)。此外,他们信任机器的倾向(一种类似特质的倾向)与参与与驾驶无关的常见活动(r = 0.28, p = 0.002)和睡眠(r = 0.30, p < 0.001)的意愿呈正相关。我们讨论了这些发现的理论和实践意义,特别是与驾驶员教育和培训有关,以促进对ADAS的适当理解和使用。
{"title":"Imperfect advanced driver assistance systems in the eyes of imperfect users","authors":"Yueying Chu , Wenting Tang , Shanguang Chen , Peng Liu","doi":"10.1016/j.trf.2025.103447","DOIUrl":"10.1016/j.trf.2025.103447","url":null,"abstract":"<div><div>Advanced Driver Assistance Systems (ADAS; Level 2 vehicle automation) are increasingly common in vehicles. Although these systems are designed to enhance driving comfort and safety, their capabilities and limitations are often misjudged, potentially creating new traffic risks. While drivers’ misunderstanding and overreliance on ADAS have been implicated in several high-profile accidents, insufficient empirical research has examined how such misconceptions relate to unsafe driving behaviors. In a pre-registered survey of 130 Tesla Autopilot users in China, we measured users’ underestimation and overestimation of Autopilot’s capabilities and their operational knowledge regarding the use of Autopilot’s key functions. Participants were more likely to overestimate than underestimate Autopilot’s capabilities, with mean accuracies of about 40 % and 70 %, respectively. Neither misconception was associated with self-reported engagement in non-driving-related activities (e.g., eating and sleeping) while using ADAS. Participants did not show sufficient operational knowledge, with mean accuracy below 75 %. Operational knowledge was positively correlated with intentions to engage in common non-driving-related activities such as eating (<em>r</em> = 0.25, <em>p</em> = 0.004), but not with intentions to sleep (<em>r</em> = − 0.10, <em>p</em> = 0.235). In addition, their propensity to trust machines (a trait-like tendency) was positively correlated with intentions to engage in both common non-driving-related activities (<em>r</em> = 0.28, <em>p</em> = 0.002) and sleeping (<em>r</em> = 0.30, <em>p</em> < 0.001). We discuss the theoretical and practical implications of these findings, particularly in relation to driver education and training that foster appropriate understanding and use of ADAS.</div></div>","PeriodicalId":48355,"journal":{"name":"Transportation Research Part F-Traffic Psychology and Behaviour","volume":"116 ","pages":"Article 103447"},"PeriodicalIF":4.4,"publicationDate":"2025-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145579315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With increasing numbers of partially and conditionally autonomous vehicles (i.e., levels L2 to L3) on the roads, altered driver states such as inattention or drowsiness at the wheel may be exacerbated. This new way of driving will, however, make the indicators traditionally used to detect altered states less relevant. New detection methods using other indicators, such as physiological and postural indicators, could be a solution. In this study, 21 participants drove on motorways in a dual control vehicle at two levels of automation (L2+ and L3). Seat pressure and physiological (i.e., cardiac and respiratory) indicators were continuously recorded and state of drowsiness was classified according to PERCLOS70. In defined states of drowsiness, different physiological and postural characteristics were identified. Results show that postural indicators are more sensitive to level of automation than physiological indicators, suggesting that posture may reflect behavior associated with a particular level of autonomous driving. This suggestion is supported by subjective feelings elicited from the drivers. The multiple postures observed to be associated with deep drowsiness (or falling asleep) point to inter-individual postural variability. Postural information could therefore reflect both active behavior and drowsiness, whereas physiological information appears only to reflect drowsiness. This study demonstrates the value of using such measurements jointly to detect drowsiness at the wheel.
