Showing papers on "Sustainable transport published in 2022"

Hydrogen Fuel for Future Mobility: Challenges and Future Aspects

Abstract: Nowadays, the combustion of fossil fuels for transportation has a major negative impact on the environment. All nations are concerned with environmental safety and the regulation of pollution, motivating researchers across the world to find an alternate transportation fuel. The transition of the transportation sector towards sustainability for environmental safety can be achieved by the manifestation and commercialization of clean hydrogen fuel. Hydrogen fuel for sustainable mobility has its own effectiveness in terms of its generation and refueling processes. As the fuel requirement of vehicles cannot be anticipated because it depends on its utilization, choosing hydrogen refueling and onboard generation can be a point of major concern. This review article describes the present status of hydrogen fuel utilization with a particular focus on the transportation industry. The advantages of onboard hydrogen generation and refueling hydrogen for internal combustion are discussed. In terms of performance, affordability, and lifetime, onboard hydrogen-generating subsystems must compete with what automobile manufacturers and consumers have seen in modern vehicles to date. In internal combustion engines, hydrogen has various benefits in terms of combustive properties, but it needs a careful engine design to avoid anomalous combustion, which is a major difficulty with hydrogen engines. Automobile makers and buyers will not invest in fuel cell technology until the technologies that make up the various components of a fuel cell automobile have advanced to acceptable levels of cost, performance, reliability, durability, and safety. Above all, a substantial advancement in the fuel cell stack is required.

Analysis of the Influential Factors towards Adoption of Car-Sharing: A Case Study of a Megacity in a Developing Country

Abstract: Motorization has been escalating rapidly in developing countries, posing a severe challenge to sustainable urban mobility. In the past two decades, car-sharing has emerged as one of the most prominent alternatives to facilitate smart mobility solutions, thereby helping to reduce air pollution and traffic congestion. However, before its full-scale deployment, it is essential to understand the consumers’ acceptance of car-sharing systems. This study aimed to assess the public perception and acceptance of the car-sharing system through a stated preference (SP) questionnaire in the city of Lahore, Pakistan. The collected data contained detailed information on various service attributes of three alternative modes (car-sharing, private car, and taxi) in addition to the sociodemographic attributes of respondents. Data analysis and interpretation were performed using econometric models such as the Multinomial Logit Model (MNL), the Nested Logit Model (NL), and the Random Parameter Logit Model (RPL). Study findings revealed that several generic attributes such as travel time, travel cost, waiting time, and privacy were predicated as significant influential factors towards the adoption of car-sharing. Sociodemographic attributes, including age, education, monthly income, the individuals who had driver’s licenses, and frequency of travel in a week, were also found to be significant. The findings of the current study can provide valuable insights to stakeholders and transportation planners in formulating effective policies for car-sharing.

Walking on sunshine: Pairing electric vehicles with solar energy for sustainable informal public transport in Uganda

Abstract: Minibus taxi public transport is a seemingly chaotic phenomenon in the developing cities of the Global South with unique mobility and operational characteristics. Eventually this wide-spread fleet of minibus taxis will have to transition to electric vehicles. This paper examines the impact of this inevitable evolution on a city-wide scale in Kampala, Uganda. We present a generic simulation environment to assess the grid impact and charging opportunities, given the unique paratransit mobility patterns. We used floating car data to assess the energy requirements of electric minibus taxis, which will have a knock-on effect on the region’s already fragile electrical grid. We used spatio-temporal and solar photovoltaic analyses to assess the informal and formal stops that would be needed for the taxis to recharge from solar PV in the region’s abundant sunshine. The results showed that the median energy demand across all simulated days of the fleet of taxis was 220 kWh /d. This ranged to a maximum of 491 kWh /d, with a median charging potential (stationary time) across taxis of 8 h /d to 12 h /d. The median potential for charging from solar PV ranged from 0.24 kWh/m2 to 0.52 kWh/m2 per day, across the taxis. Our simulator and results will allow traffic planners and grid operators to assess and plan for looming electric vehicle roll-outs to the most-used mode of transport in Africa.

