Pub Date : 2025-02-17DOI: 10.1016/j.trd.2025.104648
Md. Shaharier Alam, Yujie Hu
Hurricane Ian, a Category 4 storm that struck Florida’s southwest coast, resulted in 156 fatalities, with two-thirds of the victims being seniors. This highlights the need to address disaster risks for this vulnerable population. This study utilizes anonymized and privacy enhanced mobile phone GPS data to examine mobility disruptions and recovery patterns during Hurricane Ian in southwest Florida, a region with a substantial senior population. It fulfills three objectives: (i) to assess the hurricane’s impact on mobility across different phases of the storm, (ii) to analyze recovery patterns, and (iii) to identify key factors influencing mobility disruptions, recovery, and resilience in elderly-dense communities. The findings indicate that, despite significant disruptions, essential mobility connections remained intact, though some areas continued to struggle even three months after landfall. Socioeconomic and geographic factors were found to influence mobility disruptions, prolonged recovery, and resilience, offering valuable insights for improving disaster planning in elderly-dense communities.
{"title":"Mobility disruption and recovery in southwest Florida’s elderly-dense communities during Hurricane Ian","authors":"Md. Shaharier Alam, Yujie Hu","doi":"10.1016/j.trd.2025.104648","DOIUrl":"10.1016/j.trd.2025.104648","url":null,"abstract":"<div><div>Hurricane Ian, a Category 4 storm that struck Florida’s southwest coast, resulted in 156 fatalities, with two-thirds of the victims being seniors. This highlights the need to address disaster risks for this vulnerable population. This study utilizes anonymized and privacy enhanced mobile phone GPS data to examine mobility disruptions and recovery patterns during Hurricane Ian in southwest Florida, a region with a substantial senior population. It fulfills three objectives: (i) to assess the hurricane’s impact on mobility across different phases of the storm, (ii) to analyze recovery patterns, and (iii) to identify key factors influencing mobility disruptions, recovery, and resilience in elderly-dense communities. The findings indicate that, despite significant disruptions, essential mobility connections remained intact, though some areas continued to struggle even three months after landfall. Socioeconomic and geographic factors were found to influence mobility disruptions, prolonged recovery, and resilience, offering valuable insights for improving disaster planning in elderly-dense communities.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"141 ","pages":"Article 104648"},"PeriodicalIF":7.3,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-02-16DOI: 10.1016/j.trd.2025.104653
Kevin Lanza , Sara Ernst , Katie Watkins , Baojiang Chen
Municipalities are attempting to create safe and comfortable transit systems in the face of climate change. Herein, we determined how trees and different shelter designs impact heat stress at bus stops. Over 13 summer days in 2023, we used sensors to measure wet bulb globe temperature in the shade from trees and four different shelter designs to compare with unshaded areas at 17 bus stops in Houston, Texas. Results from multilevel linear mixed effects modeling revealed that tree-shaded areas were 3.2 °C (5.8 °F) cooler than unshaded areas (p < 0.001). Shelters provided less cooling than trees, and enclosed shelters were less effective than open designs. Further, heat stress was more than 3 °C (5.4 °F) higher under unshaded, enclosed shelters than unshaded areas outside of shelters (p < 0.001). Tree planting at transit stops may be a top option to improve heat safety, and shelters, if improperly designed, may be a form of maladaptation, amplifying health risk.
