African Transport Studies最新文献

Evaluating the adoption of electric vehicles: Insights from Ghana 评估电动汽车的采用情况：加纳的启示

African Transport Studies Pub Date : 2024-01-01 DOI: 10.1016/j.aftran.2024.100007

Charles Atombo , Gideon Pappoe , Maxwell Selase Akple , David Adzah

{"title":"Evaluating the adoption of electric vehicles: Insights from Ghana","authors":"Charles Atombo , Gideon Pappoe , Maxwell Selase Akple , David Adzah","doi":"10.1016/j.aftran.2024.100007","DOIUrl":"10.1016/j.aftran.2024.100007","url":null,"abstract":"<div><p>Electric vehicles (EVs) are eco-friendly automobile innovation and is evolving as a promising solution to global challenges such as energy scarcity and environmental pollution. However, adoption of EVs in Ghana remains limited. Hence, the study examined the underlying factors affecting EVs adoption in Ghana using web-based survey involving 902 participants across Ghana. The study employed Innovation Diffusion Theory and Binary Logistic Regression to address the objective. The result shows that gender, driving license, driving experience, vehicle ownership, source of information on EVs, and knowledge of EVs were significant demographic factors related to the adoption of EVs. Apparently, being male, middle age, driving experience ranging from 6 to 20 years, higher-income earners, private car owners, familiarity with EVs, and those with knowledge of EVs from sources like internet and school were more inclined to adopt EVs. Moreover, factors such as economic benefits, availability of charging infrastructure, environmental concerns, and self-image are more likely to increase EVs adoption. Categorically, the perception that EVs: save fuel, provide economic advantages, reduced air pollution, produced low carbon emissions, protect the environment, are easy to maintain and availability of repair resources are more likely to motivate the adoption of EVs. Furthermore, charging stations availability, personal image enhancement, and peer influence are closely related to the adoption of EVs. However, not opting to adopt EVs is closely related to concerns about tax incentives associated with owning an EV, the distance traveled before recharging, and the belief that EVs have low noise levels. Policy implications were also discussed.</p></div>","PeriodicalId":100058,"journal":{"name":"African Transport Studies","volume":"2 ","pages":"Article 100007"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950196224000061/pdfft?md5=97b3bfc0c23232c1b10c4bc78742f4fb&pid=1-s2.0-S2950196224000061-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141639376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluating the categorical effect of vehicle characteristics on exhaust emissions 评估车辆特性对尾气排放的分类影响

African Transport Studies Pub Date : 2024-01-01 DOI: 10.1016/j.aftran.2024.100008

A.K. Milku , F. Attiogbe , C. Atombo , N.S.A. Derkyi , E.L. Asuako

{"title":"Evaluating the categorical effect of vehicle characteristics on exhaust emissions","authors":"A.K. Milku , F. Attiogbe , C. Atombo , N.S.A. Derkyi , E.L. Asuako","doi":"10.1016/j.aftran.2024.100008","DOIUrl":"10.1016/j.aftran.2024.100008","url":null,"abstract":"<div><p>The study assessed the categorical effect of <em>vehicle age, frequency of maintenance and emission technology</em> on vehicle emissions. Concentrations of carbon dioxide, hydrocarbons, carbon monoxide, and nitrogen oxide samples were taken from one thousand and two (1002) light-duty gasoline vehicles at three vehicle inspection centers in the city of Accra. Vehicle age was positively related to CO and HC emissions. The use of emission technology was negatively related to CO and HC emissions, but positively related to NO<sub>x</sub>. Vehicle maintenance had a significant negative relationship with HC but no significant relationship with CO, CO<sub>2</sub>, or NO<sub>x</sub>. Categorically, moderate and over-aged vehicles were positively related to CO and HC with over-aged vehicles being more so. Furthermore, 2-way and 3-way converter were negatively related to exhaust emissions, but 2-way converter was positively related to NO<sub>x</sub>. However, the coefficient value of the significant relationship between 3-way converter and CO (β = −0.374) as well as HC (β = −0.460) emissions was higher than 2-way converter. Regular maintenance of vehicles showed significant negative relations with HC, with insignificant relation with CO, CO<sub>2</sub> and NO<sub>x</sub> emissions. The findings suggest that vehicle age, regular maintenance and use of emission technology are critical factors to consider when reducing vehicle emissions.</p></div>","PeriodicalId":100058,"journal":{"name":"African Transport Studies","volume":"2 ","pages":"Article 100008"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950196224000073/pdfft?md5=c8442b346f0b0e56a82a81c30fd5be48&pid=1-s2.0-S2950196224000073-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141639375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Segmenting and investigating pedestrian-vehicle crashes in Ghana: A latent class clustering approach 加纳行人与车辆碰撞事故的分类与调查：潜类聚类法