Hydrogen Energy as Future of Sustainable Mobility

Abstract: Conventional fuels for vehicular applications generate hazardous pollutants which have an adverse effect on the environment. Therefore, there is a high demand to shift towards environment-friendly vehicles for the present mobility sector. This paper highlights sustainable mobility and specifically sustainable transportation as a solution to reduce GHG emissions. Thus, hydrogen fuel-based vehicular technologies have started blooming and have gained significance following the zero-emission policy, focusing on various types of sustainable motilities and their limitations. Serving an incredible deliverance of energy by hydrogen fuel combustion engines, hydrogen can revolution various transportation sectors. In this study, the aspects of hydrogen as a fuel for sustainable mobility sectors have been investigated. In order to reduce the GHG (Green House Gas) emission from fossil fuel vehicles, researchers have paid their focus for research and development on hydrogen fuel vehicles and proton exchange fuel cells. Also, its development and progress in all mobility sectors in various countries have been scrutinized to measure the feasibility of sustainable mobility as a future. This, paper is an inclusive review of hydrogen-based mobility in various sectors of transportation, in particular fuel cell cars, that provides information on various technologies adapted with time to add more towards perfection. When compared to electric vehicles with a 200-mile range, fuel cell cars have a lower driving cost in all of the 2035 and 2050 scenarios. To stimulate the use of hydrogen as a passenger automobile fuel, the cost of a hydrogen fuel cell vehicle (FCV) must be brought down to at least the same level as an electric vehicle. Compared to gasoline cars, fuel cell vehicles use 43% less energy and generate 40% less CO2.

Sustainable Mobility as a Service: Supply Analysis and Test Cases

Abstract: Urban mobility is one of the main issues in the pursuit of sustainability. The United Nations 2030 Agenda assigns mobility and transport central roles in sustainable development and its components: economic, social, and environment. In this context, the emerging concept of Mobility as a Service (MaaS) offers an alternative to unsustainable mobility, often based on private car use. From the point of view of sustainable mobility, the MaaS paradigm implies greater insights into the transport system and its components (supply, demand, and reciprocal interactions). This paper proposes an approach to the transport system aimed at overcoming the current barriers to the implementation of the paradigm. The focus is on the implications for the transport supply subsystem. The investigation method is based on the analysis of the main components of such subsystem (governance, immaterial, material, equipment) and its role in the entire transport system. Starting with the first experiences of Finnish cities, the paper investigates some real case studies, which are experimenting with MaaS, to find common and uncommon elements. From the analyses, it emerges that the scientific literature and real experiences mainly focus on the immaterial components alone. To address the challenges related to sustainable mobility, this paper underlines the need to consider all components within a transport system approach. The findings of the paper are useful in several contexts. In the context of research, the paper offers an analysis of the transport supply system from the point of view of the MaaS paradigm. In the real context, the paper offers further useful insights for operators and decision-makers who intend to increase the knowledge and skills necessary to face challenges related to the introduction of MaaS.

Towards sustainable transport in developing countries: Preliminary findings on the demand for mobility-as-a-service (MaaS) in Metro Manila

Abstract: Mobility as a Service (MaaS) is a recent concept that is gaining momentum in both the scientific world and the private sector. First studies and field trials – essentially conducted in developed countries – suggest that MaaS can influence people’s mobility behavior and create more efficient and sustainable transport systems for the future. We intend to contribute to the existing knowledge about MaaS by extending the scope to the context of developing countries where MaaS could be a potential strategy to address existing transport problems. Our case study focuses on Metro Manila (Philippines), an emerging Asian megacity. We analyzed its citizens’ (N = 238) readiness for and attitude towards MaaS, and how a MaaS-system could influence users’ mobility behavior. Considering mobility-related and socio-demographic characteristics, our statistical models give preliminary insights about the potential MaaS users and how a MaaS system would create value for them. While the vast majority (84%) of respondents stated they were likely to use a MaaS app, the main reasons for adoption appear to be reliability and cost savings. In addition, we found evidence that MaaS could shift users’ mobility behavior towards more sustainable transport modes (i.e., from private and low-capacity modes towards public transport). Policy implications and future research paths for MaaS in developing countries are also discussed. Considering the novelty and complexity of this research area, we call for additional research in this field.

