Pub Date : 2025-12-27DOI: 10.1016/j.tranpol.2025.103981
Amin Moeinaddini , Meeghat Habibian
To evaluate the impacts of Transportation Demand Management (TDM) policies on traffic congestion and air pollution, citizens' travel behavior should be investigated accurately. The Choice Experiment (CE) approach could be adopted to investigate the behavior of citizens who may be affected by TDM policies. However, respondents might not be sure about their choices, and this uncertainty can be intensified when CEs are used to assess combinations of TDM policies. The choice uncertainty is a degree (or index) that indicates how uncertain a respondent is about their choice, which could result in inaccuracy in predicting transportation behavior. This study focuses on the mode choice uncertainty when there are three TDM policies, including transit development, cordon, and parking pricing, in an analysis of CEs. In this regard, using a face-to-face survey, the car commuters who traveled to a region in the central part of Tehran, Iran, at peak hours for work purposes were questioned about the reduction of car usage as well as the level of certainty about their decision. Afterward, using a hybrid choice model, respondents' choices and their certainty are addressed by considering panel correlations. According to the results, choice certainty depends on the cordon entrance fee, the number of urban trips per day, the value of the cars owned by the individual's household, age, and gender. The results also indicated that increasing the cordon entrance fee and parking cost reduce the choice certainty.
{"title":"Accounting for the uncertainty in an analysis of travel choice experiments using a hybrid choice model","authors":"Amin Moeinaddini , Meeghat Habibian","doi":"10.1016/j.tranpol.2025.103981","DOIUrl":"10.1016/j.tranpol.2025.103981","url":null,"abstract":"<div><div>To evaluate the impacts of Transportation Demand Management (TDM) policies on traffic congestion and air pollution, citizens' travel behavior should be investigated accurately. The Choice Experiment (CE) approach could be adopted to investigate the behavior of citizens who may be affected by TDM policies. However, respondents might not be sure about their choices, and this uncertainty can be intensified when CEs are used to assess combinations of TDM policies. The choice uncertainty is a degree (or index) that indicates how uncertain a respondent is about their choice, which could result in inaccuracy in predicting transportation behavior. This study focuses on the mode choice uncertainty when there are three TDM policies, including transit development, cordon, and parking pricing, in an analysis of CEs. In this regard, using a face-to-face survey, the car commuters who traveled to a region in the central part of Tehran, Iran, at peak hours for work purposes were questioned about the reduction of car usage as well as the level of certainty about their decision. Afterward, using a hybrid choice model, respondents' choices and their certainty are addressed by considering panel correlations. According to the results, choice certainty depends on the cordon entrance fee, the number of urban trips per day, the value of the cars owned by the individual's household, age, and gender. The results also indicated that increasing the cordon entrance fee and parking cost reduce the choice certainty.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"179 ","pages":"Article 103981"},"PeriodicalIF":6.3,"publicationDate":"2025-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145877089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Interprovincial border regions have long been constrained by administrative boundaries, giving rise to “administrative regional economies” in which local protectionism plays a central role. This study examines whether improvements in transport infrastructure enhance county-level economic centrality by mitigating these administrative barriers. Using panel data for 587 interprovincial border counties from 2000 to 2021, we construct an index of county centrality to capture factor agglomeration capacity and estimate multi-period difference-in-differences models, complemented by instrumental-variable and robustness checks. The results show that: (1) on average, highway openings are associated with a decline in border-county centrality. (2) Transportation integration raises centrality in more open eastern border counties, especially those within roughly 150–200 km of core cities, while effects are muted or negative in western regions and in more remote eastern counties. (3) Mechanism tests show that highway openings are followed by increases in the local SOE share and reduced non-SOE entry where centrality does not improve, consistent with reinforced administrative barriers that impede factor mobility and diminish regional centrality. We hence theoretically capture and provide robust empirical evidence for an “institutional transport paradox”: under specific institutional conditions, reductions in transport costs can become a catalyst for market segmentation rather than an unambiguous force for integration. The findings highlight that dismantling administrative barriers is a precondition for transport-enabled regional coordination and provide guidance for the differentiated design of cross-provincial transport and reform policies.