{"title":"Heat stress mitigation by trees and shelters at bus stops","authors":"Kevin Lanza , Sara Ernst , Katie Watkins , Baojiang Chen","doi":"10.1016/j.trd.2025.104653","DOIUrl":"10.1016/j.trd.2025.104653","url":null,"abstract":"<div><div>Municipalities are attempting to create safe and comfortable transit systems in the face of climate change. Herein, we determined how trees and different shelter designs impact heat stress at bus stops. Over 13 summer days in 2023, we used sensors to measure wet bulb globe temperature in the shade from trees and four different shelter designs to compare with unshaded areas at 17 bus stops in Houston, Texas. Results from multilevel linear mixed effects modeling revealed that tree-shaded areas were 3.2 °C (5.8 °F) cooler than unshaded areas (p < 0.001). Shelters provided less cooling than trees, and enclosed shelters were less effective than open designs. Further, heat stress was more than 3 °C (5.4 °F) higher under unshaded, enclosed shelters than unshaded areas outside of shelters (p < 0.001). Tree planting at transit stops may be a top option to improve heat safety, and shelters, if improperly designed, may be a form of maladaptation, amplifying health risk.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"140 ","pages":"Article 104653"},"PeriodicalIF":7.3,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-15DOI: 10.1016/j.trd.2025.104642
Saad Khan , Hui Li , Mthokozisi Hillary Ncube , Ali A. Butt , Yuzhao Han , John Harvey
The increase in global consumption of disposable products has led to a significant increase in waste generation. Life cycle assessment (LCA) serves as a methodology to evaluate the environmental impact of products and processes throughout their entire life cycle. In recent years, there has been a surge in LCA studies focused on incorporating waste and recycled materials, such as recycled concrete aggregates (RCA), reclaimed asphalt pavement (RAP), polymers, waste plastics, glass, crumb rubber, etc., into asphalt mixtures for pavement construction to enhance mechanical performance and achieve environmental benefits. This study reviewed the existing literature on LCA for these materials. In addition to energy consumption and global warming, researchers are now also focusing on other impact categories, including ozone depletion, acidification, human health particulate matter, leaching, and other factors, emphasizing their significance. Utilizing recycled materials like RAP or polymers in asphalt mixtures may reduce environmental burdens, but their storage, handling, and preparation processes may pose health risks due to water contamination and increased air pollution. The recommendations aim to offer suggestions for future research in pavement LCA.
{"title":"Environmental implications of recycled materials in pavement construction: A comprehensive review and future research directions","authors":"Saad Khan , Hui Li , Mthokozisi Hillary Ncube , Ali A. Butt , Yuzhao Han , John Harvey","doi":"10.1016/j.trd.2025.104642","DOIUrl":"10.1016/j.trd.2025.104642","url":null,"abstract":"<div><div>The increase in global consumption of disposable products has led to a significant increase in waste generation. Life cycle assessment (LCA) serves as a methodology to evaluate the environmental impact of products and processes throughout their entire life cycle. In recent years, there has been a surge in LCA studies focused on incorporating waste and recycled materials, such as recycled concrete aggregates (RCA), reclaimed asphalt pavement (RAP), polymers, waste plastics, glass, crumb rubber, etc., into asphalt mixtures for pavement construction to enhance mechanical performance and achieve environmental benefits. This study reviewed the existing literature on LCA for these materials. In addition to energy consumption and global warming, researchers are now also focusing on other impact categories, including ozone depletion, acidification, human health particulate matter, leaching, and other factors, emphasizing their significance. Utilizing recycled materials like RAP or polymers in asphalt mixtures may reduce environmental burdens, but their storage, handling, and preparation processes may pose health risks due to water contamination and increased air pollution. The recommendations aim to offer suggestions for future research in pavement LCA.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"140 ","pages":"Article 104642"},"PeriodicalIF":7.3,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-02-15DOI: 10.1016/j.trd.2025.104654
Chunqin Zhang , Sixun Wu , Muhan Huang , Martin Skitmore , Wenbin Yao , Xi Lu
The Carbon Emissions Trading (CET) pilot policy represents a significant effort to promote green development. Existing research has focused on the policy’s effects on the environment, economy, or the innovation capacity of enterprises, while relatively few studies have explored its impact on the green transportation development level (GTDL). To fill the gap, this study examines the impact of the CET pilot policy on GTDL using panel data from 30 Chinese cities from 2011 to 2020. First, a framework for evaluating GTDL was established, and the propensity score matching (PSM) method was then used to empirically assess the policy’s effects. The results indicate that GTDL remained low throughout the decade, underscoring significant potential for improvement. Overall, the CET pilot policy significantly enhances GTDL in China. It has a substantial impact on both the eastern and central-western regions of China, while regional differences are observed in high and low latitude regions.