A Review of the Integrated Renewable Energy Systems for Sustainable Urban Mobility

Abstract: Several challenges have emerged due to the increasing deterioration of urban mobility and its severe impacts on the environment and human health. Primary dependence on internal combustion engines that use petrol or diesel has led to poor air quality, time losses, noise, traffic jams, and further environmental pollution. Hence, the transitions to using rail and or seaway-based public transportation, cleaner fuels, and electric vehicles are some of the ultimate goals of urban and national decision-makers. However, battery, natural gas, hybrid, and fuel cell vehicles require charging stations to be readily available with a sustainable energy supply within urban regions in different residential and business neighborhoods. This study aims to provide an updated and critical review of the concept and recent examples of urban mobility and transportation modes. It also highlights the adverse impacts of several air pollutants emitted from internal combustion engine vehicles. It also aims to shed light on several possible systems that integrate the electric vehicle stations with renewable energy sources. It was found that using certain components within the integrated system and connecting the charging stations with a grid can possibly provide an uninterrupted power supply to electric vehicles, leading to less pollution, which would encourage users to use more clean vehicles. In addition, the environmental impact assessments, as well as several implementation challenges, are discussed. To this end, the main implementation issues related to consumer incentives, infrastructure, and recommendations are also reported.

Wishful thinking? Addressing the long-term implications of COVID-19 for transport in Nigeria

Abstract: With their inherent economic and infrastructure challenges, developing countries must assess commuters' travel behaviour and establish whether consumers' desire for sustainable transportation is feasible or merely wishful thinking. Using a qualitative research design, these issues were explored based on semi-structured interviews conducted with 72 participants across the six geopolitical zones of Nigeria. Findings suggest that the desires and dreams of the commuters are great, and they want to reduce their journeys, work from home, and do online shopping. However, when they consider the inherent challenges, they can only hope for a better future. COVID-19 has impacted the ownership or use of motorised and non-motorised transport, but this is also influenced by affordability, convenience, and awareness. Likewise, there are long-term effects on home and work location choices, but this is further influenced by the large informal economy of the country, job accessibility and the infrastructural developments across the country.

Sustainable Transportation in Practice: A Systematic Quantitative Review of Case Studies

Abstract: After the COVID-19 pandemic and the spectrum of new climate change disruptions in the supply chain, a holistic approach towards sustainable transportation is needed. Sustainable transportation could benefit sustainable development from different angles; reduced traffic deaths, increased share of renewable energy, higher quality of transport-related infrastructure, increased satisfaction with public transportation, increased responsible consumption and production, and reduced fossil fuel consumption. This study is an attempt to show whereon the scholars were focused previously and where the focus needs to be more on. This study has reviewed 358 case studies and categorized them into twenty groups based on the transportation mode and eleven groups based on the authors’ primary areas of concern. Keyword analysis followed by topics modeling showed three non-overlapping trends in the cohort. The results, with a corroboratory investigation on the benefits of the United States’ infrastructure bill, were discussed in four categories: in-vehicle improvements, built-environment elements, human factors, and planning and regulations.

A Win-Win Scheme for Improving the Environmental Sustainability of University Commuters’ Mobility and Getting Environmental Credits