{"title":"The impact of transport network improvements in inter-provincial border counties on county centrality under local protectionism: Breaking barriers or reinforcing the siphon effect?","authors":"Xuechen Meng , Qinyin Meng , Xiaoying Zhou , Xiaoshu Xu","doi":"10.1016/j.tranpol.2025.103980","DOIUrl":"10.1016/j.tranpol.2025.103980","url":null,"abstract":"<div><div>Interprovincial border regions have long been constrained by administrative boundaries, giving rise to “administrative regional economies” in which local protectionism plays a central role. This study examines whether improvements in transport infrastructure enhance county-level economic centrality by mitigating these administrative barriers. Using panel data for 587 interprovincial border counties from 2000 to 2021, we construct an index of county centrality to capture factor agglomeration capacity and estimate multi-period difference-in-differences models, complemented by instrumental-variable and robustness checks. The results show that: (1) on average, highway openings are associated with a decline in border-county centrality. (2) Transportation integration raises centrality in more open eastern border counties, especially those within roughly 150–200 km of core cities, while effects are muted or negative in western regions and in more remote eastern counties. (3) Mechanism tests show that highway openings are followed by increases in the local SOE share and reduced non-SOE entry where centrality does not improve, consistent with reinforced administrative barriers that impede factor mobility and diminish regional centrality. We hence theoretically capture and provide robust empirical evidence for an “institutional transport paradox”: under specific institutional conditions, reductions in transport costs can become a catalyst for market segmentation rather than an unambiguous force for integration. The findings highlight that dismantling administrative barriers is a precondition for transport-enabled regional coordination and provide guidance for the differentiated design of cross-provincial transport and reform policies.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"178 ","pages":"Article 103980"},"PeriodicalIF":6.3,"publicationDate":"2025-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145885301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-12-25DOI: 10.1016/j.tranpol.2025.103978
Jing Liu , Wei Gao , Xuewen Zhang , Jie Zhang
Rapid expansion of electric vehicles has made charging demand highly variable in space and time, yet its coupled drivers are poorly understood. We develop a three-stage embedded hybrid method to close this gap. Sixteen spatial, facility, pricing, and weather variables are first identified. Their causal weights are quantified through a Pearson correlation–transfer entropy–DEMATEL sequence. Finally, the weighted relations are embedded in a complex-network framework to perform node-failure, centrality, edge-weight sensitivity, and threshold-based dynamic-pricing simulations. A Shenzhen charger dataset validates the model. Results reveal that charging demand is jointly governed by spatial layout, economic regulation, and environmental conditions. Traffic adjacency, charger count, and occupancy dominate demand, whereas real-time price and inter-station distance, despite weak causality, hold the highest centrality and sensitivity. Dynamic pricing cuts peaks by ∼20 % in stable periods but fails under extreme shocks. We recommend mixed stations and coordinated pricing, demand-response, and storage strategies to enhance network resilience.
{"title":"Identification and dynamic simulation of electric-vehicle charging demand drivers: a high-order hybrid method","authors":"Jing Liu , Wei Gao , Xuewen Zhang , Jie Zhang","doi":"10.1016/j.tranpol.2025.103978","DOIUrl":"10.1016/j.tranpol.2025.103978","url":null,"abstract":"<div><div>Rapid expansion of electric vehicles has made charging demand highly variable in space and time, yet its coupled drivers are poorly understood. We develop a three-stage embedded hybrid method to close this gap. Sixteen spatial, facility, pricing, and weather variables are first identified. Their causal weights are quantified through a Pearson correlation–transfer entropy–DEMATEL sequence. Finally, the weighted relations are embedded in a complex-network framework to perform node-failure, centrality, edge-weight sensitivity, and threshold-based dynamic-pricing simulations. A Shenzhen charger dataset validates the model. Results reveal that charging demand is jointly governed by spatial layout, economic regulation, and environmental conditions. Traffic adjacency, charger count, and occupancy dominate demand, whereas real-time price and inter-station distance, despite weak causality, hold the highest centrality and sensitivity. Dynamic pricing cuts peaks by ∼20 % in stable periods but fails under extreme shocks. We recommend mixed stations and coordinated pricing, demand-response, and storage strategies to enhance network resilience.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"178 ","pages":"Article 103978"},"PeriodicalIF":6.3,"publicationDate":"2025-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145841563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-12-25DOI: 10.1016/j.tranpol.2025.103974
Wilson McNeil , Rafaella Canessa , Corinne D. Scown , Jannik Haas , Rebecca Peer