African Transport Studies Pub Date : 2024-01-01 DOI: 10.1016/j.aftran.2024.100010

Cailis Bullard , Emmanuel Kofi Adanu , Jun Liu , William Agyemang , Steven Jones

{"title":"Segmenting and investigating pedestrian-vehicle crashes in Ghana: A latent class clustering approach","authors":"Cailis Bullard , Emmanuel Kofi Adanu , Jun Liu , William Agyemang , Steven Jones","doi":"10.1016/j.aftran.2024.100010","DOIUrl":"10.1016/j.aftran.2024.100010","url":null,"abstract":"<div><p>In low- and middle-income countries (LMIC) pedestrians and cyclists account for approximately 26 % of the road traffic deaths, which is a considerable amount as it is well known that the majority (90 %) of the world's road traffic deaths occur in these countries. In Africa however, pedestrian and cyclist deaths account for 44 % of their yearly road related deaths. Ghana is no exception to this trend; in fact, it has been estimated that pedestrian crashes alone account for 36.7 % of road related deaths in the country. Therefore, the objective of this study is to use historical crash records from 2018 to 2020 to explore pedestrian-vehicle crashes in Ghana, to identify the groups of pedestrians represented in pedestrian-vehicle crashes by use of a latent class analysis (LCA) model, then conduct injury severity analyses using a mixed logit approach on each pedestrian group found in the LCA modeling. Results indicate that by segmenting the pedestrian crash data into homogenous groups, some variables were found to only be significantly associated with injury severity within some classes. Other variables were found to be significant across multiple classes yet experience different trends within each. For example, no traffic control was found to be significant within three subgroups but affect severity levels differently across classes. Further the darker hours of the day were more likely to be associated with fatal and major injury outcomes across multiple classes. This study provides new direction for studying different types of pedestrian crashes, particularly in LMICs and provides targeted interventions.</p></div>","PeriodicalId":100058,"journal":{"name":"African Transport Studies","volume":"2 ","pages":"Article 100010"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950196224000097/pdfft?md5=97a15531dea439b5a46eb9de020e9c44&pid=1-s2.0-S2950196224000097-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142272412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Decarbonizing Ghanaian cities through the lens of sustainable transportation planning: Policy and institutional response 通过可持续交通规划实现加纳城市的去碳化：政策和机构对策

African Transport Studies Pub Date : 2024-01-01 DOI: 10.1016/j.aftran.2024.100013

Evelyn Amekudzi , Emmanuel Amponsah , Michael Poku-Boansi , Obaa Yaa Aninwaa Anin-Yeboah , Michael Osei Asibey

{"title":"Decarbonizing Ghanaian cities through the lens of sustainable transportation planning: Policy and institutional response","authors":"Evelyn Amekudzi , Emmanuel Amponsah , Michael Poku-Boansi , Obaa Yaa Aninwaa Anin-Yeboah , Michael Osei Asibey","doi":"10.1016/j.aftran.2024.100013","DOIUrl":"10.1016/j.aftran.2024.100013","url":null,"abstract":"<div><div>The global emphasis on decarbonization has intensified in response to urban struggles with climate change. The growing demand for mobility in urban areas intensifies climate change crisis, requiring a reevaluation and transformation of current transportation systems. This study investigates the role of policy frameworks and institutional responses in the connection between sustainable transportation planning and decarbonization in Ghanaian cities. The study relied on both primary and secondary data sources. Primary data was obtained from eight respondents from the Development Planning Department, and the Transport Department of the Kumasi Metropolitan Assembly, Department of Urban Roads and the Environmental Protection Agency through face-to-face interviews. The findings showed that the existing policy landscape of Ghana does not sufficiently provide for transport decarbonization. Consequently, this neglect of the policies and other socio-cultural issues holistically constrains efforts by the institutional structures to decarbonize the city's transportation system. A holistic approach combining policy innovation, institutional capacity building, and community engagement is crucial for effectively decarbonizing Ghanaian cities and developing a more sustainable and resilient urban environment.</div></div>","PeriodicalId":100058,"journal":{"name":"African Transport Studies","volume":"2 ","pages":"Article 100013"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The contribution of cargo tricycles to the urban economy of Ghanaian cities; A case study of greater Kumasi metropolitan area 货运三轮车对加纳城市经济的贡献；大库马西都市区案例研究