Abstract: European Union Member States are called upon to meet internationally proposed environmental goals. This study is based, in particular, on the recommendation of the European Union (EU), which encourages Member States to pursue effective policies to reduce greenhouse gas (GHGs) emissions, including through appropriate changes in the behavioral habits of citizens. In this respect, among the main sectors involved, transport and mobility should certainly be mentioned. National institutions should be adequately involved in order to achieve the objectives set; in this regard, universities must certainly be considered for their educational value. These latter, for instance, could commit to improving the environmental performance of the mobility of their commuter students (to a not insignificant extent), since commuting modes are often the cause of high CO2 emissions; indeed, they still largely involve the use of internal combustion engines based on fossil fuels. In this paper, the effectiveness of a smartphone-app-based method to encourage commuter students to adopt more sustainable transport modes is evaluated. In more detail, starting from a statistical analysis of the status quo of mobility habits of a sample of students at the University of Palermo (Italy), an improvement of current habits toward a more sustainable path is encouraged through a new application (specifically created for this purpose) installed on students’ smartphones. Then, the daily and annual distances traveled by commuters with the new mobility modes are calculated, and the resulting savings in energy and CO2 emissions are estimated. Finally, it is proposed that the reduced emissions could be converted into energy-efficiency credits that the University could use to enter the emission trading system (ETS), here contextualized within the Italian “TEE” (“Energy Efficiency Credits”) scheme, while the benefits for students participating in the program could consist of reduced fees and free access to university services. The results obtained show the feasibility of the proposal. This approach can be considered a useful model that could be adopted by any other public institutions—not only universities—to facilitate their path toward decarbonization.

Sustainable development goals and transportation modes: analyzing sustainability pillars of environment, health, and economy

Abstract: Based on the scores and trends of Sustainable Development Goals, Iran, our case study, has been unsuccessful in nearly all the pillars of sustainable development despite the variations in socioeconomic variables related to the SDGs. This implies a comprehensive underdevelopment in Iran, necessitating the improvement of infrastructure which significantly affects all the pillars of sustainable development including environment, health, and economy. This study, takes transportation as an important infrastructure which has various direct and indirect impacts on all pillars of sustainable development, especially in the case study of Iran. To evaluate this, the present study aims to investigate 1) which sustainability perspective dominates in Iran (strong sustainability, weak sustainability, or health-centered sustainability); and 2) the consistency degree of each transportation mode with each pillar of sustainability including environment, health, and economy. We employ VAR and simultaneous equations system to find which perspective of sustainable development dominates Iran; and to rank the transportations modes in accordance with their consistency with sustainable development in Iran during 1979–2016. Overall, the results of this study is found to be significant and support the strong sustainability perspective in Iran. The most compliant transportation modes with the sustainable development in Iran are then ranked as: a) rail, b) air, c) road, and d) maritime transportation. These results suggest the policy-makers to: 1) value the environmental issues at the top of the agenda for the sustainability strategies; and 2) to shift the load of passenger and goods to the rail transportation by investing and developing the rail network.

Sustainable Mobility as a Service: Dynamic Models for Agenda 2030 Policies

Abstract: Growth trends in passenger transport demand and gross domestic product have so far been similar. The increase in mobility in one area is connected with the increase in GDP in the same area. This increase is representative of the economic and social development of the area. At the same time, the increase in mobility produces one of the most negative environmental impacts, mainly determined by the growth of mobility of private cars. International attention is given to the possibilities of increasing mobility and, therefore, social and economic development without increasing environmental impacts. One of the most promising fields is that of MaaS: Mobility as a Service. MaaS arises from the interaction of new user behavioral models (demand) and new decision-making models on services (supply). Advanced interaction arises from the potentialities allowed by emerging ICT technologies. There is a delay in the advancement of transport system models that consider the updating of utility and choice for the user by means of updated information. The paper introduces sustainability as defined by Agenda 2030 with respect to urban passenger transport, then examines the role of ICT in the development of MaaS formalizing a dynamic model of demand–supply interaction explicating ICT. Finally, the advanced Sustainable MaaS, defined SMaaS, is analyzed, evidencing the contribution to achieving the goals of Agenda 2030.