Trucking is critical for New Zealand's economy as it is responsible for most of the country's freight movement. However, the reliance on diesel-powered trucks disproportionately contributes to carbon dioxide (CO2) and air pollutant emissions. Two different technologies have the potential to electrify heavy freight: battery-electric and fuel cell electric trucks; however, it remains unclear which technology will be used to reach New Zealand's goal of net-zero freight transportation emissions by 2050. In this study, we develop an integrated assessment framework that quantifies present-day heavy truck emissions in New Zealand and compares the energy requirement of decarbonization through battery-electric versus fuel cell trucks in 2035 and 2050. This framework includes freight demand, vehicle powertrain, truck operation and charging, and diesel emission models. Further, we quantify the electricity grid infrastructure requirements of the shift to battery-electric and fuel cell truck fleets using the REMix-NZ capacity expansion model. Results show that the current fleet of heavy diesel trucks in New Zealand emits 2.4 million tonnes of CO2 eq. annually, which could be fully mitigated by 2050 through battery-electric or fuel cell fleets. A full fleet of battery-electric trucks in 2050 would consume 7.2 % of New Zealand's current electricity generation compared to 13.5 % for fuel cell trucks. A sensitivity analysis shows that improved truck design and efficiency can reduce this electricity requirement. Up to 3.6 GW additional capacity would need to be built by 2050, primarily through solar power, to satisfy the energy demand of a battery-electric truck fleet compared to 5.3 GW for a fuel cell fleet.
{"title":"Toward lower-emission freight: Grid infrastructure tradeoffs of battery-electric vs fuel cell trucks in New Zealand","authors":"Wilson McNeil , Rafaella Canessa , Corinne D. Scown , Jannik Haas , Rebecca Peer","doi":"10.1016/j.tranpol.2025.103974","DOIUrl":"10.1016/j.tranpol.2025.103974","url":null,"abstract":"<div><div>Trucking is critical for New Zealand's economy as it is responsible for most of the country's freight movement. However, the reliance on diesel-powered trucks disproportionately contributes to carbon dioxide (CO<sub>2</sub>) and air pollutant emissions. Two different technologies have the potential to electrify heavy freight: battery-electric and fuel cell electric trucks; however, it remains unclear which technology will be used to reach New Zealand's goal of net-zero freight transportation emissions by 2050. In this study, we develop an integrated assessment framework that quantifies present-day heavy truck emissions in New Zealand and compares the energy requirement of decarbonization through battery-electric versus fuel cell trucks in 2035 and 2050. This framework includes freight demand, vehicle powertrain, truck operation and charging, and diesel emission models. Further, we quantify the electricity grid infrastructure requirements of the shift to battery-electric and fuel cell truck fleets using the REMix-NZ capacity expansion model. Results show that the current fleet of heavy diesel trucks in New Zealand emits 2.4 million tonnes of CO<sub>2</sub> eq. annually, which could be fully mitigated by 2050 through battery-electric or fuel cell fleets. A full fleet of battery-electric trucks in 2050 would consume 7.2 % of New Zealand's current electricity generation compared to 13.5 % for fuel cell trucks. A sensitivity analysis shows that improved truck design and efficiency can reduce this electricity requirement. Up to 3.6 GW additional capacity would need to be built by 2050, primarily through solar power, to satisfy the energy demand of a battery-electric truck fleet compared to 5.3 GW for a fuel cell fleet.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"179 ","pages":"Article 103974"},"PeriodicalIF":6.3,"publicationDate":"2025-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-12-24DOI: 10.1016/j.tranpol.2025.103977
Bo Lu, Guixian Zhang, Yonggang Li
Artificial intelligence (AI) technology is the key support for the intelligent transformation of ports. This study examines optimal AI technology deployment strategies for heterogeneous ports operating within co-opetition networks. We consider the ecological synergy characteristics, deployment effect uncertainty and port heterogeneity, construct a dual-market game-theoretic model to analyze the strategic choice between independent R&D and outsourcing. The results reveal that deployment decisions of port are shaped not only by cost-benefit considerations but also by the interplay of co-opetition structures, technological ecosystems, and AI technology risks. A cooperation paradox is identified, expansion of the cooperative market may reduce AI technology level when both ports pursue independent R&D, particularly under the expected effect of deployment is low. This outcome that underscores the technology investment motivational barriers in loosely coupled alliances. Conversely, when ports form a unified technology ecosystem, cooperative market growth positively correlates with the AI technology deployment level, driven by ecological synergy effects. If one port opts for independent R&D while the other outsources third-party AI technology, competitive advantage hinges on whether the former's AI deployment effect exceeds a critical threshold. The study delineates a multidimensional strategic space defined by cooperative market scale, competition intensity, AI technology deployment effect uncertainties and R&D costs, provide theoretical support for ports in choosing AI technology deployment strategy.
