Transportation Research Record: Journal of the Transportation Research Board最新文献_第7页

Deformation Responses of a Geosynthetic Reinforced Soil-Integrated Bridge System Under Static Loading and Sensitivity Analysis of Influential Factors Based on the Improved Grey Relational Method 土工合成材料加固土桥系统在静载荷下的变形响应以及基于改进灰色关系法的影响因素敏感性分析

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-03-29 DOI: 10.1177/03611981241236471

Tiekun Peng, Yunsheng Zhu, Kaifeng Wang, Hongchao Huang

{"title":"Deformation Responses of a Geosynthetic Reinforced Soil-Integrated Bridge System Under Static Loading and Sensitivity Analysis of Influential Factors Based on the Improved Grey Relational Method","authors":"Tiekun Peng, Yunsheng Zhu, Kaifeng Wang, Hongchao Huang","doi":"10.1177/03611981241236471","DOIUrl":"https://doi.org/10.1177/03611981241236471","url":null,"abstract":"A numerical parametric study is conducted to evaluate the effects of various parameters on the deformation responses of a geosynthetic reinforced soil-integrated bridge system (GRS-IBS) under static load. The investigated parameters include the abutment height, reinforcement spacing, reinforcement length, reinforcement stiffness, bridge load, and backfill internal friction angle. The improved grey relational method is used to investigate the sensitivity of influential factors on the deformation responses of the GRS-IBS. The simulation results indicate that the abutment height, reinforcement spacing, and bridge load have a significant impact on the performance of the GRS-IBS with respect to lateral displacement and settlement, while the effects of reinforcement length, reinforcement stiffness, and backfill internal friction angle on the deformation behavior of the abutment are negligible. Differential settlements between the girder and approach are minimal under all conditions. The potential failure envelope of the GRS-IBS exhibits a “L” shaped configuration where the potential failure surface starts beneath the inner edge of the strip footing, extending vertically downward to half of the wall height and further bifurcating toward the strip footing and the toe of the wall. The results of the improved grey relational analysis show that reinforcement spacing is the most sensitive to the lateral displacement of the GRS-IBS. The abutment height and bridge load are more sensitive to abutment deformation than other influential factors. These three parameters are crucial to the deformation behavior and should be given primary consideration when designing a GRS-IBS.","PeriodicalId":509035,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"89 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Colorado’s Transportation Planning Rule to Reduce the Greenhouse Gas Pollution Impacts of Planning Choices in the Built Environment 科罗拉多州减少建筑环境规划选择对温室气体污染影响的交通规划规则

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-03-29 DOI: 10.1177/03611981241234900

Shoshana Lew, Herman Stockinger, Rebecca White, Theresa Takushi, Erik E. Sabina, Chris Porter

{"title":"Colorado’s Transportation Planning Rule to Reduce the Greenhouse Gas Pollution Impacts of Planning Choices in the Built Environment","authors":"Shoshana Lew, Herman Stockinger, Rebecca White, Theresa Takushi, Erik E. Sabina, Chris Porter","doi":"10.1177/03611981241234900","DOIUrl":"https://doi.org/10.1177/03611981241234900","url":null,"abstract":"For many years, the question of how to measure the pollution impacts of infrastructure choices in the built environment has perplexed policymakers, complicated by the reality that use of any transportation system affects the choices of countless individuals in their daily lives. Nonetheless, extensive research as well as common sense reflect that the options available—and the infrastructure built primarily by public sector agencies—influence the choices that those individual users are able to make. With transportation being the number one source of greenhouse gas pollution in the U.S.A., the implementation of practical approaches to tackling this urgent problem depends on establishing viable policies and methodologies for assessing and regulating these impacts of building choices, often referred to as “induced demand.” Colorado’s recently implemented Greenhouse Gas Pollution Reduction Planning rule, established in 2021 following new state legislation, offers a case study of a system to implement pollution reduction targets for transportation planning agencies, leveraging the competencies, authorities, and influences of specific institutions that govern transportation planning within the state.","PeriodicalId":509035,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Examining Contingency and Inflation Practices Within Several Departments of Transportation in the United States 审查美国几个交通部的应急和通货膨胀做法

