Vehicle fleet turnover and the future of fuel economy
© 2019 The Author(s). Published by IOP Publishing Ltd. The real-world impacts of the Trump administration's effort to roll back the Corporate Average Fuel Economy (CAFE) standards for new light-duty vehicles are not obvious, because new vehicles are highly durable and remain in the on-road flee...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021
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| Online Access: | https://hdl.handle.net/1721.1/135136 |
| _version_ | 1826192310285631488 |
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| author | Keith, David R Houston, Samantha Naumov, Sergey |
| author_facet | Keith, David R Houston, Samantha Naumov, Sergey |
| author_sort | Keith, David R |
| collection | MIT |
| description | © 2019 The Author(s). Published by IOP Publishing Ltd. The real-world impacts of the Trump administration's effort to roll back the Corporate Average Fuel Economy (CAFE) standards for new light-duty vehicles are not obvious, because new vehicles are highly durable and remain in the on-road fleet for many years. We demonstrate that freezing CAFE between 2020-2026, one of the proposals circulated by the Trump administration, will increase fleet fuel consumption and greenhouse gas emissions until 2040 and beyond, because relatively less-efficient vehicles sold during this time would remain in use for potentially decades. We argue for stringent fuel-economy standards for new vehicles, and for placing greater emphasis on the retirement and disposal of the oldest and most inefficient vehicles on our roads. These steps will help to build a fleet that is efficient, low-emission, and adaptable as the automotive industry enters a period of unprecedented technological change. |
| first_indexed | 2024-09-23T09:09:32Z |
| format | Article |
| id | mit-1721.1/135136 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:09:32Z |
| publishDate | 2021 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1351362021-10-28T04:47:07Z Vehicle fleet turnover and the future of fuel economy Keith, David R Houston, Samantha Naumov, Sergey © 2019 The Author(s). Published by IOP Publishing Ltd. The real-world impacts of the Trump administration's effort to roll back the Corporate Average Fuel Economy (CAFE) standards for new light-duty vehicles are not obvious, because new vehicles are highly durable and remain in the on-road fleet for many years. We demonstrate that freezing CAFE between 2020-2026, one of the proposals circulated by the Trump administration, will increase fleet fuel consumption and greenhouse gas emissions until 2040 and beyond, because relatively less-efficient vehicles sold during this time would remain in use for potentially decades. We argue for stringent fuel-economy standards for new vehicles, and for placing greater emphasis on the retirement and disposal of the oldest and most inefficient vehicles on our roads. These steps will help to build a fleet that is efficient, low-emission, and adaptable as the automotive industry enters a period of unprecedented technological change. 2021-10-27T20:10:53Z 2021-10-27T20:10:53Z 2019 2021-03-25T12:32:40Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/135136 en 10.1088/1748-9326/AAF4D2 Environmental Research Letters Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf IOP Publishing IOP Publishing |
| spellingShingle | Keith, David R Houston, Samantha Naumov, Sergey Vehicle fleet turnover and the future of fuel economy |
| title | Vehicle fleet turnover and the future of fuel economy |
| title_full | Vehicle fleet turnover and the future of fuel economy |
| title_fullStr | Vehicle fleet turnover and the future of fuel economy |
| title_full_unstemmed | Vehicle fleet turnover and the future of fuel economy |
| title_short | Vehicle fleet turnover and the future of fuel economy |
| title_sort | vehicle fleet turnover and the future of fuel economy |
| url | https://hdl.handle.net/1721.1/135136 |
| work_keys_str_mv | AT keithdavidr vehiclefleetturnoverandthefutureoffueleconomy AT houstonsamantha vehiclefleetturnoverandthefutureoffueleconomy AT naumovsergey vehiclefleetturnoverandthefutureoffueleconomy |