{"title":"Do carbon emissions trading pilot policies contribute to urban green transportation development?","authors":"Chunqin Zhang , Sixun Wu , Muhan Huang , Martin Skitmore , Wenbin Yao , Xi Lu","doi":"10.1016/j.trd.2025.104654","DOIUrl":"10.1016/j.trd.2025.104654","url":null,"abstract":"<div><div>The Carbon Emissions Trading (CET) pilot policy represents a significant effort to promote green development. Existing research has focused on the policy’s effects on the environment, economy, or the innovation capacity of enterprises, while relatively few studies have explored its impact on the green transportation development level (GTDL). To fill the gap, this study examines the impact of the CET pilot policy on GTDL using panel data from 30 Chinese cities from 2011 to 2020. First, a framework for evaluating GTDL was established, and the propensity score matching (PSM) method was then used to empirically assess the policy’s effects. The results indicate that GTDL remained low throughout the decade, underscoring significant potential for improvement. Overall, the CET pilot policy significantly enhances GTDL in China. It has a substantial impact on both the eastern and central-western regions of China, while regional differences are observed in high and low latitude regions.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"140 ","pages":"Article 104654"},"PeriodicalIF":7.3,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-02-12DOI: 10.1016/j.trd.2025.104624
Nathan Laurence, Xiwen Bai
This study conducts life cycle assessment and life cycle costing frameworks to assess the environmental and economic aspects of small containerships respectively, where two power systems (diesel engines and batteries) are compared. Results indicate that all battery scenarios reduce six out of eleven environmental impact categories, including key impacts like acidification, eutrophication, global warming, and photochemical ozone creation potentials, with reductions of at least 61%, 9%, 25%, and 15% respectively. However, batteries perform worse in abiotic depletion potential elements and toxicity-related categories. Moreover, most battery scenarios can reduce net costs by at least 6% when considering cost benefits from end-of-life processes. Furthermore, it is found that lithium nickel manganese cobalt oxide (NMC) 811 batteries have lower costs and environmental impacts than NMC111, due to higher energy density and lower cobalt use. Additionally, green electricity can generally reduce environmental impacts and net costs, compared to grey electricity.
{"title":"Environmental and economic assessments of small containerships’ diesel and electric power systems","authors":"Nathan Laurence, Xiwen Bai","doi":"10.1016/j.trd.2025.104624","DOIUrl":"10.1016/j.trd.2025.104624","url":null,"abstract":"<div><div>This study conducts life cycle assessment and life cycle costing frameworks to assess the environmental and economic aspects of small containerships respectively, where two power systems (diesel engines and batteries) are compared. Results indicate that all battery scenarios reduce six out of eleven environmental impact categories, including key impacts like acidification, eutrophication, global warming, and photochemical ozone creation potentials, with reductions of at least 61%, 9%, 25%, and 15% respectively. However, batteries perform worse in abiotic depletion potential elements and toxicity-related categories. Moreover, most battery scenarios can reduce net costs by at least 6% when considering cost benefits from end-of-life processes. Furthermore, it is found that lithium nickel manganese cobalt oxide (NMC) 811 batteries have lower costs and environmental impacts than NMC111, due to higher energy density and lower cobalt use. Additionally, green electricity can generally reduce environmental impacts and net costs, compared to grey electricity.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"140 ","pages":"Article 104624"},"PeriodicalIF":7.3,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Crumb rubber modified asphalt (CRMA) has emerged as a resultful solution to mitigate the environmental pollution caused by discarded tires. Devulcanized rubberized asphalt (DRA) is a better choice for CRMAs, and composite DRA can improve the impaired high-temperature performance of DRA. However, the researches on composite DRA are limited, and its emission characteristics have yet been quantitatively evaluated. To fill this gap, the emission characteristics and performance of chemically activated rubberized asphalt (CARA) and styrene–butadiene–styrene (SBS)/CARA (SCARA) were evaluated. The results indicate that SCARA achieving the best overall performance. Additionally, CARA and SCARA produce fewer harmful emissions than traditional asphalt rubber (AR), and the chemical devulcanization is more effective in reducing polycyclic aromatic hydrocarbons and benzene series emissions. SBS hybridization outperforms chemical devulcanization in reducing rubber released emissions. Thus, SCARA emerges as a highly promising materials with exceptional comprehensive performance and eco-friendly characteristics.
