Blog
June 30, 2023
Driving the Transition: The Need for Balancing Lithium Supply and the Rising Demand for Electric Vehicles
Electric vehicles (EVs) offer a promising solution to environmental issues, driving a widespread push for rapid electrification to combat carbon emissions. The need to mitigate the impacts of climate change has led to an urge towards the widespread adoption of EVs. Nevertheless, as we transition to this cleaner alternative, it is essential to acknowledge and…
June 15, 2023
How Would EV Charging Demands Affect the Electric Grid in California?
In 2021, battery electric vehicles (BEVs) accounted for 3% of the light duty vehicle sales in the U.S., with California accounting for 39% of those sales. However, as the U.S. moves towards more widespread BEV adoption, concerns arise about the electric grid’s capacity to manage the surge in demand. By analyzing the power demands…
July 8, 2022
Are high interest rates undercutting the case for EVs?
At first glance, high gas prices should be driving increased demand for EVs. The basic intuition is: EVs cost more up front, but save you fuel expenses over time; the larger the spread between the cost of driving with gas and the cost of driving with electricity, the more attractive EVs become. But as Liam…
July 7, 2022
Will bad infrastructure sink the EV market?
Yesterday the UW got a visit from Ford, and I got the chance to check out a couple of the company’s new electric offerings. First up was the Mustang Mach-E. The Mach-E has been in production since 2020 and I’d previously driven one at a conference last fall: But this one was special: it was…
May 19, 2021
The Meaning of Equity in Transportation
Content and discussions about equity in transportation have increased substantially in recent decades, but assessments of what does or does not constitute an equitable distribution of transportation costs and benefits have existed within the profession much longer. In a new paper published in Transportation Research Interdisciplinary Perspectives (TRIP), I along with Professors Don MacKenzie and…
April 20, 2021
How does ridehailing use affect vehicle miles traveled?
Sustainable Transportation Lab alum and UC Davis PhD Student Summer Wu and I have published another new paper on the effects of ridehailing services in the US. Like our other recent paper, this one relies on data from the U.S. National Household Travel Survey, but now we focus on how the use of ridehailing services…
February 11, 2021
How do Americans combine ridehailing with other modes?
There is ongoing interest in how people use ridehailing services like Uber and Lyft: what modes they replace; what purposes they serve; how they interact with transit. In a new paper in the journal Transportation, Sustainable Transportation Lab alum and current UC Davis PhD student Summer Wu and I look specifically at how travelers link…
September 16, 2019
Progress in estimating additional travel induced by automated vehicles
Andisheh Ranjbari, Sustainable Transportation Lab alumna Jingya Gao, and I have just published a paper in the journal Transportation that investigates how relieving travelers from the task of driving affects their value of travel time. In past work, we have shown that by reducing the value of travel time, automated vehicles could lead to significantly…
August 1, 2019
EVI-ABM Code and Dashboard UI
Place for link to EVI-ABM code and dashboard UI.
November 29, 2018
How to Regulate Bike Sharing Parking? -Reflection after Trying Seattle’s JUMP Bike
Tianqi Zou When I first visited Seattle last April, there were three bike sharing companies operating in the city, ofo, Spin, and Lime. However, when I returned in September, ofo and Spin had already left the market, and Lime has been in a monopoly position for several months. Last week, Uber’s JUMP launched its bike…
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