International Journal of Sustainable Transportation最新文献

{"title":"Optimal planning of urban air mobility systems accounting for ground access trips","authors":"Heeseung Shon ,&nbsp;Sanggyu Kim ,&nbsp;Jinwoo Lee","doi":"10.1080/15568318.2024.2311125","DOIUrl":"10.1080/15568318.2024.2311125","url":null,"abstract":"<div><p>The concept of Urban Air Mobility (UAM), an on-demand aviation service using air vehicles for urban short-distance trips, such as electric vertical takeoff and landing aircraft (eVTOL), has recently drawn public attention as one of possible solutions to traffic congestion in metropolitan areas. We present an optimal planning framework for fleet size and vertiport numbers using generalized cost models of UAM trip chains with two different ground access modes for first and last mile trips, including taxis and robotaxis (i.e. autonomous taxis or shared autonomous vehicles). As it is a relatively new and untested mode of transportation, our research aims to provide a decision-making tool for initial UAM system planning and analysis of its economic feasibility, appropriately considering its unique characteristics, such as high free-flow speed, low circuity, needs for ground access, and specific cost factors, such as vertiport and electric vertical takeoff and landing aircraft costs. Through a parametric study, we quantitatively examine the necessary conditions for UAM, with or without ridesharing, to become more economically viable than other ground-only modes. The study confirms that UAM can have potential economic benefits especially in large cities with longer average trip lengths and severe traffic congestion, where the average ground vehicle speed is low.</p></div>","PeriodicalId":47824,"journal":{"name":"International Journal of Sustainable Transportation","volume":"18 4","pages":"Pages 356-378"},"PeriodicalIF":3.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140083939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-resolution mapping of transport CO2 emission in Beijing–Tianjin–Hebei region: Spatial-temporal characteristics and decoupling effects","authors":"Jiayuan Cai ,&nbsp;Zilin Deng ,&nbsp;Linna Li","doi":"10.1080/15568318.2023.2299008","DOIUrl":"10.1080/15568318.2023.2299008","url":null,"abstract":"<div><p>Numerous studies estimating transport CO₂ emissions in developing countries were on the large scales and few provided high-resolution mapping of transport CO₂ emissions from different transport modes according to their respective distribution and diffusion patterns. This study proposed a hybrid method for high-resolution mapping of transport CO₂ emissions in metropolitan regions, and applied it to the Beijing–Tianjin–Hebei (BTH) region of China during 2000-2019. The results indicate that: (1) The transport CO₂ emissions in the BTH region increased rapidly, of which road transport carbon emissions accounting for approximately 80%, air transport carbon emissions accounting for nearly 20%, railway and water transport accounted for a relatively small proportion. (2) For the transport CO₂ emission structure from 2000 to 2019, road transport was still the main source, but its proportion has decreased since recent years, which air transport became the second largest source of emissions and had greater impact on Beijing and Tianjin. (3) The transport carbon emission hot spots were mainly located in Beijing and kept shrinking, while the cold spots were mainly located in the southern part of Hebei Province and kept expanding. (4) The decoupling relationship between county-level transport carbon emissions and economic growth changed from weak decoupling to expansive negative decoupling, showing a non-ideal development in the BTH region. Overall, this study revealed the spatiotemporal characteristics of transport CO₂ emissions in the BTH region, based on which specific carbon reduction strategies could be promoted to facilitate sustainable low-carbon transport development in metropolitan regions in developing countries.</p></div>","PeriodicalId":47824,"journal":{"name":"International Journal of Sustainable Transportation","volume":"18 4","pages":"Pages 301-314"},"PeriodicalIF":3.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139386414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Delivering Transit Oriented Development (TOD) in low to medium density contexts. Actor relationships and market conditions in smaller Swedish cities","authors":"Robert Hrelja ,&nbsp;Tom Rye","doi":"10.1080/15568318.2023.2285318","DOIUrl":"10.1080/15568318.2023.2285318","url":null,"abstract":"<div><p>This article analyses actor relationships in Transit Oriented Development (TOD) planning in order to better understand the preconditions necessary for planning processes to result in TOD in lower density contexts, in suburbs, or small cities. Empirically, the analysis builds on a comparative case study of TOD planning projects. The focus in the analytical work is on understanding how market conditions in lower density contexts influence the conditions for TOD planning projects, and how this feeds through to planning processes. The overall conclusion is that