{"title":"Quantifying emission characteristics and performance evolutions of eco-friendly rubberized asphalt binder","authors":"Chenyang Xue , Naipeng Tang , Xuekai Gao , Huailei Cheng , Yancong Zhang , Weiying Wang , Yupan Cheng , Junyao Wei","doi":"10.1016/j.trd.2025.104647","DOIUrl":"10.1016/j.trd.2025.104647","url":null,"abstract":"<div><div>Crumb rubber modified asphalt (CRMA) has emerged as a resultful solution to mitigate the environmental pollution caused by discarded tires. Devulcanized rubberized asphalt (DRA) is a better choice for CRMAs, and composite DRA can improve the impaired high-temperature performance of DRA. However, the researches on composite DRA are limited, and its emission characteristics have yet been quantitatively evaluated. To fill this gap, the emission characteristics and performance of chemically activated rubberized asphalt (CARA) and styrene–butadiene–styrene (SBS)/CARA (SCARA) were evaluated. The results indicate that SCARA achieving the best overall performance. Additionally, CARA and SCARA produce fewer harmful emissions than traditional asphalt rubber (AR), and the chemical devulcanization is more effective in reducing polycyclic aromatic hydrocarbons and benzene series emissions. SBS hybridization outperforms chemical devulcanization in reducing rubber released emissions. Thus, SCARA emerges as a highly promising materials with exceptional comprehensive performance and eco-friendly characteristics.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"140 ","pages":"Article 104647"},"PeriodicalIF":7.3,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-02-12DOI: 10.1016/j.trd.2025.104640
Junsik Park , Sungtaek Choi , Gurjoong Kim , Hanghun Jo
The present study establishes the concept of demand responsive transit for metropolitan travel (M-DRT) and explores commuters’ mode choice to identify the role of attitudinal characteristics in the Seoul metropolitan area. We develop two discrete choice models (multinomial logit and integrated choice and latent variable models) using a dataset from a web-based stated preference survey. The result shows that unobserved psychological constructs (car-oriented, positive perception on M-DRT, and life satisfaction) play a crucial role in defining mode utility. Specifically, those who are dissatisfied with daily life such as commuting, recreation, and social interaction are likely to prefer M-DRT over traditional alternatives. Also, time valuation (particularly in-vehicle time) for the on-demand mode is significantly lower than those for others, resulting from the productive onboard environment. Based on the findings, we draw insights on the nature of M-DRT, operational strategies, treatment of psychological variables, and the future of the hands-free mode era.