{"title":"AI deployment for heterogeneous ports: Strategic choices between independent R&D and outsourcing","authors":"Bo Lu, Guixian Zhang, Yonggang Li","doi":"10.1016/j.tranpol.2025.103977","DOIUrl":"10.1016/j.tranpol.2025.103977","url":null,"abstract":"<div><div>Artificial intelligence (AI) technology is the key support for the intelligent transformation of ports. This study examines optimal AI technology deployment strategies for heterogeneous ports operating within co-opetition networks. We consider the ecological synergy characteristics, deployment effect uncertainty and port heterogeneity, construct a dual-market game-theoretic model to analyze the strategic choice between independent R&D and outsourcing. The results reveal that deployment decisions of port are shaped not only by cost-benefit considerations but also by the interplay of co-opetition structures, technological ecosystems, and AI technology risks. A cooperation paradox is identified, expansion of the cooperative market may reduce AI technology level when both ports pursue independent R&D, particularly under the expected effect of deployment is low. This outcome that underscores the technology investment motivational barriers in loosely coupled alliances. Conversely, when ports form a unified technology ecosystem, cooperative market growth positively correlates with the AI technology deployment level, driven by ecological synergy effects. If one port opts for independent R&D while the other outsources third-party AI technology, competitive advantage hinges on whether the former's AI deployment effect exceeds a critical threshold. The study delineates a multidimensional strategic space defined by cooperative market scale, competition intensity, AI technology deployment effect uncertainties and R&D costs, provide theoretical support for ports in choosing AI technology deployment strategy.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"178 ","pages":"Article 103977"},"PeriodicalIF":6.3,"publicationDate":"2025-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145885305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-12-24DOI: 10.1016/j.tranpol.2025.103976
Xiaolei Zhao , Xuemei Li , Lingrun Yang
China's electric vehicle (EV) policies, designed to address the energy crisis and improve urban air quality, exhibit significant policy-mix complexity (PC). This study examines the effect of PC on carbon emissions using panel data from 280 cities in China. Findings reveal a U-shaped relationship between PC and carbon emissions, with moderately complex policies most effective in reducing emissions. This causal U-shaped relationship is robustly identified using a two-stage least squares (2SLS) strategy with institutional and political instruments. Mechanism analysis reveals that this U-shape is driven by an underlying inverted U-shaped relationship between PC and key pathways: market uptake, infrastructure investment and technological innovation. Among PC dimensions, the number of policy instruments (PIs) and policy scope (PS) significantly reduce emissions, while policy types (PTs) and departments involved (DI) show no significant impact. Heterogeneity analysis indicates the U-shaped relationship holds in less developed areas and during 2003–2011. PIs are most effective in developed regions, while PS excels in the 2003–2011 period. This study improves theoretical insights in PC and provides practical guidance for designing EV policies to mitigate carbon emissions.