we should not expect that planning processes in small cities with low to medium densities of populations and activities differ much from those in more ‘classic’ highly urban TOD locations. Market conditions had an impact on planning processes, but once in the planning stage conditions for implementation depended more on the ability to handle competing interests and less on market conditions. In terms of policy recommendations, it is important for actors to develop a joint vision of the built environment of the site in question that channels organizations’ individual actions in a joint direction. The ability to achieve such a joint vision for the design of the site in question may be more important in small towns than in more ‘typical’ TOD contexts in denser urban areas. This is because all enablers need to work together in a positive way in such location – which may be marginal from a market point of view – for the development to be able to go ahead.</p></div>","PeriodicalId":47824,"journal":{"name":"International Journal of Sustainable Transportation","volume":"18 3","pages":"Pages 236-249"},"PeriodicalIF":3.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139236952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Taking steps toward healthy & sustainable transport investment: A systematic review of economic evaluations in the academic literature on large-scale active transport infrastructure","authors":"Madison Bland ,&nbsp;Matthew I. Burke ,&nbsp;Kelly Bertolaccini","doi":"10.1080/15568318.2023.2296952","DOIUrl":"10.1080/15568318.2023.2296952","url":null,"abstract":"<div><p>For cities seeking to promote active transport, overcoming the institutional practices of car-centric planning and investment is critical to redistributing funds toward dedicated walking and cycling infrastructure. Slowly, urban policy and research are expanding traditional mobility-centric economic evaluations beyond major road and rail projects. This review paper of the academic literature employs a systematic quantitative literature review (SQLR) methodology and contributes an up-to-date examination of academic economic evaluations undertaken on large-scale active transport infrastructure implementations (i.e. capital costs greater than USD$3 million as of 2022). Seventeen (17) peer-reviewed academic papers were included in the final analysis. Cost-benefit analysis (CBA), followed by cost-effective analysis (CEA) and health impact assessment (HIA), were the most common pre-implementation (<em>ex ante</em>) and post-implementation (<em>ex post</em>) assessment methods. Between implementation-types, contexts, and methodologies, the parameters factored in econometric evaluations present a large degree of variance. Despite this, all studies demonstrated the positive return on investment in large-scale active transport infrastructure, where all CBAs produced benefit-cost ratios greater than the breakeven threshold (i.e. &gt;1). Results show health parameters contribute the greatest benefit to positive evaluations, accounting for 77% of total benefits (and 67% in the CBA papers). However, evaluations inconsistently factor or omit long-term, intergenerational, and non-mobility benefits that highlight a partiality in their approach and can be co-opted to support predetermined outcomes. Further research must seek to establish if more expansive, sustainability-orientated methods are needed, or whether to adopt policy positions acknowledging the positive returns walking and cycling infrastructure deliver.</p></div>","PeriodicalId":47824,"journal":{"name":"International Journal of Sustainable Transportation","volume":"18 3","pages":"Pages 201-220"},"PeriodicalIF":3.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139451375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Perceived importance of context-specific built-environment factors of walking: A new perspective for prioritizing policy measures for promoting walking","authors":"Caroline Koszowski ,&nbsp;Rico Wittwer ,&nbsp;Stefan Hubrich ,&nbsp;Regine Gerike","doi":"10.1080/15568318.2023.2301372","DOIUrl":"10.1080/15568318.2023.2301372","url":null,"abstract":"<div><p>Walking as one type of physical activity generates benefits for personal health and contributes to sustainability in its environmental, economic, and social dimensions. Based on a cross-sectional survey for a representative sample of German cities with at least 100,000 residents, this study investigates determinants of residents’ walking behavior. Two contexts of promenading in the city for leisure walking and the trip to the supermarket for utilitarian walking are distinguished in order to investigate differences in respondents’ perceived importance of built-environment characteristics and to bridge the gap between the individual level of residents’ behavior and the streetscape level. In addition, the analyses distinguish between frequent and less frequent walkers in order to understand differences in characteristics, behavior, preferences, and perceptions between these two groups. The results of this study with a sample of <em>n</em> = 4,637 respondents show that the