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Research: Ride-Hailing Electric Vehicles Offer Triple the Emissions Benefits

Replacing a gas-powered ride-hailing vehicle with an electric vehicle can deliver three times the carbon benefits of a personally owned electric vehicle, according to a University of California, Davis, study of Uber and Lyft data published in the journal Nature Energy.

That’s because ride-hailing vehicles travel more miles than personal vehicles, making them more efficient. Also, they typically charge during the day, when a greater quantity of solar energy is powering the grid.

“Electric vehicles are beneficial, and that benefit is larger if you’re traveling more miles and charging from renewable sources during the day,” said lead author Alan Jenn, a professional researcher at the Institute of Transportation Studies at UC Davis.

Both Uber and Lyft are converting more of their fleet to electric, and Lyft recently committed to becoming 100 percent electric by 2030.

Same level of service, different technology
The study drew from Uber and Lyft data on travel behavior and public charging use in California between early 2017 through late 2018, a time of rapid growth for ride-hailing services.

There have been some concerns about the ability of ride-hailing electric vehicles to provide the same level of service as gas-powered vehicles, due to more limited range and the time needed to charge. The study’s analysis showed those concerns are overstated, noting it found no statistical difference between the two technologies for ride-hailing companies.

Big piece of the public charging pie
Jenn was also surprised to find that, while ride-hailing services are a tiny fraction of traffic, they used more than 30 percent of the energy provided by public charging stations — about 60 times more public energy than that used by privately owned vehicles.

That finding points to the challenge of planning and developing the public infrastructure and charging capacity needed to accommodate both private and ride-hailing fleets. That issue is an active area of research.

Implications for current times
“With COVID-19, it’s hard to make predictions about how services like Uber and Lyft continue,” Jenn said. “That said, California passed legislation in 2018 that compels transportation networking companies to become cleaner, and part of that involves electrification. So there is currently regulatory pressure for these companies to use cleaner vehicles regardless of the pandemic situation.”

While the data was collected in pre-pandemic times, the results also can hold implications for delivery drivers and the gig economy, where drivers make multiple trips throughout the day. Such vehicles, if electrified, offer great emissions savings over vehicles driven less often and charged mostly at night.

The study was funded by the National Center for Sustainable Transportation, which is supported by the U.S. Department of Transportation through the University Transportation Centers program.

Jul 13, 2020Blagojce Krivevski
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Blagojce Krivevski

Blagojce Krivevski is physicist and green technology lover. Keep in touch with Blagojce through his email, web site, Twitter, Linkedin, Facebook and Google+.

July 13, 2020 Electric Car NewsLyft, Uber, UC Davis, University of California Davis
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