IATSS Research最新文献

{"title":"Understanding the influence of environmental factors on driver speed: A structural equation modeling analysis","authors":"Abbas Sheykhfard ,&nbsp;Farshidreza Haghighi ,&nbsp;Soheila Saeidi ,&nbsp;Mohammad SafariTaherkhani ,&nbsp;Subasish Das","doi":"10.1016/j.iatssr.2024.08.001","DOIUrl":"10.1016/j.iatssr.2024.08.001","url":null,"abstract":"<div><p>This study examined the influential roadway and contextual factors affecting drivers' speed selection through a comprehensive investigation employing structural equation modeling. Roadway and contextual variables including road curvature, presence of roundabouts, adverse weather conditions, and access were investigated using infrared speed sensors. The analysis revealed that specific roadway and contextual factors such as field variables, uphill and downhill road inclines, particular road curvature, and rainy weather significantly influence drivers' chosen speeds, while factors such as road access, nighttime conditions, larger road curvature, and signage exhibit a lesser impact. Notably, the study also found a positive correlation between road curvature radius and driver-chosen speed. The study's implications for transportation infrastructure planning and road safety interventions are underscored, with potential applications in road design, signage improvement, and weather-responsive measures to regulate driver speed choices in specific roadway and contextual conditions.</p></div>","PeriodicalId":47059,"journal":{"name":"IATSS Research","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0386111224000396/pdfft?md5=687a99d18d6111103ad982c2a7bacdc6&pid=1-s2.0-S0386111224000396-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142094829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of luminance of head-up displays on recognition of visual objects on roads","authors":"Takashi Hosokawa ,&nbsp;Hiroshi Hashimoto ,&nbsp;Takayuki Tsui ,&nbsp;Keisuke Saito ,&nbsp;Tomotaka Igarashi ,&nbsp;Akinari Hirao","doi":"10.1016/j.iatssr.2024.08.003","DOIUrl":"10.1016/j.iatssr.2024.08.003","url":null,"abstract":"<div><h3>Objective</h3><p>The purpose of this study is to investigate the effect of visual obstruction when a head-up display (HUD) is presented in front of a driver's field of view.</p></div><div><h3>Background</h3><p>The use of HUDs is expected to increase due to advances in augmented reality (AR) technology. A conventional HUD is displayed at a relatively low position in relation to the driver's viewpoint and has little effect on their front view. However, while an HUD, such as the AR-HUD, is presented in front of the driver's field of vision and helps them in presenting ADAS information, there is a concern that this display may obscure visual objects on the road from the driver's field of vision.</p></div><div><h3>Method</h3><p>An experiment using a mockup consisting of a HUD and a driver's seat was conducted with 28 participants. A passenger car, motorcycle, and crossing pedestrian were presented as visual objects on a 65-in monitor behind the image of the HUD. Participants were asked questions under different conditions with changes in the HUD luminance and asked to correctly answer questions regarding changes in the inter-vehicle distance and the existence of visual objects on the road. The number of correct answers provided by the participants was recorded.</p></div><div><h3>Results</h3><p>The experimental results revealed that the HUD had an effect under the twilight condition wherein the background luminance was low. Furthermore, analyzing the number of correct answers for each visual target revealed that the HUD had an effect under conditions wherein the size of the visual object was small.</p></div><div><h3>Conclusion</h3><p>It was experimentally derived that the luminance ratio R_luminance = 1.1 was the threshold value that affected the recognition of the visual object in the background when the HUD was presented in front of the driver's field of view.</p></div><div><h3>Implication</h3><p>The threshold value of the luminance ratio R_luminance obtained in this study can be considered when deciding how to properly display the HUD in front of the driver's field of view.