气候变化领域集成服务门户(CCPortal): Decarbonizing US passenger vehicle transport under electrification and automation uncertainty has a travel budget

CCPortal

DOI	10.1088/1748-9326/ab7c89
	Decarbonizing US passenger vehicle transport under electrification and automation uncertainty has a travel budget
	Alarfaj A.F.; Griffin W.M.; Samaras C.
发表日期	2020
ISSN	17489318
卷号	15 期号:9
英文摘要	The transportation sector is at the beginning of a transition represented by electrification, shared mobility, and automation, which could lead to either increases or decreases in total travel and energy use. Understanding the factors enabling deep decarbonization of the passenger vehicle sector is essential for planning the required infrastructure investments and technology adoption policies. We examine the requirements for meeting carbon reduction targets of 80% and higher for passenger vehicle transport in the United States (US) by midcentury under uncertainty. We model the changes needed in vehicle electrification, electricity carbon intensity, and travel demand. Since growth in fleet penetration of electric vehicles (EVs) is constrained by fleet stock turnover, we estimate the EV penetration rates needed to meet climate targets. We find for a base case level of passenger vehicle travel, midcentury deep decarbonization of US passenger transport is conditional on reducing the electricity generation carbon intensity to close to zero along with electrification of about 67% or 84% of vehicle travel to meet decarbonization targets of 80% or 90%, respectively. Higher electricity generation carbon intensity and degraded EV fuel economy due to automation would require higher levels of fleet electrification and/or further constrain the total vehicle travel allowable. Transportation deep decarbonization not only depends on electricity decarbonization, but also has a total travel budget, representing a maximum total vehicle travel threshold that still enables meeting a midcentury climate target. This makes encouraging ride sharing, reducing total vehicle travel, and increasing fuel economy in both human-driven and future automated vehicles increasingly important to deep decarbonization. © 2020 The Author(s). Published by IOP Publishing Ltd.
语种	英语
scopus关键词	Automation; Budget control; Carbon; Decarbonization; Economics; Electric power generation; Electric utilities; Fuel economy; Investments; Electric Vehicles (EVs); Electricity generation; Infrastructure investment; Passenger transport; Passenger vehicles; Technology adoption; Transportation sector; Vehicle electrifications; Fleet operations; automation; electricity generation; electrification; energy use; technology adoption; transport vehicle; United States
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153743
作者单位	Department of Civil and Environmental Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, United States; Department of Engineering and Public Policy, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, United States
推荐引用方式 GB/T 7714	Alarfaj A.F.,Griffin W.M.,Samaras C.. Decarbonizing US passenger vehicle transport under electrification and automation uncertainty has a travel budget[J],2020,15(9).
APA	Alarfaj A.F.,Griffin W.M.,&Samaras C..(2020).Decarbonizing US passenger vehicle transport under electrification and automation uncertainty has a travel budget.Environmental Research Letters,15(9).
MLA	Alarfaj A.F.,et al."Decarbonizing US passenger vehicle transport under electrification and automation uncertainty has a travel budget".Environmental Research Letters 15.9(2020).