African Transport Studies Pub Date : 2024-01-01 DOI: 10.1016/j.aftran.2024.100005

Kwasi Kwafo Adarkwa, Michael Ayertey Nanor, Michael Osei Asibey, Gideon Adu Sarfo Atta

{"title":"The contribution of cargo tricycles to the urban economy of Ghanaian cities; A case study of greater Kumasi metropolitan area","authors":"Kwasi Kwafo Adarkwa, Michael Ayertey Nanor, Michael Osei Asibey, Gideon Adu Sarfo Atta","doi":"10.1016/j.aftran.2024.100005","DOIUrl":"https://doi.org/10.1016/j.aftran.2024.100005","url":null,"abstract":"<div><p>The introduction of cargo tricycles into the modal mix has significantly impacted the movement of freight in Ghana's large and medium-sized towns. However, this has not been adequately studied. In this paper, we explore the operations of freight hauliers using cargo tricycles within the Greater Kumasi Metropolitan Area (GKMA), and their contribution to the city's economy. Surveys of 173 cargo tricycle operators, 105 patrons or end-users, relevant institutions (the Driver and Vehicle Licensing Authority [DVLA], the Urban Transport Department of the Kumasi Metropolitan Assembly and the Roads Department of the Asokore-Mampong Municipal Assembly), and operator unions were undertaken. These category of respondents were selected and interviewed at five identified tricycle head stations, using semi-structured questionnaires and interview guides. The surveys revealed that cargo tricycles grew at a rate of nearly 13% per annum over the 2015–2021 period. Nearly 40% of these tricycles had a total round-trip length of between 10 and 30 km with seven round trips per day while transporting an average of between 480 and 600 kg of different types of freight including foodstuffs, construction materials, machinery, and refuse. The study estimated that they contribute about GH₵ 205 million annually, to the local economy while employing nearly 3000 operators and assistants. The average value of freight hauled was also estimated at GH₵ 693 million annually. The tricycles offered cheaper means of transport, were convenient, and manoeuvred easily to difficult destinations. However, they posed major safety challenges in the study area, which require prudent interventions.</p></div>","PeriodicalId":100058,"journal":{"name":"African Transport Studies","volume":"2 ","pages":"Article 100005"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950196224000048/pdfft?md5=4292292281bd30d0769f4ba9c71c07ad&pid=1-s2.0-S2950196224000048-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141481479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Macroeconomic impacts of African transport transitions: on the case of electric two-wheelers in Kenya 非洲交通运输转型的宏观经济影响：以肯尼亚电动两轮车为例

African Transport Studies Pub Date : 2024-01-01 DOI: 10.1016/j.aftran.2024.100009

Emmanuel Uzim , James Dixon

{"title":"Macroeconomic impacts of African transport transitions: on the case of electric two-wheelers in Kenya","authors":"Emmanuel Uzim , James Dixon","doi":"10.1016/j.aftran.2024.100009","DOIUrl":"10.1016/j.aftran.2024.100009","url":null,"abstract":"<div><p>The impact of the e-mobility transition on a national economy will depend strongly on that nation's set of fiscal policies regarding vehicle, fuel and electricity taxation. Here, we present a framework and online open-access tool to evaluate the macroeconomic impacts of vehicle electrification in any national context. By applying the framework to the booming electric two-wheeler sector in Kenya, we provide a set of context-specific recommendations regarding the impacts of transport electrification on Kenya's fiscal position, given a set of scenarios relating to vehicle market size and fiscal policy. It was found that in the Kenyan case, the e-mobility transition is unlikely to result in a significant black hole in government finances: for a given two-wheeler market size, it is predicted that the loss in revenue resulting from a business-as-usual shift to electric two-wheelers would result in the loss of only 3% of government revenue from the sector by 2040, totalling approx. KSh1.4bn (under 0.1% of Kenyan GDP in 2023). However, carbon taxation is a significant source of government revenue when applied to polluting technologies such as petrol-powered two-wheelers, potentially doubling the revenue returned from the Kenyan two-wheeler sector by the mid-2030s, relative to what it would be without carbon taxation, if IMF recommendations regarding carbon tax are followed. However, revenue from carbon taxation will dry up as the transition to e-mobility hastens. Of course, any intervention regarding taxation, including carbon tax, must be subject to careful policy analysis. Taxation policy should direct consumers towards desired behaviours (in this case, the uptake of electric over internal combustion-powered two-wheelers) and allow the redistribution of wealth to those most affected by transport poverty.</p></div>","PeriodicalId":100058,"journal":{"name":"African Transport Studies","volume":"2 ","pages":"Article 100009"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2950196224000085/pdfft?md5=c3a9ca797ba0966d7cbb11052c05546c&pid=1-s2.0-S2950196224000085-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141984711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelling lane flow distribution on multi-lane highways: Insights from built-up and non-built-up areas 多车道高速公路车道流量分布建模：城市建成区和非城市建成区的启示