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-03-29 DOI: 10.1177/03611981241235171

Abdullah Alsharef, Daniel Findley, Edward W. Jaselskis, Thomas Dudley, Kihyun Pyo, Guangchuan Yang

{"title":"Examining Contingency and Inflation Practices Within Several Departments of Transportation in the United States","authors":"Abdullah Alsharef, Daniel Findley, Edward W. Jaselskis, Thomas Dudley, Kihyun Pyo, Guangchuan Yang","doi":"10.1177/03611981241235171","DOIUrl":"https://doi.org/10.1177/03611981241235171","url":null,"abstract":"Transportation projects are notorious, among both the public and transportation professionals, for missing their intended cost and schedule targets as a result of project complexity and uncertainties. The significant discrepancy between cost estimates and final project costs remains a major concern for state Departments of Transportation (DOTs). Several risk factors, including estimation errors and price fluctuations, contribute to these discrepancies and are typically managed by adding a contingency to project estimates. Cost escalation can also result from inadequate adjustment for inflation in estimates, given the current economic environment and the lengthy duration of major transportation projects. This paper summarizes how several state DOTs apply contingencies to mitigate the impact of certain risks and adjust their State Transportation Improvement Program (STIP) revenues and costs to account for inflation. The study surveyed 13 state DOTs to understand how contingencies are applied to the three major components of transportation projects (construction, right of way, and utilities). Additionally, interviews were conducted with 15 state DOTs to understand how they address inflation, particularly as it pertains to the STIP process. The results indicate that most DOTs apply contingency allowances to their project estimates during the early project development and maintain some level of contingency allowance at the plans, specifications, and estimate (PS&E) stage. As for addressing inflation, most state DOTs include inflation of the project cost in the project estimates to the time of bid letting or year of expenditure. The findings of this study can benefit state DOTs that are reassessing their strategies for implementing contingency and inflation within their STIP.","PeriodicalId":509035,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"43 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140368081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Drivers and Barriers to Public Transport Usage: Insights from Psychographic Profiles Using Latent Class Analysis 公共交通使用的驱动因素和障碍：利用潜类分析从心理特征分析中获得的启示

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-03-29 DOI: 10.1177/03611981241233580

Jan Vallée, Lisa Ecke, Lukas Barthelmes, P. Vortisch

{"title":"Drivers and Barriers to Public Transport Usage: Insights from Psychographic Profiles Using Latent Class Analysis","authors":"Jan Vallée, Lisa Ecke, Lukas Barthelmes, P. Vortisch","doi":"10.1177/03611981241233580","DOIUrl":"https://doi.org/10.1177/03611981241233580","url":null,"abstract":"To achieve climate goals in the transport sector, many countries are trying to promote the use of public transport. However, to implement effective policies, one must understand the motivations of people who use or do not use public transport today. In this study, we examine the psychographic profiles using latent class analysis to identify the reasons why people use or do not use public transport and link these profiles to reported travel behavior. For the latent class analysis, we use selected psychological items of the German Mobility Panel (MOP), a national household travel survey, that capture attitudes toward public transport. The results highlight four classes that differ based on their psychological profiles: PT-Averse, Privacy Aware Environmentalists, Pragmatists, and PT-Lovers. The results further show that Privacy Aware Environmentalists and PT-Lovers, who have a strong personal norm, frequently use public transport and environmentally friendly transport modes. Thus, the personal norm is a driver of public transport use. The lack of privacy, which the Privacy Aware Environmentalists complain about in public transport, is not a barrier to public transport use.","PeriodicalId":509035,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"54 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140366579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Demand-Responsive Transit Service With Soft Time Windows Considering Real-Time Disruptions Based on Bounded Rationality 基于有限理性的考虑实时中断的软时间窗口需求响应型公交服务

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-03-29 DOI: 10.1177/03611981241236479