{"title":"Provision of metropolitan demand responsive transit and attitude’s role in mode choice","authors":"Junsik Park , Sungtaek Choi , Gurjoong Kim , Hanghun Jo","doi":"10.1016/j.trd.2025.104640","DOIUrl":"10.1016/j.trd.2025.104640","url":null,"abstract":"<div><div>The present study establishes the concept of demand responsive transit for metropolitan travel (M-DRT) and explores commuters’ mode choice to identify the role of attitudinal characteristics in the Seoul metropolitan area. We develop two discrete choice models (multinomial logit and integrated choice and latent variable models) using a dataset from a web-based stated preference survey. The result shows that unobserved psychological constructs (<em>car-oriented</em>, <em>positive perception on M-DRT</em>, and <em>life satisfaction</em>) play a crucial role in defining mode utility. Specifically, those who are dissatisfied with daily life such as commuting, recreation, and social interaction are likely to prefer M-DRT over traditional alternatives. Also, time valuation (particularly in-vehicle time) for the on-demand mode is significantly lower than those for others, resulting from the productive onboard environment. Based on the findings, we draw insights on the nature of M-DRT, operational strategies, treatment of psychological variables, and the future of the hands-free mode era.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"140 ","pages":"Article 104640"},"PeriodicalIF":7.3,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143394361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-02-11DOI: 10.1016/j.trd.2025.104641
Bumsoo Lee , Sungwon Lee
Despite its potential as a sustainable transportation mode, public transit in many low-density urban and suburban areas in the U.S often generates more CO2 emissions per passenger-mile than privately operated vehicles (POVs), primarily due to low ridership and passenger loads. Using Gradient Boosting Decision Trees (GBDT) and spline regression models, this study investigates the non-linear relationship between population density and the relative carbon efficiency of transit compared to POVs across the 136 largest U.S. urban areas. This study found that the minimum density required for public transit to be more carbon-efficient than driving, while controlling for other factors, is around the lowest 10th percentile of population-weighted density (PWD)—approximately 3.4 persons per acre. Further, a critical density threshold was identified at around the 80th percentile of PWD, about 8.6 persons per acre, beyond which the positive impact of population density on transit’s carbon efficiency significantly shifts up.
{"title":"Toward greener transit: Carbon-efficient density thresholds for public transit vs. private vehicles","authors":"Bumsoo Lee , Sungwon Lee","doi":"10.1016/j.trd.2025.104641","DOIUrl":"10.1016/j.trd.2025.104641","url":null,"abstract":"<div><div>Despite its potential as a sustainable transportation mode, public transit in many low-density urban and suburban areas in the U.S often generates more CO<sub>2</sub> <!-->emissions per passenger-mile than privately operated vehicles (POVs), primarily due to low ridership and passenger loads. Using Gradient Boosting Decision Trees (GBDT) and spline regression models, this study investigates the non-linear relationship between population density and the relative carbon efficiency of transit compared to POVs across the 136 largest U.S. urban areas. This study found that the minimum density required for public transit to be more carbon-efficient than driving, while controlling for other factors, is around the lowest 10th<!--> <!-->percentile of population-weighted density (PWD)—approximately 3.4 persons per acre. Further, a critical density threshold was identified at around the 80th<!--> <!-->percentile of PWD, about 8.6 persons per acre, beyond which the positive impact of population density on transit’s carbon efficiency significantly shifts up.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"140 ","pages":"Article 104641"},"PeriodicalIF":7.3,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143378420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-02-11DOI: 10.1016/j.trd.2025.104645
Hira Tahir , Sami El-Ferik , Muhammad Tayyab
Achieving sustainable development goals requires transformative approaches, with transportation offering significant decarbonization potential. While electric vehicle (EV) research has grown rapidly, early studies focused on bibliometric trends or impact of policies on EV adoption, neglecting the reverse dynamic—how research shapes policy. This paper fills this gap by analyzing how EV research influences policy using a methodological framework. A dataset of 44,246 Scopus articles, cross-referenced with Overton database quantifies the policy impact of EV research, identifying key contributors such as influential journals (Transportation Research Part A & D, Energy Policy), authors, and countries. Our findings reveal that articles on cost comparisons, environmental metrics, and integration solutions hold significant policy influence despite low traditional citation counts. Topic modeling highlights policy resonance in studies on battery technology, emission reduction, and grid integration. This work advocates for multi-metric approaches, combining bibliometric and policy impact assessments, to advance science-policy studies and drive societal change.