{"title":"Policy-mix complexity and carbon emissions: evidence from China's EV industry","authors":"Xiaolei Zhao , Xuemei Li , Lingrun Yang","doi":"10.1016/j.tranpol.2025.103976","DOIUrl":"10.1016/j.tranpol.2025.103976","url":null,"abstract":"<div><div>China's electric vehicle (EV) policies, designed to address the energy crisis and improve urban air quality, exhibit significant policy-mix complexity (PC). This study examines the effect of PC on carbon emissions using panel data from 280 cities in China. Findings reveal a U-shaped relationship between PC and carbon emissions, with moderately complex policies most effective in reducing emissions. This causal U-shaped relationship is robustly identified using a two-stage least squares (2SLS) strategy with institutional and political instruments. Mechanism analysis reveals that this U-shape is driven by an underlying inverted U-shaped relationship between PC and key pathways: market uptake, infrastructure investment and technological innovation. Among PC dimensions, the number of policy instruments (PIs) and policy scope (PS) significantly reduce emissions, while policy types (PTs) and departments involved (DI) show no significant impact. Heterogeneity analysis indicates the U-shaped relationship holds in less developed areas and during 2003–2011. PIs are most effective in developed regions, while PS excels in the 2003–2011 period. This study improves theoretical insights in PC and provides practical guidance for designing EV policies to mitigate carbon emissions.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"178 ","pages":"Article 103976"},"PeriodicalIF":6.3,"publicationDate":"2025-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145841565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-12-23DOI: 10.1016/j.tranpol.2025.103967
Xiaowen Sha , Miao Su
This study employs an explainable machine learning framework to examine the key factors associated with environmental, social, and governance (ESG) performance in China's transportation and logistics industry. Using panel data of 1912 firm-year observations from A-share listed companies (2009–2023), the CatBoost model is combined with SHapley Additive exPlanations (SHAP) for accurate and interpretable predictions. Among 11 mainstream ML algorithms, CatBoost achieves the lowest mean absolute error. Results show that management expense ratio, executive compensation, fixed asset ratio, and capital intensity positively correlated with ESG performance, while firm size, independent director ratio, and ownership concentration of top ten shareholders have negatively associated with it. SHAP reveals nonlinear relationships and complex interactions. Heterogeneity tests indicate notable differences between state-owned and private enterprises and between regulated and non-regulated industries. These findings provide evidence and guidance for stakeholders, supporting targeted ESG strategies and demonstrating the value of explainable AI in promoting sustainable development.
{"title":"Ownership, regulation, and ESG in transport and logistics: Insights for policy from explainable machine learning","authors":"Xiaowen Sha , Miao Su","doi":"10.1016/j.tranpol.2025.103967","DOIUrl":"10.1016/j.tranpol.2025.103967","url":null,"abstract":"<div><div>This study employs an explainable machine learning framework to examine the key factors associated with environmental, social, and governance (ESG) performance in China's transportation and logistics industry. Using panel data of 1912 firm-year observations from A-share listed companies (2009–2023), the CatBoost model is combined with SHapley Additive exPlanations (SHAP) for accurate and interpretable predictions. Among 11 mainstream ML algorithms, CatBoost achieves the lowest mean absolute error. Results show that management expense ratio, executive compensation, fixed asset ratio, and capital intensity positively correlated with ESG performance, while firm size, independent director ratio, and ownership concentration of top ten shareholders have negatively associated with it. SHAP reveals nonlinear relationships and complex interactions. Heterogeneity tests indicate notable differences between state-owned and private enterprises and between regulated and non-regulated industries. These findings provide evidence and guidance for stakeholders, supporting targeted ESG strategies and demonstrating the value of explainable AI in promoting sustainable development.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"178 ","pages":"Article 103967"},"PeriodicalIF":6.3,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145841564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-12-22DOI: 10.1016/j.tranpol.2025.103970
Terence Dimatulac, Hanna Maoh, Rupp Carriveau
As Canada advances toward its target of zero-emission heavy commercial vehicle sales by 2040, the success of long-haul electric vehicle (LHEV) adoption will depend on the availability of well-placed, high-capacity public charging infrastructure. This study evaluates how two critical real-world constraints, namely daily utilization time and site space capacity, affect the optimal design of Ontario's future on-route charging network by simulating a total of 63 scenarios. The results show that modest utilization thresholds (e.g., 8 h per day) can reduce the number of required stations by up to 20 % with minimal impact on service coverage. In contrast, restricted space capacity leads to steep declines in the number of supported trips unless more locations are added. When both constraints are applied together, their impacts are largely additive, increasing the need for infrastructure expansion while shifting grid demand across space and time. The study highlights the need to align transportation and electricity infrastructure planning, prioritize high-demand freight corridors, and support regulatory frameworks that promote efficient, high-utilization, and grid-resilient charging solutions.