Hongfei Wang, Hongzhi Guan, H. Qin, Jun Guo

{"title":"Demand-Responsive Transit Service With Soft Time Windows Considering Real-Time Disruptions Based on Bounded Rationality","authors":"Hongfei Wang, Hongzhi Guan, H. Qin, Jun Guo","doi":"10.1177/03611981241236479","DOIUrl":"https://doi.org/10.1177/03611981241236479","url":null,"abstract":"Demand-responsive transit (DRT) with smartphone-based applications is emerging as a flexible and sustainable mobility service, transforming urban transportation. Nevertheless, to satisfy the real-time and inconsistent demand, it is becoming increasingly important to capture the decision-making psychology of order cancellations. In this study, a two-phase optimization framework is presented in response to real-time disruptions, including order cancellations and the insertion of new real-time passengers. In contrast to random real-time demand, this paper is more concerned about the impacts of the feedback information on order cancellations. Bounded rationality is incorporated into the model to discuss the decision-making process of cancellation behaviors. With regard to the soft window, a compensation strategy is proposed to promote the profit while encouraging passengers for a long-term use. Additionally, solution algorithm based on variable neighborhood search (VNS) and rolling horizon is constructed to approach the Pareto solutions set. To testify the validity of the proposed algorithm, small-scale experiments in simplified Sioux Falls network are investigated for multiple runs. Meanwhile, a real-world case study in Beijing is explored to evaluate the system performance considering real-time disruptions. The results indicate that the dynamic DRT service can substantially improve the system profit but increase the penalty cost. The profit presents a significant improvement to 940 (renminbi) RMB as a result of the insert of real-time passengers. This study, therefore, not only provides a deeper insight into the analysis of passenger cancellation behavior but also contributes to construct a more flexible DRT service.","PeriodicalId":509035,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"65 45","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140364982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of Conventional and Engineered Surface Asphalt Mixtures Through Empirical and Fundamental Performance Tests 通过经验和基本性能测试评估传统和工程表面沥青混合料

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-03-29 DOI: 10.1177/03611981241234915

Omar Othman, B. Underwood, Jhony Habbouche, I. Boz, S. Diefenderfer

{"title":"Assessment of Conventional and Engineered Surface Asphalt Mixtures Through Empirical and Fundamental Performance Tests","authors":"Omar Othman, B. Underwood, Jhony Habbouche, I. Boz, S. Diefenderfer","doi":"10.1177/03611981241234915","DOIUrl":"https://doi.org/10.1177/03611981241234915","url":null,"abstract":"Many state highway agencies are adopting the balanced mix design (BMD) approach to create pavements that are more durable and sustainable, as it allows for performance testing during mix design. Virginia Department of Transportation (VDOT) has started implementing BMD using Cantabro, indirect tensile cracking test (IDT-CT), and asphalt pavement analyzer (APA) rut test to assess durability, cracking, and rutting performance, respectively. However, further efforts are required to validate whether the chosen tests and their thresholds ensure satisfactory long-term performance. This paper addresses three objectives: (i) comparing the performance of control mixtures designed based on volumetrics and their corresponding BMD mixtures, (ii) investigating the consistency between fundamental and empirical tests in characterizing mixtures, and (iii) assessing correlations between these tests to validate or refine VDOT thresholds. This study evaluated 15 VDOT asphalt mixtures, divided into six groups each containing one control mixture and one or two corresponding BMD mixtures. In addition to empirical tests, the dynamic modulus, cyclic fatigue (CF), and stress sweep rutting (SSR) tests were conducted, and correlations were established aiming to preliminary refine VDOT tests’ thresholds. The testing confirmed that almost all BMD mixtures met VDOT’s thresholds and the recommended criteria for CF fatigue index parameter ( Sapp) and SSR Rutting Strain Index ( RSI). Statistical analysis concluded that most BMD mixtures maintained similar or better overall performance. A preliminary analysis across all the mixtures collectively showed a low correlation between Sapp and Cantabro mass loss, no correlation between Sapp and CTIndex, and a moderate correlation between RSI and APA rut depth.","PeriodicalId":509035,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"13 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140367455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Alternative Approaches to Restore the Rheology of Recycled Asphalt Binders 评估恢复再生沥青胶结料流变性的替代方法