</p></div>","PeriodicalId":47059,"journal":{"name":"IATSS Research","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0386111224000414/pdfft?md5=bededfbe013a64fef8b3168734906277&pid=1-s2.0-S0386111224000414-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142089116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Obituary Richard Allsop 1940–2024","authors":"Nicola Christie","doi":"10.1016/j.iatssr.2024.07.004","DOIUrl":"10.1016/j.iatssr.2024.07.004","url":null,"abstract":"","PeriodicalId":47059,"journal":{"name":"IATSS Research","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0386111224000372/pdfft?md5=7562c674066f0a83627bc60c7946f99b&pid=1-s2.0-S0386111224000372-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing accident frequency prediction models for urban roads: A case study in São Paulo, Brazil","authors":"Cassiano Augusto Isler ,&nbsp;Yue Huang ,&nbsp;Lucas Eduardo Araújo de Melo","doi":"10.1016/j.iatssr.2024.07.002","DOIUrl":"10.1016/j.iatssr.2024.07.002","url":null,"abstract":"<div><p>The growing number of vehicles and the evolving behaviour of road users present new and additional challenges to road safety. Study on the variables that influence the frequency of crash occurrences such as road geometry, junction, speed and land use are needed as they have proven effects on the number and severity of crashes. In this paper, we identify and assess the variables, namely road geometry, vehicle speed, traffic volume, land use and junction type, and develop accident frequency prediction models for a main urban transport corridor in São Paulo, Brazil. Crash data was provided by the traffic management company of the city, other datasets were obtained from a mix of primary and secondary sources including roadside cameras, Geographic Information Systems (GIS) and digital mapping tools. The studied road was segmented and the coefficients associated with variables in the segments were obtained using Poisson regression through a stepwise variable selection procedure. Two models with junctions density per type (access/km, T-junction unsignalised/km, T-junction signalised/km and crossroads/km) and junction density per merged type (signalised/km and unsignalised/km) along with land use per type (commercial and residential) are developed. The junction density and land use are found to be significant and positively correlated with crash frequency. The models were evaluated by statistical means for their accuracy of predicting the crashes, and validated with additional information obtained from field observation.</p></div>","PeriodicalId":47059,"journal":{"name":"IATSS Research","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0386111224000359/pdfft?md5=059d4ac96a5ef80e3f10822fc09b7486&pid=1-s2.0-S0386111224000359-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141960177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling gap acceptance behaviour during lane change with EDIV data: A deep dive into driving behaviour on expressway using a three level mixed effect linear regression approach","authors":"Akshay Gupta ,&nbsp;Pushpa Choudhary ,&nbsp;Manoranjan Parida","doi":"10.1016/j.iatssr.2024.07.003","DOIUrl":"10.1016/j.iatssr.2024.07.003","url":null,"abstract":"<div><p>Lane change has a potential significance in road safety. Gap acceptance phenomena serves as a primary and critical phase in lane change maneuver. This study aims to investigate the gap acceptance behaviour of drivers during lane changes on expressways, with a focus on understanding how various factors influence drivers' decisions to change lanes. An extensive dataset collected through various sensors tailored for expressway driving, known as the ‘Expressway Drive: Instrumented Vehicle (EDIV) Dataset’ is utilized. Driving data from 59 drivers covering a distance of around 4000 km was used in the current study. Total 2578 lane changing events are identified through computing lateral deviations measured through 3D LiDAR sensor. Substantial differences are observed within the groups in primary analysis which suggest that lane-change direction significantly affect gap acceptance. To effectively manage both intra- and inter-cluster variances, this study employs two separate three levels mixed-effects linear models. These models account for the interdependence of gap acceptance characteristics within individual drivers and for different directions of lane changes by incorporating random effects. Furthermore, these models examine relationships between lead/ lag gap acceptance and the various influencing factors as fixed effects. It was found that factors such as speed of the subject vehicle, gap position, relative speeds, and surrounding vehicle types had influence on gap acceptance during lane changes on expressways. The insights gained from this study could inform the development of advanced driver assistance systems (ADAS) as well as development of autonomous vehicles, contributing to improved road safety and traffic flow management in high-speed environments.