relevance of the built environment is higher for leisure walking than for utilitarian walking and higher for frequent walkers compared to less frequent walkers. For leisure walking, “protection”-variables are ranked high (e.g. safety, security), followed by “comfort” (e.g. space, surface quality) and by “delight” (e.g. attractive buildings, greenery). Distance is key for utilitarian walking. Significant differences between frequent and less frequent walkers are identified mainly for the “Delight”-variables, this is attractive buildings and greenery for utilitarian walking, and space availability and street furniture for leisure walking. These differences should be considered in future research and street design practice which might preferably focus on the most demanding person group of frequent walkers.</p></div>","PeriodicalId":47824,"journal":{"name":"International Journal of Sustainable Transportation","volume":"18 3","pages":"Pages 275-290"},"PeriodicalIF":3.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139525111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toward equitable public transportation with pets: Accessing veterinary care under mobility constraints in Hong Kong through taxi fare analysis","authors":"Ka Yiu Ng ,&nbsp;Keumseok Koh","doi":"10.1080/15568318.2023.2295858","DOIUrl":"10.1080/15568318.2023.2295858","url":null,"abstract":"<div><p>Equitable access to diverse opportunities for everyone is essential to public transportation. While the mobility for veterinary care visit is pivotal to One Health, pets and their owners often face various barriers in transportation. Despite Hong Kong’s well-received transit-oriented development, pets are strictly prohibited in the major modes of public transport, which is rarely discussed in the literature regarding equitable transportation planning. Therefore, this study examined the variation in Taxi fares to access four different types of veterinary services (<em>general</em>, <em>24/7</em>, <em>low-cost</em>, and <em>24/7 low-cost</em>) in Hong Kong using network routing and Geographic Information System. We found that most inaccessible communities to veterinary care mainly include remote rural villages. Moreover, a higher neighborhood household income was associated with a lower Taxi fare to the nearest 24/7 low-cost service in the new growth and rural areas. We further explored several policy recommendations, such as allowing pets on public transport, mobile services, and pet ambulance. Although the effect of travel costs on veterinarian-seeking behavior is inconclusive, this study showcases a novel and holistic examination of transportation barriers to veterinary care through the geographical and financial lens.</p></div>","PeriodicalId":47824,"journal":{"name":"International Journal of Sustainable Transportation","volume":"18 3","pages":"Pages 264-274"},"PeriodicalIF":3.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139159340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating the impacts of E-scooters on a bike-sharing system in Tucson, Arizona with a no ride zone","authors":"Adrian Cottam ,&nbsp;Xiaofeng Li ,&nbsp;Mohammad Razaur Rahman Shaon ,&nbsp;Yao-Jan Wu","doi":"10.1080/15568318.2023.2288122","DOIUrl":"10.1080/15568318.2023.2288122","url":null,"abstract":"<div><p>E-scooters have exploded in popularity across the United States in recent years. Understanding the effects of shared micromobility on society, as well as understanding how one shared micromobility mode can affect other travel modes is valuable for decision making and evaluation. In this study, the effects of introducing E-scooters on a preexisting bike-sharing system were evaluated using real-world data. A no-ride zone policy for E-scooters around the University of Arizona (UA) effectively created policy-based control and treatment groups to observe the effect of E-scooters on the bike-sharing system. A difference-in-differences regression model was used to estimate the change in the number of bike-sharing trips after the E-scooters were introduced for nonmembers and members, finding that after the introduction of E-scooters, member bike-sharing system trips were decreased by 1.5 trips per station per day in the area where E-scooters were introduced. Furthermore, a temporal and spatial analysis was conducted to evaluate the behavioral change exhibited by bike-sharing users after the introduction of E-scooters. E-scooter data was used to compare the similarity between bike-sharing and E-scooter usage patterns, indicating that E-scooters reduced the number of spontaneous trips taken by bike-sharing users. The number of nonmember bike-sharing trips decreased for all locations, indicating that E-scooters became the more popular option for leisure activities. Furthermore, member bike-sharing system users were found to travel less on weekends than nonmembers.</p></div>","PeriodicalId":47824,"journal":{"name":"International Journal of Sustainable Transportation","volume":"18 3","pages":"Pages 250-263"},"PeriodicalIF":3.