1,721,316 research outputs found
Experts' opinions concerning the minimum content of a national household travel survey in relation with their background
No full textAlthough an extensive literature is available concerning the design of travel surveys, fewer research initiatives have been carried out to determine the content of the survey itself. The objective of the present work is to identify such minimum set through a survey (MTSQ - Mini-Travel Survey Questionnaire) targeted to experts in this field. Moreover, it is investigated whether unanimity exists in the experts' opinions concerning the importance of various types of questions and whether regional and/or professional differences exist. The MTSQ survey was successfully completed by 81 respondents in October-November 2012, mainly from Europe and North America. The study identified the most important questions, which should form the core of any National Household Travel Survey (NHTS). This list is especially useful for countries which do not yet have implemented a NHTS, and for defining the set of questions in case a harmonized household travel survey spanning across different countries will be initialized. Our analyses also clearly pinpointed different evaluations according to the experts' characteristics, thus it could be concluded that unanimity is certainly not complete. Thus, whenever developing standards for travel surveys, these differences should be taken into account, according to both the prospective data users the intended data usages. Especially the differences with respect to the regional context (North-American versus European), and involvement with the NHTS implementation process were found to be significan
Riding with distraction: Exploring the intention and behaviour of smartphone use while riding among motorcyclists in Vietnam
No full textThe pervasive use of smartphones has significantly contributed to distracted driving, a leading cause of road traffic accidents globally. This study investigates the behavioural intentions and patterns of smartphone use while riding among motorcyclists in Vietnam, integrating the Theory of Planned Behaviour (TPB) with the Stimuli-Organism-Response (SOR) framework to encompass factors such as riding exposure and time pressure. A questionnaire survey was conducted, gathering data from 1,051 young motorcyclists. Using Partial Least Squares Structural Equation Modelling (PLS-SEM), the study identifies high levels of smartphone engagement during riding, driven primarily by Perceived Behavioural Control (PBC), which exhibited a stronger influence on behaviour than Attitudes and Social Norms. Notably, time pressure significantly enhanced the intention to use smartphones, suggesting that riding under time constraints could exacerbate the risk of distracted riding incidents. The findings highlight critical implications for road safety interventions and policy formulation, emphasising the need for targeted educational programmes and stricter enforcement measures to mitigate smartphone-induced distractions among motorcyclists at a higher risk of traffic accidents. The study contributes to understanding distracted riding behaviours in motorcycle-dominant regions, providing a foundation for future research and preventive strategies.This work was supported by grant obtained from Wallonie-Bruxelles International (WBI), Belgium for the project 2.17 (Renforcement des compétences en matière de recherche, d’enseignement et de consultance dans le domaine de la logistique) and by the FNRS, Belgium fund supporting the sabbatical leave of Mario Cools
Assessing the impact of traffic climate and risk-taking attitude on the risky riding behaviour of young motorcyclists in Vietnam
No full textThis research investigates the interrelationships between traffic climate perceptions, risk-taking attitudes, and motorcyclists' riding behaviours in Vietnam using the Driver Behaviour Questionnaire (DBQ) and Traffic Climate Scale (TCS). The study, conducted among young motorcyclists aged 18-24, explores how perceptions of traffic climate, characterised by functionality, external affective demands, and internal requirements, influence risk-taking attitudes and subsequent riding behaviours. The analysis reveals that external affective demands positively correlate with higher risk-taking attitudes, whereas internal requirements are inversely related. Increased risk- taking attitudes predict frequent riding errors, violations, and lapses. These findings underscore the complexity of factors contributing to hazardous riding behaviours and highlight the need for targeted interventions that address both individual attitudes and perceived traffic conditions to improve road safety. The study emphasises the critical role of traffic climate in shaping riding behaviours, providing essential insights for developing effective road safety strategies in developing countries.We express our sincere gratitude to the anonymous reviewers and the editors for their insightful and constructive feedback, which has significantly improved the quality of this research. This work was supported by a grant obtained from Wallonie-Bruxelles International (WBI) for the project 2.17 (Renforcement des compétences en matière de recherche, d’enseignement et de consultance dans le domaine de la logistique) and by the FNRS (National Fund for Scientic Research) in Belgium. We also acknowledge the ethical approval of the study by the University of Danang, by decision 3542/QD-DHDN
Development and validation of a survey for wellbeing and interaction assessment by occupants in office buildings with adaptive facades
Full text linkpeer reviewedAssessing well-being and occupants satisfaction is a growing concern in façade design practice, as increasing recognition of the value of well-being of occupants in office buildings. The objective of this study was to develop a validated survey for evaluating the indoor environmental quality in office buildings with adaptive facades to provide feedback to designers and operators and inform the building community at a large. A total of 70 employees completed an initial survey containing 14 questions grouped into six domains (OCAFAS-14). Factor analysis of the responses was performed resulting into a final survey grouped into three domains and containing 15 questions (general feeling, thermal comfort and acoustic comfort) (OCAFAS-15). Statistical analysis indicated that the OCAFAS-15 had good validity, reliability, and internal consistency. The survey succeeded to benchmark well-being, satisfaction and interaction changes of employees in an open-space office with dynamic louvers. The results indicates that the OCAFAS-15 provides a basis for dialogue between occupants and façade engineers regarding the user interaction, façade control adaptation and in particular in tracking of changes of indoor environmental quality, evaluating response of facades to occupants’ requirements, and guiding the operation of adaptive facades. A validated well-being and occupant interaction survey could be particularly useful in benchmarking building with adaptive facades and recognizing and managing occupants’ dissatisfaction in buildings with dynamic facades