{"title":"Electricity demand assessment and charging infrastructure planning for long-haul electric vehicle operations in Ontario, Canada","authors":"Terence Dimatulac, Hanna Maoh, Rupp Carriveau","doi":"10.1016/j.tranpol.2025.103970","DOIUrl":"10.1016/j.tranpol.2025.103970","url":null,"abstract":"<div><div>As Canada advances toward its target of zero-emission heavy commercial vehicle sales by 2040, the success of long-haul electric vehicle (LHEV) adoption will depend on the availability of well-placed, high-capacity public charging infrastructure. This study evaluates how two critical real-world constraints, namely daily utilization time and site space capacity, affect the optimal design of Ontario's future on-route charging network by simulating a total of 63 scenarios. The results show that modest utilization thresholds (e.g., 8 h per day) can reduce the number of required stations by up to 20 % with minimal impact on service coverage. In contrast, restricted space capacity leads to steep declines in the number of supported trips unless more locations are added. When both constraints are applied together, their impacts are largely additive, increasing the need for infrastructure expansion while shifting grid demand across space and time. The study highlights the need to align transportation and electricity infrastructure planning, prioritize high-demand freight corridors, and support regulatory frameworks that promote efficient, high-utilization, and grid-resilient charging solutions.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"178 ","pages":"Article 103970"},"PeriodicalIF":6.3,"publicationDate":"2025-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145841560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-12-22DOI: 10.1016/j.tranpol.2025.103969
Wookjae Yang, Byunguk Kang
Vehicle speed limit reduction policies have been widely studied for their impact on traffic safety outcomes, such as reducing crash frequency and severity. However, little attention has been paid to the effects on air quality that may have resulted from traffic volume changes induced by speed reductions. This study aims to assess the causal impact of the speed limit reduction policy in the Republic of Korea, “5030 Speed Limit Reduction"- urban roads from 60 to 80 km/h to 50–60 km/h and on local roads from 40 to 60 km/h to 30 km/h, on air quality, explicitly targeting particulate matter (PM10), carbon monoxide (CO), carbon dioxide (CO2), nitrogen oxides (NOx), and volatile organic compounds (VOCs). By employing a quasi-experimental study design that combines propensity score matching (PSM) and spatial difference-in-differences (SDID) regression, this research addresses gaps in existing studies by investigating the causal impact of speed limit reductions on air quality and spatial dependence, while controlling for confounding variables, such as built environment and socioeconomic status. The PSM result indicates that after matching, the mean differences between the treatment and control groups were substantially reduced, indicating that matching effectively balanced covariates. The results of three different difference-in-difference models (linear regression DID, spatial error DID, and spatial lag DID) were applied to five air pollutants: CO2, CO, NOx, VOCs, and PM10. The treatment effect is positive and statistically significant across all pollutants, except NOx. This confirms that the speed limit reduction policy increased traffic volume and, consequently, increased emissions, thereby worsening air quality. Although the policy successfully contributes to the United Nations' Sustainable Development Goals (SDGs) by significantly reducing crashes and enhancing road safety, it falls short of achieving another key aspect of sustainability, improving air quality. Therefore, comprehensive strategies are required to achieve sustainable urban environments.
{"title":"Slower roads, cleaner skies? causal effects of speed limit reduction on urban air quality using propensity score matching and spatial difference-in-differences regression","authors":"Wookjae Yang, Byunguk Kang","doi":"10.1016/j.tranpol.2025.103969","DOIUrl":"10.1016/j.tranpol.2025.103969","url":null,"abstract":"<div><div>Vehicle speed limit reduction policies have been widely studied for their impact on traffic safety outcomes, such as reducing crash frequency and severity. However, little attention has been paid to the effects on air quality that may have resulted from traffic volume changes induced by speed reductions. This study aims to assess the causal impact of the speed limit reduction policy in the Republic of Korea, “5030 Speed Limit Reduction\"- urban roads from 60 to 80 km/h to 50–60 km/h and on local roads from 40 to 60 km/h to 30 km/h, on air quality, explicitly targeting particulate matter (PM<sub>10</sub>), carbon monoxide (CO), carbon dioxide (CO<sub>2</sub>), nitrogen oxides (NO<sub>x</sub>), and volatile organic compounds (VOCs). By employing a quasi-experimental study design that combines propensity score matching (PSM) and spatial difference-in-differences (SDID) regression, this research addresses gaps in existing studies by investigating the causal impact of speed limit reductions on air quality and spatial dependence, while controlling for confounding variables, such as built environment and socioeconomic status. The PSM result indicates that after matching, the mean