African Transport Studies Pub Date : 2024-01-01 DOI: 10.1016/j.aftran.2024.100011

Kwame Kwakwa Osei , Zakari Abdul Karim Awini , Williams Ackaah

{"title":"Modelling lane flow distribution on multi-lane highways: Insights from built-up and non-built-up areas","authors":"Kwame Kwakwa Osei , Zakari Abdul Karim Awini , Williams Ackaah","doi":"10.1016/j.aftran.2024.100011","DOIUrl":"10.1016/j.aftran.2024.100011","url":null,"abstract":"<div><div>This study investigated lane flow distribution on selected sections on the Kumasi – Accra multilane highway, with a specific focus on a section located in a built-up area, characterized by side frictions and driveways, and another in a non-built up area, characterized by flat terrain with no access or side friction. The study sought to (1) explore the lane flow distribution patterns under varying traffic conditions and roadway environmental types (urban and non-urban), and (2) investigate the combined effect of roadway and traffic conditions on lane flow distribution. Traffic volume data was extracted from video recordings made at the two study sites for two days. At the same time, vehicular speeds were measured with the use of a radar speed gun. The data were explored descriptively, after which multiple linear regression was employed to model the lane flow distribution in the median lane. The results indicated pronounced disparities in lane utilization between the two sites with different vehicle categories exhibiting distinct lane preferences. The model suggested that roadway environment type, proportion of motorcycles in the traffic stream, and total link flow significantly determine the proportion of traffic flow that travel in the median lane whereas the proportion of trotros and the average link speed have marginal influence. The findings emphasize the importance of considering local contextual factors and driver behaviors in modelling lane flow distribution, particularly in developing countries with heterogeneous roadway and traffic conditions.</div></div>","PeriodicalId":100058,"journal":{"name":"African Transport Studies","volume":"2 ","pages":"Article 100011"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transit and fairness: Exploring spatial equity in Accra's public transport system 交通与公平：探索阿克拉公共交通系统的空间公平性

African Transport Studies Pub Date : 2024-01-01 DOI: 10.1016/j.aftran.2024.100012

Elvis Kyere-Gyeabour , Aruna Sivakumar , Samuel Agyei-Mensah

{"title":"Transit and fairness: Exploring spatial equity in Accra's public transport system","authors":"Elvis Kyere-Gyeabour , Aruna Sivakumar , Samuel Agyei-Mensah","doi":"10.1016/j.aftran.2024.100012","DOIUrl":"10.1016/j.aftran.2024.100012","url":null,"abstract":"<div><div>Globally, millions of individuals access services and opportunities on a daily basis using different modes of motorized and non-motorized transportation. However, in the global south, the role of public transport in providing access to services is relatively under-researched due to non-functional public transport services and poor infrastructure. This paper uses data from the Greater Accra Metropolitan Area (GAMA) to empirically contribute to the discourse on how public transport availability varies across different residential locations and assess if there is equitable access to Public Transport Infrastructure and Services (PTIS) across urban and peri-urban areas. A household questionnaire survey was designed to collect data on public transport access based on socioeconomic, socio-cultural, personal preferences/experiences and residential location in the Greater Accra Metropolitan Area (GAMA). A sample size of 1340 respondents, consisting of males and females between the ages of 18 and 70 residing in GAMA, was achieved. The paper also used data from the public and open databases. The Three-Step Floating Catchment Area (3SFCA) and geospatial methods were used to estimate spatial accessibility.</div><div>The study found a significantly high disparity in accessibility to public transport in the Greater Accra Metropolitan Area (GAMA). There is also significant spatial inequality in the level of access to Public Transport Infrastructure and Services (PTIS) in GAMA. The study revealed that the planning and provisioning of public transport infrastructure in GAMA has left areas with inequitable access to transport services. There is the need for increased investment in public transport infrastructure in EAs where Public Transport Infrastructure and Services (PTIS) were found to be very low or low in GAMA.</div></div>","PeriodicalId":100058,"journal":{"name":"African Transport Studies","volume":"2 ","pages":"Article 100012"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0