</p></div>","PeriodicalId":47059,"journal":{"name":"IATSS Research","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0386111224000360/pdfft?md5=378c4ebb7caf3e053fd1f4f8c7d6b169&pid=1-s2.0-S0386111224000360-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141853568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bicycle riding environment identification for detecting traffic violation in a riding safety support information system","authors":"Tetsuya Manabe ,&nbsp;Hiroaki Arai ,&nbsp;Aya Kojima ,&nbsp;Jeyeon Kim","doi":"10.1016/j.iatssr.2024.06.006","DOIUrl":"10.1016/j.iatssr.2024.06.006","url":null,"abstract":"<div><p>This paper proposes a method for identifying the bicycle riding environment using only onboard equipment. Initially, a fundamental subsystem is established for identifying the bicycle riding environment, and its functionality is validated. The findings indicate that the subsystem, utilizing an open-source trained model, can detect riding on roadways but not on sidewalks. Consequently, we emphasize the need for transfer learning, specifically using sidewalk viewpoint images, to enable the identification of bicycle riding environments. Subsequently, we conduct bicycle riding environment identification by employing a transfer learning model with manually labeled training data. The results demonstrate that after transfer learning, sidewalk riding detection, which was previously unachievable, becomes feasible. The identification rate was over 80%. Furthermore, we develop four riding environment identification algorithms, including the transfer learning model, and compare their performance across various road environments and riding conditions. Consequently, it is established that the region of interest (ROI) extension identification algorithm exhibits the highest identification performance (93% on average). As a result, this paper contributes valuable insights into the realization of bicycle riding environment identification, particularly in the context of detecting traffic violations within the riding safety support information system.</p></div>","PeriodicalId":47059,"journal":{"name":"IATSS Research","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0386111224000335/pdfft?md5=ca6d7d1c7cf199b5be6af738218a180a&pid=1-s2.0-S0386111224000335-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141638296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neighborhood influence on walking acceptability to bus stops in Hanoi, Vietnam","authors":"Ngo Trung Phuong ,&nbsp;Masahiko Kikuchi ,&nbsp;Aya Kojima ,&nbsp;Hisashi Kubota","doi":"10.1016/j.iatssr.2024.07.001","DOIUrl":"10.1016/j.iatssr.2024.07.001","url":null,"abstract":"<div><p>In Asian megacities, behind wide streets accessible by car, there are areas of narrow streets that are inaccessible by bus or car. This study investigates measures to improve access to bus stops in Hanoi from the perspective of the neighborhood environment of these residents. These results are expected to contribute to solving similar problems in Asian megacities. The survey divided residents into two groups, one group living on wide streets and the other group living on narrow streets in Hanoi, then obtained and analyzed data on their attitudes towards walking to bus stops through a questionnaire survey. The results revealed the following. The distance to the bus stop was accessible for both groups. Between the two groups, the attitude towards walking to the bus stop is more influenced by the location factor than the occupation (employee or student). Factors such as the benefits of walking, infrastructure, and security conditions play an important role in the decision to walk to the bus stop during the daily commute.</p></div>","PeriodicalId":47059,"journal":{"name":"IATSS Research","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0386111224000347/pdfft?md5=3eda624865235c91927f8b9e63e309d9&pid=1-s2.0-S0386111224000347-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141638297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estimation of passing sight distance required for operation of truck platooning on two-lane highways in North America","authors":"Tanvir Chowdhury,&nbsp;Peter Y. Park,&nbsp;Kevin Gingerich","doi":"10.1016/j.iatssr.2024.05.003","DOIUrl":"https://doi.org/10.1016/j.iatssr.2024.05.003","url":null,"abstract":"<div><p>The most well-known benefits of heavy commercial vehicle (HCV) platooning include fuel savings and emission reductions. In addition, HCV platooning under SAE automation level 4 or 5 can mitigate the truck driver shortage in North America by eliminating the driver from one or more HCVs in a platoon. This study investigates the passing sight distance (PSD) required to overtake a truck platoon or long combination vehicle (LCV). The PSD is one of the most important highway geometric design parameters. This study modified the 2018 AASHTO's PSD model for HCV platooning and long combination vehicles (LCVs). A micro-simulation model is used to validate the outcomes of the modified AASHTO model. The estimated PSDs suggest that it may be possible to operate two-HCV platoons on two-lane highways that already allow LCV operation if appropriate passing lanes are installed. The study's approach and findings are expected to help transportation engineers and government agencies prioritize two-lane highway sections for possible HCV platooning operation.