System Dynamics Modeling and Fuzzy MCDM Approach as Support for Assessment of Sustainability Management on the Example of Transport Sector Company

Abstract: Contemporary challenges for development should involve a sustainable approach. One of the important sectors where such challenges are observed is transport. In a wide range of studies addressing environmental, social, and economic dimensions of sustainability, an approach that combines these dimensions as an integrated technique to assess sustainable development of passenger rail transport organizations is still lacking. The first aim of the presented research is to offer a relatively comprehensive collection of railway sustainability indicators as well as a novel causal loop. The second aim is to assess and improve sustainable management using a case study of a passenger rail transport company. To model the relationships inside and around the transport company, the system dynamics (SD) methodology was chosen, being the primary contribution of the study. Additionally, the Fuzzy-TOPSIS logic is required to find the most appropriate scenarios that may change future strategies by making them more socially and environmentally friendly. The proposed research may support experts in assessing sustainability management in transport companies and improve their performance considerably.

A legitimacy theory perspective on Scope 3 freight transportation emissions

Abstract: Freight transportation emissions reduction is on the environmental sustainability agenda for the logistics and transportation function in many organizations. Transportation is the fastest growing form of emissions in developing countries and is second only to electricity emissions generation globally. However, freight transportation is not a priority on the overall organizational sustainability agenda for many companies. This research uses in-depth interviews with 12 organizations to provide insight into the Transportation functional and the organizational level action and commitment to freight transportation emissions reduction as part of the overall corporate sustainability agenda. The context of this research takes the perspective of shippers to understand the benefits perceived by shippers in joining a green network/partnership focused on the reduction of freight emissions, fuel consumption, and the associated costs. In most organizations, reducing freight emissions is managed within the Transportation function and there is a lack of organizational focus on outsourced freight transportation emissions reduction. Given the increasing saliency of emissions reductions in many organizations, this represents a gap that needs to be addressed. The research suggests methods for creating more concern and visibility of freight transportation emissions.

Multi-criteria decision analysis for prospective sustainability assessment of alternative technologies and fuels for individual motorized transport

Abstract: Abstract Reducing greenhouse gas (GHG) emissions in the transport sector is one of the biggest challenges in the German energy transition. Furthermore, sustainable development does not stop with reducing GHG emissions. Other environmental, social and economic aspects should not be neglected. Thus, here a comprehensive sustainability assessment for passenger vehicles is conducted for 2020 and 2050. The discussed options are an internal combustion engine vehicle (ICEV) fuelled with synthetic biofuel and fossil gasoline, a battery electric vehicle (BEV) with electricity from wind power and electricity mix Germany and a fuel cell electric vehicle (FCEV) with hydrogen from wind power. The life cycle-based assessment entails 13 environmental indicators, one economic and one social indicator. For integrated consideration of the different indicators, the MCDA method Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) is chosen. For the assessment, a consistent assessment framework, i.e. background scenario and system boundaries, and a detailed modelling of vehicle production, fuel supply and vehicle use are the cornerstones. The BEV with wind power is the most sustainable option in 2020 as well as in 2050. While in 2020, the second rank is taken by the ICEV with synthetic biofuel from straw and the last rank by the FCEV, in 2050 the FCEV is the runner-up. With the help of MCDA, transparent and structured guidance for decision makers in terms of sustainability assessment of motorized transport options is provided. Graphical abstract

Social Sustainable Urban Air Mobility in Europe

Abstract: The first step to steer passenger Urban Air Mobility (pUAM) towards the necessity of sustainability is to understand its impact on our urban transportation systems. This research emphasises the social footprint of passenger drones in scheduled operation as an early business model in European Functional Urban Areas. The literature review is guided by the corresponding Sustainable Urban Mobility Indicators (SUMI). The prospective impact which the introduction of pUAM has on the evaluation of European transportation systems regarding their affordability for the public, their inclusivity for mobility-impaired groups, their accessibility to commuters and the level of customer satisfaction is analysed. Furthermore, the impact of pUAM on the perceived quality of public urban space is examined. Results indicate the overall social footprint of passenger drones in European transport systems to be negative. Early market pUAM may lead to an unbalanced distribution of potential benefits, with services tailored to address only a limited number of citizens. Highlighting pathways for a societal benefiting technology, recommendations are provided for urban planning and city development.