{"title":"Postural and physiological indicators of drowsiness at the wheel compared in partially and conditionally autonomous on-road driving","authors":"Gaëtan Perrotte , Jean-Louis Vercher , Clément Bougard","doi":"10.1016/j.trf.2025.103444","DOIUrl":"10.1016/j.trf.2025.103444","url":null,"abstract":"<div><div>With increasing numbers of partially and conditionally autonomous vehicles (i.e., levels L2 to L3) on the roads, altered driver states such as inattention or drowsiness at the wheel may be exacerbated. This new way of driving will, however, make the indicators traditionally used to detect altered states less relevant. New detection methods using other indicators, such as physiological and postural indicators, could be a solution. In this study, 21 participants drove on motorways in a <em>dual control</em> vehicle at two levels of automation (L2+ and L3). Seat pressure and physiological (i.e., cardiac and respiratory) indicators were continuously recorded and state of drowsiness was classified according to PERCLOS70. In defined states of drowsiness, different physiological and postural characteristics were identified. Results show that postural indicators are more sensitive to level of automation than physiological indicators, suggesting that posture may reflect behavior associated with a particular level of autonomous driving. This suggestion is supported by subjective feelings elicited from the drivers. The multiple postures observed to be associated with deep drowsiness (or falling asleep) point to inter-individual postural variability. Postural information could therefore reflect both active behavior and drowsiness, whereas physiological information appears only to reflect drowsiness. This study demonstrates the value of using such measurements jointly to detect drowsiness at the wheel.</div></div>","PeriodicalId":48355,"journal":{"name":"Transportation Research Part F-Traffic Psychology and Behaviour","volume":"116 ","pages":"Article 103444"},"PeriodicalIF":4.4,"publicationDate":"2025-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145520190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-11-15DOI: 10.1016/j.trf.2025.103448
Xiao-Feng Sun
Urban Air Transportation (UAT) provides a promising remedy for urban congestion, improving travel efficiency and mitigating environmental effects. This research expands the Unified Theory of Acceptance and Use of Technology 2 (UTAUT2) by integrating trust (TR) and perceived risk (PR) to identify both facilitating and obstructive elements in UAT acceptance. Survey data from 184 respondents were analyzed using structural equation modeling. The results indicate that performance expectancy (PE) is the most significant positive predictor of usage intention (UI), succeeded by effort expectancy (EE), social influence (SI), and price value (PV). Conversely, hedonic motivation (HM) is non-significant, highlighting the utilitarian essence of UAT. PR significantly diminishes UI both directly and indirectly by undermining TR, which partially mediates the PR–UI relationship. Some useful tips are to put functional design first, spend money on safety certifications and privacy protections, use social influence, and improve pricing strategies. Policy implications underscore the necessity of standardizing safety and privacy metrics while promoting international collaboration to cultivate social consensus. This research enhances transportation psychology by substantiating the mediating function of trust in the PR–UI relationship and providing a comprehensive framework that considers both facilitators and barriers to adoption.
{"title":"Exploring key factors influencing urban air transport Acceptance: A trust and Risk-Embedded UTAUT2 framework","authors":"Xiao-Feng Sun","doi":"10.1016/j.trf.2025.103448","DOIUrl":"10.1016/j.trf.2025.103448","url":null,"abstract":"<div><div>Urban Air Transportation (UAT) provides a promising remedy for urban congestion, improving travel efficiency and mitigating environmental effects. This research expands the Unified Theory of Acceptance and Use of Technology 2 (UTAUT2) by integrating trust (TR) and perceived risk (PR) to identify both facilitating and obstructive elements in UAT acceptance. Survey data from 184 respondents were analyzed using structural equation modeling. The results indicate that performance expectancy (PE) is the most significant positive predictor of usage intention (UI), succeeded by effort expectancy (EE), social influence (SI), and price value (PV). Conversely, hedonic motivation (HM) is non-significant, highlighting the utilitarian essence of UAT. PR significantly diminishes UI both directly and indirectly by undermining TR, which partially mediates the PR–UI relationship. Some useful tips are to put functional design first, spend money on safety certifications and privacy protections, use social influence, and improve pricing strategies. Policy implications underscore the necessity of standardizing safety and privacy metrics while promoting international collaboration to cultivate social consensus. This research enhances transportation psychology by substantiating the mediating function of trust in the PR–UI relationship and providing a comprehensive framework that considers both facilitators and barriers to adoption.</div></div>","PeriodicalId":48355,"journal":{"name":"Transportation Research Part F-Traffic Psychology and Behaviour","volume":"116 ","pages":"Article 103448"},"PeriodicalIF":4.4,"publicationDate":"2025-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145520189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}