</p></div>","PeriodicalId":47059,"journal":{"name":"IATSS Research","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0386111224000232/pdfft?md5=7b66a019cac7e61fa83ee15a3cadc22d&pid=1-s2.0-S0386111224000232-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141594271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of public transport in supporting the urban cultural and creative functions","authors":"Fumihiko Nakamura","doi":"10.1016/j.iatssr.2024.06.002","DOIUrl":"https://doi.org/10.1016/j.iatssr.2024.06.002","url":null,"abstract":"<div><p>In our three-year project, the team set the final goal as a proposal for future cities and public transportation linkages in the context of cultural and creative activities in cities. As the project leader, the author first introduces a basic discussion of cities and urban public transport modes, followed by an analysis of subjective accessibility related to well-being. Second, the author introduces field surveys in New York, London, and Wien as advanced cities with excellent cultural and creative activities, as well as Toyama City in Japan, where the importance of public space redesign related to quality public transport in conjunction with cultural and creative activities is identified. Finally, the author summarizes the conclusion of the research project, including the proposal as “Yoin City” (city or district where aftertaste of any cultural and creative activities is highly respected mainly with excellent design of urban public spaces and public transport services) with “new local” concept primarily for middle-sized cities in Japan.</p></div>","PeriodicalId":47059,"journal":{"name":"IATSS Research","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S038611122400027X/pdfft?md5=28a284b9e61e020ed5488c9d37b6a2c0&pid=1-s2.0-S038611122400027X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141480026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Presentation technique for bicycle safety information system and its effectiveness verification","authors":"Masaki Noji ,&nbsp;Aya Kojima ,&nbsp;Jeyeon Kim ,&nbsp;Tetsuya Manabe","doi":"10.1016/j.iatssr.2024.06.001","DOIUrl":"https://doi.org/10.1016/j.iatssr.2024.06.001","url":null,"abstract":"<div><p>In this study, we conducted bicycle riding experiments that focus on the method of information presentation by an automated system to cyclists, with the intent to design an information system related to bicycle safety information. In an evaluation of information presentation, we confirmed that auditory presentation was the most effective from the viewpoints of both recognition and comprehension. In addition, information presented using the auditory method was more likely to be recognized than information presented using the visual and tactile method combined. The results of the analysis of variance for recognition showed that the visual presentation method had no significant effect. In addition, the experiments involved behavioral observation using the system and a questionnaire survey on changes in behavior before and after experiencing the system. The results showed that information was correctly conveyed by the system using a combination of auditory, tactile, and visual presentation methods, regardless of the users' degree of awareness of the system. Two weeks after the experiment, a survey was conducted to investigate the changes in the participants' awareness and behavior regarding risky or illegal riding. The results showed an improvement in the awareness of risky or illegal riding in daily life and an increase in right behavior, confirming the effectiveness of this system. Consequently, the results demonstrate the effectiveness of the system and provide knowledge for realizing a bicycle riding safety support information system.</p></div>","PeriodicalId":47059,"journal":{"name":"IATSS Research","volume":null,"pages":null},"PeriodicalIF":3.2,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0386111224000268/pdfft?md5=a8ad70e32139197e99e70f3ce1f3b189&pid=1-s2.0-S0386111224000268-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141435125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}