Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/ab2da8 |
Are e-scooters polluters? The environmental impacts of shared dockless electric scooters | |
Hollingsworth, Joseph; Copeland, Brenna; Johnson, Jeremiah X. | |
2019-08-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2019 |
卷号 | 14期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Shared stand-up electric scooters are now offered in many cities as an option for short-term rental, and marketed for short-distance travel. Using life cycle assessment, we quantify the total environmental impacts of this mobility option associated with global warming, acidification, eutrophication, and respiratory impacts. We find that environmental burdens associated with charging the e-scooter are small relative to materials and manufacturing burdens of the e-scooters and the impacts associated with transporting the scooters to overnight charging stations. The results of a Monte Carlo analysis show an average value of life cycle global warming impacts of 202 g CO2-eq/passenger-mile, driven by materials and manufacturing (50%), followed by daily collection for charging (43% of impact). We illustrate the potential to reduce life cycle global warming impacts through improved scooter collection and charging approaches, including the use of fuel-efficient vehicles for collection (yielding 177 g CO2-eq/passenger-mile), limiting scooter collection to those with a low battery state of charge (164 g CO2-eq/passenger-mile), and reducing the driving distance per scooter for e-scooter collection and distribution (147 g CO2-eq/passenger-mile). The results prove to be highly sensitive to e-scooter lifetime; ensuring that the shared e-scooters are used for two years decreases the average life cycle emissions to 141 g CO2-eq/passenger-mile. Under our Base Case assumptions, we find that the life cycle greenhouse gas emissions associated with e-scooter use is higher in 65% of our Monte Carlo simulations than the suite of modes of transportation that are displaced. This likelihood drops to 35%-50% under our improved and efficient e-scooter collection processes and only 4% when we assume two-year e-scooter lifetimes. When e-scooter usage replaces average personal automobile travel, we nearly universally realize a net reduction in environmental impacts. |
英文关键词 | electric scooter life cycle assessment transportation environmental impacts |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000478679100003 |
WOS关键词 | LIFE-CYCLE ASSESSMENT ; EMISSIONS ; TRANSPORTATION ; PERFORMANCE ; VEHICLES ; ENERGY |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185598 |
专题 | 气候变化 |
作者单位 | North Carolina State Univ, Dept Civil Construct & Environm Engn, Raleigh, NC 27695 USA |
推荐引用方式 GB/T 7714 | Hollingsworth, Joseph,Copeland, Brenna,Johnson, Jeremiah X.. Are e-scooters polluters? The environmental impacts of shared dockless electric scooters[J]. ENVIRONMENTAL RESEARCH LETTERS,2019,14(8). |
APA | Hollingsworth, Joseph,Copeland, Brenna,&Johnson, Jeremiah X..(2019).Are e-scooters polluters? The environmental impacts of shared dockless electric scooters.ENVIRONMENTAL RESEARCH LETTERS,14(8). |
MLA | Hollingsworth, Joseph,et al."Are e-scooters polluters? The environmental impacts of shared dockless electric scooters".ENVIRONMENTAL RESEARCH LETTERS 14.8(2019). |
条目包含的文件 | 条目无相关文件。 |
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