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Longitudinal bicyclist,driver,and pedestrian perceptions of autonomous vehicle communication strategies

Journal of Traffic and transportation Engineering(English Edition) 2023年第1期10卷 31-44页

作者： Nicholas N.Ferenchak Department of Civil Construction&Environmental EngineeringUniversity of New MexicoAlbuquerqueNM 87131USA

We sought to better understand how autonomous vehicle(AV)communication strategies impact human road users’*** specifically,we explored the impact of different external human-machine interface(eHMI)designs on task load,comfort,trust,and *** accomplish this,we created virtual reality(VR)scenarios where human participants interacted with AVs in biking,driving,and pedestrian *** were brought back after initial testing to explore acclimation and learning *** designs included a text-based grille eHMI,a text-based roof eHMI,a text-based driver-side door eHMI,anon-textual LED windshield strip eHMI,and a non-textual side mirror arrow *** presence of an eHMI was the strongest positive predictor of comfort,trust,and acceptance outcomes in the statistical models when controlling for all other *** was a clear divide between text-based eHMIs and non-text eHMIs with text-based eHMIs experiencing better perception *** LED Windshield experienced the worst perception *** were perception acclimation effects detected which were most notable for task load(which decreased over time)and comfort(which increased over time).Perception scores for the different eHMI designs tended to cluster over ***,the acclimation effects had less of an impact than the presence of an *** outcomes had weaker relationships with participant characteristics than with AV *** suggest that eHMI presence and design,AV behavior,and acclimation are most impactful in terms of perceptions.

关键词： Vehicle automation Communication Human-automation interaction Technology acceptance Virtual reality

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Visualization of real-time displacement time history superimposed with dynamic experiments using wireless smart sensors and augmented reality

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Earthquake Engineering and Engineering Vibration 2023年第3期22卷 573-588页

作者： Marlon Aguero Derek Doyle David Mascarenas Fernando Moreu Department of Civil Construction and Environmental EngineeringUniversity of New MexicoCentennial Engineering Center 3056MSC011070210 University Blvd NEAlbuquerqueNM 87131USA Air Force Research Laboratory Space Vehicles DirectorateKirtland Air Force BaseAlbuquerqueNM 87117USA Engineering Institute Los Alamos National LaboratoryLos AlamosNM 8754USA

Wireless smart sensors(WSS)process field data and inform inspectors about the infrastructure health and *** bridge engineering,inspectors need reliable data about changes in displacements under loads to make correct decisions about repairs and *** to displacement information in the field and in real-time remains a challenge as inspectors do not see the data in real *** data from WSS in the field undergoes additional processing and is seen at a different *** inspectors were able to see structural displacements in real-time at the locations of interest,they could conduct additional observations,creating a new,information-based,decision-making reality in the *** paper develops a new,human-centered interface that provides inspectors with real-time access to actionable structural data during inspection and monitoring enhanced by augmented reality(AR).It summarizes and evaluates the development and validation of the new human-infrastructure interface in laboratory *** experiments demonstrate that the interface that processes all calculations in the AR device accurately estimates dynamic displacements in comparison with the *** this new AR interface tool,inspectors can observe and compare displacement data,share it across space and time,visualize displacements in time history,and understand structural deflection more accurately through a displacement time history visualization.

关键词： wireless smart sensor monitoring augmented reality displacement acceleration human-infrastructure interface

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维普期刊数据库

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Over-height truck collisions with railway bridges:attenuation of damage using crash beams

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Earthquake Engineering and Engineering Vibration 2022年第1期21卷 237-252页

作者： Dan Xu Xinxing Yuan Ali Irmak Ozdagli Marlon Agüero Roya Nasimi Tao Wang Fernando Moreu Key Laboratory of Earthquake Engineering and Engineering Vibration Institute of Engineering MechanicsChina EarthquakeAdministrationSanhe 065201China Department of Civil Construction and Environmental EngineeringUniversity of New MexicoAlbuquerqueNM 87131USA Courtesy Appointment Department of Electrical and Computer EngineeringUniversity of New MexicoAlbuquerqueNM 87131USA Courtesy Appointment Department of Mechanical EngineeringUniversity of New MexicoAlbuquerqueNM 87131USA

Railway bridges are susceptible to over-height truck collisions and to address this issue,it is necessary to attenuate the effect of these impacts to ensure the safety of transportation *** study experimentally investigates the effectiveness of crash beams as a cushioning mechanism for railway bridges against ***-height truck and railway bridge impact events were simulated in a 1:5 scale *** design parameters such as the stiffness of the crash beam and the bridge supports were scaled to evaluate different levels of *** experiments were conducted with five configurations consisting of four different types of crash beams and one no-crash beam *** results show that crash beams attenuate bridge total peak dynamic displacement responses between 14.5%and 35.7%,depending on the intensity of the impact and crash beam *** addition,the results show that the average effectiveness in attenuating residual deformation for all four crash beams ranges from 43.03%to 83.40%.Finally,various designs and their effectiveness against lateral impacts with different speeds are *** overall scope of this research is to provide objective information about the design of crash beams for railway bridges based on their response to over-height truck collisions at various speeds.

关键词： railway bridge over-height truck impact attenuation crash beam dynamic displacement scaled model

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