Car driving, air travel or more sustainable transport? Socio-psychological factors in everyday mobility and long-distance leisure travel

Abstract: A decrease in unsustainable mobility is needed for everyday mobility as well as for leisure travel, here defined as overnight travel for longer distances, in order to reach decarbonisation goals. So far studies that explicitly target both are rare. The survey presented here examines socio-psychological and socio-economic variables that might influence individual use of more or less sustainable transport modes for everyday mobility and for long-distance leisure travel. It was conducted through an online questionnaire among a sample of n = 1982 residents in Germany, representative of the German population holding a drivers’ license in terms of age and gender. Use of transport mode (the dependent variable) was operationalized by contrasting (a) car travel (considered the unsustainable mode) versus other transport modes for everyday mobility and (b) plane trips (the unsustainable mode) versus other transport modes for long-distance leisure travel. Respondents reported past transport mode use and intentions for future transport. Independent variables were transport habits, self-efficacy beliefs, awareness of need, awareness of consequences, perceived behavioural control, personal and social norms, non-moral aspects, emotional consequences, further negative or positive consequences (i.e., the socio-psychological variables), and socio-economic variables. Together, the socio-psychological and socio-economic variables explained significant portions of the variance in the dependent variables. Socio-economic factors were stronger predictors for everyday mobility than for long-distance leisure travel. Perceived behavioural control was an overall consistent and strong predictor, increasing the likelihood of more sustainable travel mode use. We discuss entry points for interventions based on our findings.

Vehicular Traffic in Urban Areas: Health Burden and Influence of Sustainable Urban Planning and Mobility

Abstract: Vehicular traffic is one of the major sources of air pollution in European cities. This work aims to understand which characteristics of the urban environment could influence mobility-related air pollution, quantify the health impacts of exposure to traffic-derived PM2.5 and NO2 concentrations, and assess the potential health benefits expected from traffic interventions. The health benefits modeled are intended to provide a set of comparable data to support decision-makers and encourage informed decision-making to design healthier cities. Targeting a large geographical coverage, 12 European cities from 9 countries were comparatively assessed in terms of mean daily traffic volume/area, the number of public transport stops/area, and the percentage of green and outdoor leisure areas, among other urban indicators. This was implemented using an open-source data mining tool, which was seen as a useful engine to identify potential strategies to improve air quality. The comparison of urban indicators in the selected cities evidenced two trends: (a) cities with the most heterogeneous distribution of public transport stops, as an indicator of poor accessibility, are also those with the lowest proportion of km dedicated to cycleways and footways, highlighting the need in these cities for more sustainable mobility management; and (b) the percentage of green and outdoor leisure areas may influence the share of journeys by bicycle, pointing out that promoting the perception of green routes is relevant to enhance the potential of active transport modes. Socioeconomic factors can be key determinants of the urban indicators and would need further consideration. For the health impact assessment (HIA), two baseline scenarios were evaluated and compared. One is based on mean annual traffic contributions to PM2.5 concentrations in each target city (ranging between 1.9 and 13 µg/m3), obtained from the literature, and the second is grounded on mean annual NO2 concentrations at all available traffic and urban background stations within each city (17.2–83.5 µg/m3), obtained from the European Environment Agency database. The intervention scenarios modeled were designed based on traffic mitigation strategies in the literature, and set to ranges of 6–50% in traffic-derived PM2.5 concentrations and of 4–12.5% in NO2 concentrations. These scenarios could result in only a 1.7% (0.6–4%) reduction in premature mortality due to exposure to traffic-derived PM2.5, and 1.0% (0.4–2%) due to exposure to NO2, as the mean for all the cities. This suggests that more ambitious pollution abatement strategies should be targeted.

