Driverless Cars Are Coming, But They'll Bring Congestion and More Fuel Consumption

Although driverless vehicles are being touted for their potential to reduce congestion and fuel consumption, among other benefits, Casey B. Mulligan argues they'll actually induce the reverse.

1 minute read

April 26, 2013, 7:00 AM PDT

By Jonathan Nettler @nettsj


"Driverless vehicles are expected to help children, the blind, the elderly and others who currently cannot safely drive themselves. Helped by their huge amounts of data and computing power, driverless cars are also purported to reduce traffic congestion and nationwide fuel consumption by driving smarter."

"But smarter driving will lead to more driving, because smarter driving reduces the cost per mile of vehicle usage," argues Mulligan, an economics professor at the University of Chicago. "The end result of additional driving could be more traffic and more aggregate fuel consumption."

For Mulligan, this might not necessarily be bad news though. "Even if driverless vehicles led to more congestion and more aggregate fuel consumption, driverless vehicles would be a welcome technological advance, because the billions of hours that people already devote to driving could be put to alternative uses."

Wednesday, April 24, 2013 in The New York Times

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

July 9, 2025 - Diana Ionescu

Green vintage Chicago streetcar from the 1940s parked at the Illinois Railroad Museum in 1988.

Chicago’s Ghost Rails

Just beneath the surface of the modern city lie the remnants of its expansive early 20th-century streetcar system.

July 13, 2025 - WTTV

Aerial view of downtown San Antonio, Texas at night with rotating Tower of the Americas in foreground.

San Antonio and Austin are Fusing Into one Massive Megaregion

The region spanning the two central Texas cities is growing fast, posing challenges for local infrastructure and water supplies.

July 3, 2025 - Governing

White park shuttles with large Zion logo on side and red rock cliffs in background in Zion National Park.

Since Zion's Shuttles Went Electric “The Smog is Gone”

Visitors to Zion National Park can enjoy the canyon via the nation’s first fully electric park shuttle system.

1 hour ago - Reasons to Be Cheerful

Chart of federal transportation funding comparing Biden and Trump administration spending.

Trump Distributing DOT Safety Funds at 1/10 Rate of Biden

Funds for Safe Streets and other transportation safety and equity programs are being held up by administrative reviews and conflicts with the Trump administration’s priorities.

2 hours ago - Transportation for America

Close-up on yellow and black TAXI sign on top of beige car in central Munich, Germany.

German Cities Subsidize Taxis for Women Amid Wave of Violence

Free or low-cost taxi rides can help women navigate cities more safely, but critics say the programs don't address the root causes of violence against women.

3 hours ago - Bloomberg