differences between the treatment and control groups were substantially reduced, indicating that matching effectively balanced covariates. The results of three different difference-in-difference models (linear regression DID, spatial error DID, and spatial lag DID) were applied to five air pollutants: CO<sub>2</sub>, CO, NO<sub>x</sub>, VOCs, and PM<sub>10</sub>. The treatment effect is positive and statistically significant across all pollutants, except NO<sub>x</sub>. This confirms that the speed limit reduction policy increased traffic volume and, consequently, increased emissions, thereby worsening air quality. Although the policy successfully contributes to the United Nations' Sustainable Development Goals (SDGs) by significantly reducing crashes and enhancing road safety, it falls short of achieving another key aspect of sustainability, improving air quality. Therefore, comprehensive strategies are required to achieve sustainable urban environments.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"178 ","pages":"Article 103969"},"PeriodicalIF":6.3,"publicationDate":"2025-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145885257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2025-12-22DOI: 10.1016/j.tranpol.2025.103971
Benedetto Barabino, Roberto Ventura
Fare evasion is a pressing issue in public transport networks, impacting the financial sustainability of Transit Agencies (TAs) and Public Transport Companies (PTCs). While prior studies have largely focused on the probability of fare evasion (or frequency), research on severity— e.g., the financial and operational impact of detected fare evasion cases—remains limited. This study addresses this gap by specifying, calibrating, and validating two prediction models for fare evasion severity using real-world survey data on passengers from a mid-sized Italian PTC. Two approaches are employed: an Econometric Approach (EA) that uses Logistic Regression Models (LRMs) and a Machine Learning Approach (MLA) leveraging an Artificial Neural Network Model (ANNM). Model performance is evaluated and compared using Confusion Matrices, Metrics robust to class imbalance (e.g., Area Under the Precision-Recall Curve, Balanced Accuracy), and Probability Calibration tools (e.g., reliability curves, Brier score). Probability thresholds (cut-offs) are enhanced to improve predictive performance under imbalanced conditions. Finally, each predictor effect is assessed for both models. Results indicate that the ANNM slightly outperforms the LRM in this case study, demonstrating higher predictive accuracy and a stronger ability to detect high-severity fare evasion cases. However, this gain entails a minor rise in false positives, reflecting the trade-off between predictive accuracy and calibration stability. The LRM remains valuable for policy analysis, offering consistent and interpretable probability estimates to help TAs/PTCs understand key factors influencing fare evasion severity. These findings provide critical insights for enhancing fare inspection policies and enforcement resource allocation.
{"title":"Comparing fare evasion severity by econometric and artificial intelligence models: An Italian case study","authors":"Benedetto Barabino, Roberto Ventura","doi":"10.1016/j.tranpol.2025.103971","DOIUrl":"10.1016/j.tranpol.2025.103971","url":null,"abstract":"<div><div>Fare evasion is a pressing issue in public transport networks, impacting the financial sustainability of Transit Agencies (TAs) and Public Transport Companies (PTCs). While prior studies have largely focused on the probability of fare evasion (or frequency), research on severity— e.g., the financial and operational impact of detected fare evasion cases—remains limited. This study addresses this gap by specifying, calibrating, and validating two prediction models for fare evasion severity using real-world survey data on passengers from a mid-sized Italian PTC. Two approaches are employed: an Econometric Approach (EA) that uses Logistic Regression Models (LRMs) and a Machine Learning Approach (MLA) leveraging an Artificial Neural Network Model (ANNM). Model performance is evaluated and compared using Confusion Matrices, Metrics robust to class imbalance (e.g., Area Under the Precision-Recall Curve, Balanced Accuracy), and Probability Calibration tools (e.g., reliability curves, Brier score). Probability thresholds (cut-offs) are enhanced to improve predictive performance under imbalanced conditions. Finally, each predictor effect is assessed for both models. Results indicate that the ANNM slightly outperforms the LRM in this case study, demonstrating higher predictive accuracy and a stronger ability to detect high-severity fare evasion cases. However, this gain entails a minor rise in false positives, reflecting the trade-off between predictive accuracy and calibration stability. The LRM remains valuable for policy analysis, offering consistent and interpretable probability estimates to help TAs/PTCs understand key factors influencing fare evasion severity. These findings provide critical insights for enhancing fare inspection policies and enforcement resource allocation.</div></div>","PeriodicalId":48378,"journal":{"name":"Transport Policy","volume":"178 ","pages":"Article 103971"},"PeriodicalIF":6.3,"publicationDate":"2025-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145841562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}