Measuring Road Transport Sustainability Using MCDM-Based Entropy Objective Weighting Method

Abstract: Road haulage solutions are incredibly adaptable, having the capacity to link domestically and internationally. Road transportation offers a greener, more efficient, and safer future through sophisticated technology. Symmetry and asymmetry exist widely in industrial applications, and logistics and supply chains are no exception. The multi-criteria decision-making (MCDM) model is considered as a complexity tool to balance the symmetry between goals and conflicting criteria. This study can assist stakeholders in understanding the current state of transportation networks and planning future sustainability measures through the MCDM approach. The main purpose of this paper is to evaluate and compare the sustainable development of existing road transportation systems to determine whether any of them can be effectively developed in the Organization for Economic Cooperation and Development (OECD) countries. The integrated entropy–CoCoSo approach for evaluating the sustainability of road transportation systems is introduced, and the framework process is proposed. The entropy method defines the weight of the decision criteria based on the real data. The advantage of the entropy method is that it reduces the subjective impact of decision-makers and increases objectivity. The CoCoSo method is applied for ranking the road transportation sustainability performance of OECD countries. Our findings revealed the top three countries’ sustainability performance: Japan, Germany, and France. These are countries with developed infrastructure and transportation services. Iceland, the United States, and Latvia were in the last rank among countries. This approach helps governments, decision-makers, or policyholders review current operation, benchmark the performance of other countries and devise new strategies for road transportation development to achieves better results.

Studentś home-university commuting patterns: a shift towards more sustainable modes of transport

Abstract: Students commuting to and from university campuses have important social, environmental and transportation impacts. Based on a questionnaire conducted with 686 students from the University of Minho, Portugal, this study analyses the transport modes used in their commuting trips, the potential to shift towards more sustainable modes and the respective CO2 savings by considering two scenarios: an optimistic and a most likely scenario. Although 54% of students travel less than 5 km and 62% travel less than 20 min, 42% of them prefer to drive to university. Considering the students’ travel distances and times, 55% of the trips could potentially be carried out by active modes of transport, while motorised trips could decrease from 70% to 45%. Depending on the scenario analysed, the modal shift can reduce the emissions of CO2 from 8% up to 27%. The findings described in this study can help university campus managers and urban planners in adopting planning policies to make mobility more sustainable.

Transport Authorities and Innovation: Understanding Barriers for MaaS Implementation in the Global South

Abstract: Mobility-as-a-Service (MaaS) is a recent concept that is seeing increasing interest across the world. First studies and field trials in developed cities suggest that MaaS can influence people’s mobility behavior and create more sustainable transport systems. However, many findings are not transferable to the Global South context, considering that in terms of transport infrastructure, institutional setups, and citizens’ preferences, most developing cities present significantly different characteristics. Thus, many critical questions remain unanswered, e.g., ‘How to implement MaaS in a developing context?’, ‘What are the main challenges?’, and ‘Who should lead this development?’. This research work considers a public-pushed development and aims to shed light on barriers that transport authorities might face. First, barriers are identified through a literature review at the intersection of transport research and public sector innovation. Second, the barriers are analyzed based on the technology, organization, and environment (TOE) framework. Third, Global South relevance is determined through a two-round expert survey. Data related issues (e.g., standardized open data) have been identified as the most critical barrier. Also, multimodal transport planning and coordinating intermodal trips seem to be crucial challenges, considering highly fragmented operator landscapes and the lack of integrated transport planning approaches. In addition, auto-centric developments, current institutional setups, and transport authorities’ organizational structures could hamper a MaaS transition in the Global South. This article contributes to the emerging literature on MaaS governance and provides insights on the capabilities of developing cities to establish MaaS and other transport innovations.

For sustainable development in the transportation sector: Determinants of acceptance of sustainable transportation using the innovation diffusion theory and technology acceptance model

Abstract: With global interest in environmental concerns, the importance of sustainable development has consistently increased. With this trend, the concept of sustainable transportation is an urgent issue in both developed and developing countries. Thus, the current study examines user adoption of sustainable transportation and proposes an integrated model of two theoretical frameworks: the innovation diffusion theory and technology acceptance model. The structural results with 250 respondents in Korea find a sequential connection for users' intention to use, while two main determinants of intention—perceived usefulness and attitude—as well as the roles of their environmental knowledge and perceived compatibility, are also highlighted. Based on these findings, both practical and theoretical implications were presented.