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138585897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Patterns of car dependency of metropolitan areas worldwide: Learning from the outliers","authors":"Pedram Saeidizand ,&nbsp;Kobe Boussauw","doi":"10.1080/15568318.2023.2283462","DOIUrl":"10.1080/15568318.2023.2283462","url":null,"abstract":"<div><p>Despite the development of alternative modes of urban transport, the private car is still the most popular transport option in many regions around the world. Various spatial and socio-economic characteristics of metropolitan areas (MAs) seem to be generally correlated with levels of car use, and thus with car dependency. In this research, we study car dependency in a subgroup of global MAs, that are characterized profiles of car dependency, and are therefore considered outliers. Drawing on data that are available from the Mobility in Cities Database (MCD), we consider 56 MAs and use Mahalanobis distance to identify 7 outlier MAs that are either more, or less car dependent than anticipated by the regression model. We investigate the driving forces behind unpredicted levels of car use and position the outlier MAs in a catalogue of mobility profiles. A combination of urban form, convenience of car use, availability of alternative modes to car and car ownership characteristics were found to contribute to the level of car dependency in these MAs.</p></div>","PeriodicalId":47824,"journal":{"name":"International Journal of Sustainable Transportation","volume":"18 3","pages":"Pages 221-235"},"PeriodicalIF":3.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138604857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impact of covid-19 pandemic on trail usage: Application of a ten-year trail counting methodology","authors":"Michelle Renee Oswald Beiler","doi":"10.1080/15568318.2023.2251918","DOIUrl":"10.1080/15568318.2023.2251918","url":null,"abstract":"<div><p>The COVID-19 pandemic has impacted non-motorized mobility in the U.S. since March 2020. Many trail facilities have served as a venue for both recreational and commuting options for pedestrians and bicyclists. With social distancing, as well as the promotion of physical health and wellness during the pandemic, trail facilities serve as alternatives for travel for pedestrians and cyclists. Since 2011, Phase 1 of the Buffalo Valley Rail Trail has been open to users as a pedestrian and cycling connection in central Pennsylvania. In 2015, Phase 2 was developed in order to provide direct connection into downtown Lewisburg. This study evaluates trail usage at four counters over a period of 10 years using a six-step process. The results show that the 2 years with the highest trips over the entire 10-year period were in 2020 and 2021 (the 2 years during the COVID-19 pandemic). In addition, the highest recorded daily count for one of the counters over the entire 10-year period occurred on one of the days during the week of Pennsylvania’s stay-at-home order period (in March 2020). By developing and implementing the six-step method on the BVRT, this study serves as a foundation for exploring trail demand on facilities throughout the United States and applications with regard to evaluating pandemic impacts.</p></div>","PeriodicalId":47824,"journal":{"name":"International Journal of Sustainable Transportation","volume":"18 2","pages":"Pages 134-145"},"PeriodicalIF":3.9,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42260168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The contrasted evolution of cycling during youth. Determinants of bicycle ownership and use","authors":"Aurélie Schmassmann ,&nbsp;Daniel Baehler ,&nbsp;Patrick Rérat","doi":"10.1080/15568318.2023.2223139","DOIUrl":"10.1080/15568318.2023.2223139","url":null,"abstract":"<div><p>Cycling during youth is characterized in many countries by two trends: its decline over the course of several decades (termed the generation effect) and its decline over the life course of individuals (the age effect). This paper addresses the age effect through a survey carried out among young people aged 12–20 (<em>n</em> = 1,358) in a Swiss city. It goes beyond the cyclist/non-cyclist dichotomy and identifies several cases in terms of skills (ability to ride a bike), access (ownership of a bike), and uses (reasons for and frequency of cycling). While most young people (98%) learned how to ride a bike as a child, an important minority do not continue cycling beyond childhood. Among those who continue, the use of the bike often changes over time to become less utilitarian and more recreational and occasional. The main determinants explaining cycling practices among young people are socialization (the parents’ cycling practices and level of education), gender, and the spaces of everyday life (place of residence and school). The results point to several levers to foster cycling among young people, to anchor sustainable mobility practices for years to come.</p></div>","PeriodicalId":47824,"journal":{"name":"International Journal of Sustainable Transportation","volume":"18 2","pages":"Pages 103-114"},"PeriodicalIF":3.9,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48087771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}