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-03-29 DOI: 10.1177/03611981241235179

Andrew Fried, I. Boz, Jaime Preciado, S. Gulzar, B. Underwood, C. Castorena, Jhony Habbouche

{"title":"Evaluation of Alternative Approaches to Restore the Rheology of Recycled Asphalt Binders","authors":"Andrew Fried, I. Boz, Jaime Preciado, S. Gulzar, B. Underwood, C. Castorena, Jhony Habbouche","doi":"10.1177/03611981241235179","DOIUrl":"https://doi.org/10.1177/03611981241235179","url":null,"abstract":"This study evaluates the ability of softer virgin binders, recycling agents (RAs), and extenders to restore the rheology of reclaimed asphalt pavement (RAP) binders to that of control binders. Control binders are those binders that would be specified for use with virgin mixtures. Two procedures for RA dosage selection are examined: 1) dose to restore the intended high-temperature grade; and 2) dose to restore the intended low-temperature grade. A broad range of point parameters and rheological parameters that measure the balance of relaxation and stiffness characteristics are examined at two long-term age levels. The results of recycled binder blends are compared with the control virgin binders statistically. Using softer virgin binders generally resulted in blended binder performance-graded properties that were similar to or better than the control. However, these softer binder systems often exhibited other rheological properties that were inferior to the control. The rheological characteristics of the RA blends varied with the RA type and dosage. Blends with dosages that restored the intended high-temperature grade generally yielded the most favorable comparisons to the control binders. RAs derived from triglycerides and fatty acids and from tall oils generally yield more favorable rheological characteristics than those derived from aromatic extracts. In addition, a vacuum gas oil extender achieved similar blend rheological characteristics to RAs but extenders containing re-refined engine oil bottoms generally yielded a poor balance of stiffness and relaxation characteristics. Rheological balance parameters are generally weakly correlated, suggesting they provide unique insight into the rheological behavior of binders.","PeriodicalId":509035,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"94 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140365818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vehicle Delay Model for Signalized Midblock Crosswalk Under Mixed Traffic Conditions 混合交通条件下信号灯控制的街区中央人行横道的车辆延迟模型

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-03-29 DOI: 10.1177/03611981241236784

Sandeep Manthirikul, Udit Jain

{"title":"Vehicle Delay Model for Signalized Midblock Crosswalk Under Mixed Traffic Conditions","authors":"Sandeep Manthirikul, Udit Jain","doi":"10.1177/03611981241236784","DOIUrl":"https://doi.org/10.1177/03611981241236784","url":null,"abstract":"For signalized locations, delay is one of the key parameters in assessing the level of service and redesigning the traffic signals. Around the world, Highway Capacity Manual (HCM) and Webster delay models are commonly used in calculating the vehicle delay at signalized intersections, notwithstanding that these models assume homogeneous traffic conditions and lane discipline. Furthermore, it is worth noting that previous studies have mostly focused on developing delay models for signalized intersections, whereas signalized midblock crosswalks were overlooked by past researchers. In view of this, the current study presents a modified vehicle delay model for signalized midblock crosswalks (SMCs) under mixed traffic conditions. Mixed traffic conditions refers to diverse vehicles, complex interactions, and no lane discipline on the road—conditions which are usually noticed in developing nations. The HCM vehicle delay model is modified in the current study by incorporating factors related to mixed traffic conditions and SMCs. To test the accuracy of the proposed model, it was validated with the field delay using data collected at other SMCs in Hyderabad, India. Field delay was calculated by plotting the measured queue length against the signal cycle length. The performance metrics of root mean square error (RMSE), mean absolute percentage error, Nash–Sutcliffe efficiency, RMSE-observations standard deviation ratio, and percent bias were used to test the accuracy of the proposed model. Results revealed that the proposed model yielded the lowest error rates and the highest correlation coefficients between modeled and actual vehicle delay. The maximum error between the field delay and the modeled delay was found to be less than 5%.","PeriodicalId":509035,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"57 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140365139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Safety Assessment of Suburban-Type Arterial Roadways: New Findings Using Heterogeneity Models 郊区类型干道的安全评估：使用异质性模型的新发现