Unveiling the drivers of modal switch from motorcycles to public transport in Southeast Asia
Full text linkpeer reviewedMost studies on commuter and public transport mode choice rely on theoretical frameworks that draw boundaries between the utility function, social-ecological system, demographic and socio-economic attributes, and psychological theory. While models predicting the shift towards public transport are commonly applied in developed countries, there is a lack of similar studies that construct these models in developing countries. In addition, in some developing countries, the motorcycle is one of the main private motorised travel modes. Therefore, the modal shift from motorcycles to public transport in Southeast Asia to reduce private mobility is one of the important topics to examine. This paper presents a systematic literature review, utilising a comprehensive search strategy across electronic databases and reputable sources to identify directed acyclic graphs (DAGs), revealing factors influencing the choice and intention to shift to public transport. Data synthesis from selected studies highlights the intrinsic and extrinsic variables influencing public transport use, motorcycle use, and the modal shift to public transport. The study also proposes a theoretical framework for the modal shift in usage from motorcycles to public transport
Tensor Decomposition for Spatiotemporal Mobility Pattern Learning with Mobile Phone Data
Full text linkpeer reviewedDetecting urban mobility patterns is crucial for policymakers in urban and transport planning. Mobile phone data have been increasingly deployed to measure the spatiotemporal variations in human mobility. This work applied non-negative Tucker decomposition (NTD) to mobile phone-based origin–destination (O-D) matrices to explore mobility patterns’ latent spatial and temporal relationships in the province of Liège, Belgium. Four [Formula: see text] traffic tensors have been built for one regular weekday, one regular weekend day, one holiday weekday, and one holiday weekend day, respectively. The proposed method inferred spatial clusters and temporal patterns while interpreting the correlation between spatial clusters and temporal patterns through geographical visualization. As a result, we found the similarity of O-D and destination–origin (D-O) patterns and the symmetry for the trips of the temporal patterns with evening peak and morning peaks on the weekday. Moreover, we investigated the attraction of different spatial clusters with two temporal patterns on a regular weekday and validated the reconstructed demand using population counts and commuting matrices. Finally, the differences in spatial and temporal interactions have been addressed in detail
Low-cost shared mobility alternatives in rural areas: A case study of ride-sharing benches in the German-speaking community of Belgium
Full text linkpeer reviewedThis paper focuses on a low-cost shared mobility solution in the German-speaking Community of Belgium (Ostbelgien). Like many other rural areas, Ostbelgien is car-oriented and has low public transport coverage. The main objective of this paper is to introduce the concept of ride-sharing benches in Ostbelgien. In addition, an online survey was conducted to assess the knowledge of the concept and its potential use according to socio-economic, socio-cognitive, and geographic characteristics. The survey demonstrated that there is a high potential for using it in the future. Socio-economic and socio-cognitive factors determine the potential use of ride-sharing benches, whereas geographical factors predominantly influence knowledge of the concept. The users consider using the benches in combination with the scheduled bus service. This service can be a low-cost and practical shared mobility solution, especially for rural areas with low public transportation coverage. The locations of the benches can be integrated into an application to stimulate the use of the ride-sharing benches
Applying a Bayesian network for modelling the shift from motorcycle to public transport use in Vietnam
Full text linkpeer reviewedTransport mode choice models commonly incorporate factors such as utility maximisation, socio-ecological considerations, socio-demographic characteristics, and psychological factors. However, there is still a lack of integrated models linking objective factors, such as travel mode attributes, demographic & socio-economic characteristics and built environmental characteristics, with subjective factors, such as attitudes, personal norms, and perceived behavioural control, to better understand the commuters’ modal choices. Furthermore, a clear research gap exists on mode choice behaviour in Southeast Asian countries, where motorcycling is widespread. This study aims to address these research gaps by analysing data gathered from 618 Vietnamese motorcyclists between December 2020 and February 2021. Reliability analysis and a Bayesian network are used to identify the objective and subjective factors influencing the intention to use public transport among Vietnamese motorcyclists. The findings highlight that among five subjective factors, personal norm is the most sensitive parameter in calculating the posterior probability distribution of intention and decision to use public transport along with other objective factors, namely travel time and travel cost. The results also reveal that motorcyclists aged 23 + have a higher perceived value of travel time than those aged 23–. In contrast, motorcyclists aged 23– and female motorcyclists have a higher perceived value toward environment-friendly travel modes, such as public transport. At the same time, they do not try to differentiate themselves from the societal standards in terms of motorcycle usage. The findings of this study provide valuable insights to local urban/transport planners and policymakers in Southeast Asian countries
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