Here’s a way to save lives, curb traffic jams and make commutes faster and easier − ban left turns at intersections

Even though research supports the change, most cities have been slow to ban left turns at even the most congested intersections.

Vikash V. Gayah, Associate Professor of Civil Engineering, Penn State • conversation
June 30, 2025 • ~8 min

Surging sales of large gasoline pickups and SUVs are undermining carbon reductions from electric cars

Electric cars are getting a lot of PR buzz, but automakers are still promoting – and many consumers are buying – vehicles that are major gas guzzlers.

John DeCicco, Research Professor Emeritus, University of Michigan • conversation
Sept. 23, 2022 • ~9 min

To make the US auto fleet greener, increasing fuel efficiency matters more than selling electric vehicles

Electric cars get a lot of hype, but EV sales today are actually increasing transportation's carbon footprint. Here's how federal clean-car standards produce this counterintuitive result.

John DeCicco, Research Professor Emeritus, University of Michigan • conversation
Jan. 28, 2021 • ~9 min

Biden's ambitious energy plan faces headwinds, but can move the US forward

Joe Biden has sweeping plans for a clean energy revolution. Congress will be a big speed bump, but it can't block everything.

Scott L. Montgomery, Lecturer, Jackson School of International Studies, University of Washington • conversation
Nov. 23, 2020 • ~9 min

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