{"title":"From research to roadmaps: Electric vehicle studies driving sustainable policy frameworks","authors":"Hira Tahir , Sami El-Ferik , Muhammad Tayyab","doi":"10.1016/j.trd.2025.104645","DOIUrl":"10.1016/j.trd.2025.104645","url":null,"abstract":"<div><div>Achieving sustainable development goals requires transformative approaches, with transportation offering significant decarbonization potential. While electric vehicle (EV) research has grown rapidly, early studies focused on bibliometric trends or impact of policies on EV adoption, neglecting the <em>reverse dynamic—how research shapes policy</em>. This paper fills this gap by analyzing how EV research influences policy using a methodological framework. A dataset of 44,246 Scopus articles, cross-referenced with Overton database quantifies the policy impact of EV research, identifying key contributors such as influential journals (<em>Transportation Research Part A & D, Energy Policy</em>), authors, and countries. Our findings reveal that articles on cost comparisons, environmental metrics, and integration solutions hold significant policy influence despite low traditional citation counts. Topic modeling highlights policy resonance in studies on battery technology, emission reduction, and grid integration. This work advocates for multi-metric approaches, combining bibliometric and policy impact assessments, to advance science-policy studies and drive societal change.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"140 ","pages":"Article 104645"},"PeriodicalIF":7.3,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143386999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 : 2025-02-07DOI: 10.1016/j.trd.2025.104626
Yuanyuan Wang , Ruguo Fan , Jinchai Lin , Xiao Xie , Wenjie Zhang , Dipti Srinivasan
Currently, governments and platforms are exploring subsidy schemes to encourage private charging pile sharing (PCPS), which is essential for the sustainable development of the electric vehicle industry. Nonetheless, the specific modes and their impacts on stakeholders’ decision-making remain unclear. We establish a three-level Stackelberg game model to analyze the interactions among government, platform, and private charger owners. Four practice-driven modes are proposed: both government and platform provide subsidies (BS), government provides subsidies (GS), platform provides subsidies (PS), and no subsidy (NS). Results reveal that BS works better when platform revenue increases, while GS performs better when government revenue rises; Enhancing PCPS benefits and data value promotes cost-effectiveness in BS and GS modes. Conversely, raising platform service fees hinders PCPS and reduces effectiveness; As platform revenue grows, platforms provide subsidies spontaneously, enabling the gradual withdrawal of government subsidies. These findings offer practical insights for policymakers to design targeted and efficient subsidies.
{"title":"Subsidies for shared private electric vehicle chargers: A three-level Stackelberg game analysis","authors":"Yuanyuan Wang , Ruguo Fan , Jinchai Lin , Xiao Xie , Wenjie Zhang , Dipti Srinivasan","doi":"10.1016/j.trd.2025.104626","DOIUrl":"10.1016/j.trd.2025.104626","url":null,"abstract":"<div><div>Currently, governments and platforms are exploring subsidy schemes to encourage private charging pile sharing (PCPS), which is essential for the sustainable development of the electric vehicle industry. Nonetheless, the specific modes and their impacts on stakeholders’ decision-making remain unclear. We establish a three-level Stackelberg game model to analyze the interactions among government, platform, and private charger owners. Four practice-driven modes are proposed: both government and platform provide subsidies (BS), government provides subsidies (GS), platform provides subsidies (PS), and no subsidy (NS). Results reveal that BS works better when platform revenue increases, while GS performs better when government revenue rises; Enhancing PCPS benefits and data value promotes cost-effectiveness in BS and GS modes. Conversely, raising platform service fees hinders PCPS and reduces effectiveness; As platform revenue grows, platforms provide subsidies spontaneously, enabling the gradual withdrawal of government subsidies. These findings offer practical insights for policymakers to design targeted<!--> <!-->and efficient subsidies.</div></div>","PeriodicalId":23277,"journal":{"name":"Transportation Research Part D-transport and Environment","volume":"140 ","pages":"Article 104626"},"PeriodicalIF":7.3,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}