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-03-29 DOI: 10.1177/03611981241236184

Bedan Khanal, Steven Lavrenz

{"title":"Safety Assessment of Suburban-Type Arterial Roadways: New Findings Using Heterogeneity Models","authors":"Bedan Khanal, Steven Lavrenz","doi":"10.1177/03611981241236184","DOIUrl":"https://doi.org/10.1177/03611981241236184","url":null,"abstract":"This study investigates the safety performance of suburban-type roads (STRs), a category of medium-speed arterial roads characterized by high vehicular traffic and limited pedestrian and cyclist mobility. Such roadways present unique challenges in road safety, often overlooked in traditional road design focused predominantly on driver needs. By employing a correlated random parameter ordered probit model to analyze police-reported crash severity data from STRs, this research uncovers critical insights into the factors influencing crash injury severities on these roads. Our findings highlight the nuanced impact of various dimensions, such as road design, traffic volume, and environmental conditions, on STR safety; the results offer a detailed understanding of crash contexts on STRs and point toward targeted interventions for enhancing road safety. These interventions include the potential redesign of roadways to accommodate diverse user needs and the implementation of speed regulation measures tailored to specific road characteristics. This research contributes significantly to the existing body of knowledge on suburban road safety, providing evidence-based recommendations for improving the overall safety of these increasingly prevalent road types. The implications of these findings are far-reaching, offering a foundation for future studies to explore diverse methodologies in road safety analysis and to extend this research to other geographic contexts.","PeriodicalId":509035,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"43 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140368094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Learning from Moped Crash Data: Identifying Risk Factors Contributing to the Severity of Injuries Sustained by Moped Riders 从轻便摩托车碰撞数据中学习：确定导致轻便摩托车驾驶员受伤严重程度的风险因素

Transportation Research Record: Journal of the Transportation Research Board Pub Date : 2024-03-29 DOI: 10.1177/03611981241235177

Chengxin Zhang, Dania Ammar, Zifei Wang, Huizhong Guo, Motao Zhu, Shan Bao

{"title":"Learning from Moped Crash Data: Identifying Risk Factors Contributing to the Severity of Injuries Sustained by Moped Riders","authors":"Chengxin Zhang, Dania Ammar, Zifei Wang, Huizhong Guo, Motao Zhu, Shan Bao","doi":"10.1177/03611981241235177","DOIUrl":"https://doi.org/10.1177/03611981241235177","url":null,"abstract":"Mopeds are light vehicles that provide solutions for short-distance travel, traffic congestion, and environmental pollution issues. However, because of the limited physical protection they offer, moped riders are more likely to sustain severe injuries in a crash than vehicle passengers. This study aims to investigate the features and patterns associated with recent moped crashes and analyzed the severity of injuries sustained by riders and related risk factors in 1,657 moped crashes in Michigan during a five-year period (2017–2021). A multinomial logit model was built to examine the association between crash injury severity levels and 13 variables from three main categories: crash features; rider behaviors/cognitive status; and environmental conditions. The descriptive statistics showed that 79% of injuries sustained by moped riders in crashes were minor, and the injured riders tended to be younger, male, and not wearing helmets. The findings indicate a significant correlation between the severity of injuries sustained by riders and several factors: the type of crash (whether single, head-on, or angle collision); the age of the riders (with older riders being more susceptible), visibility conditions (especially during nighttime); and helmet usage. Notably, single and head-on crashes were the primary causes of injuries. These results highlight the importance of heightened vigilance among moped riders, particularly when navigating poorly maintained surfaces or riding under low-light conditions. It is imperative that riders consistently use helmets to minimize risks. Additionally, setting guidelines or restrictions on helmet use, rider age, riding hours, and permissible areas in which to ride could further contribute to improving overall safety for moped riders.","PeriodicalId":509035,"journal":{"name":"Transportation Research Record: Journal of the Transportation Research Board","volume":"19 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140365813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0