An drawing with cars, streets, and people.
Photo credit
Illustration by William Rieser.

Hyper drive

CSE researchers offer insights on the future of autonomous vehicles

Last April, a blue-and-green electric bus with tiny wheels and space for 12 passengers appeared on the Washington Avenue bridge in Minneapolis. Guided by a remote sensing system, the driverless vehicle shuttled riders back and forth between the University of Minnesota’s East and West Bank campuses during the course of a day. With a maximum speed of 25 miles per hour, the bus was barely faster than many of the bicyclists crossing the span.

But for a handful of U researchers, it was a reminder that the age of autonomous vehicles is racing toward us at top speed—and in many ways, our society and infrastructure are woefully unprepared for its arrival.

Driverless cars and trucks raise new questions about how we live, travel, work, and connect. Will we own vehicles or share them? How will we ensure that everyone is served by the new AV infrastructure? Who will regulate it? And who will pay for it?

Off the map

Such questions have brought together a team of researchers led by Zhi-Li Zhang, who holds the endowed Qwest Chair in the University of Minnesota’s College of Science and Engineering (CSE), to search for answers.

In October, the University received a three-year $1.75 million Smart and Connected Communities grant from the National Science Foundation (NSF) to study the potential impact on communities. The U’s initiative is one of 13 nationwide to receive the award.

Some companies, like Uber and Waymo (a division of Google), have invested heavily in AV research and have a stake in its development. But Saif Benjaafar, a  McKnight Distinguished University Professor at CSE and director of the U’s Initiative on the Sharing Economy, says research institutions like the University of Minnesota can provide a more unvarnished and comprehensive perspective on what such technologies mean for our collective future. 

“We don’t have skin in the game,” he said, “so we can be a resource to policymakers and others as they think about the future and how they approach regulation.”

The University comes to the AV study with a long history of finding ways to improve transportation and make it safer. In the late 1950s, University of Minnesota researcher James “Crash” Ryan invented the retractable seat belt and other innovations. The U’s Center for Transportation Studies, formed in the late 1980s, is well-known for its studies of transportation-related issues, including AVs.

The faculty involved in the AV project, nearly all of whom are supported by endowed chairs that give them the time and latitude to dive into such timely topics, come from the Center for Transportation Studies as well as the College of Design, Humphrey School of Public Affairs, and CSE, bringing a range of perspectives. 

No one can predict the future, of course, but here are some of the ways these researchers believe AVs will affect individuals and communities: 

1. You probably won’t own a vehicle.

“If you mention self-driving cars to most people, they think, ‘Oh great, the next car I buy is going to cost $10,000 more because I’m going to have to pay for the technology,’” said Frank Douma, a research fellow in the Center for Transportation Studies and director of the Humphrey School’s State and Local  Policy Program. “In reality, they may not have to buy one at all.”

Benjaafar points to the so-called “sharing economy” as a sign of things to come: For many people in urban areas, using app-based ride services like Uber or Lyft is easier and more economical than owning a car, finding parking, and paying for gas and insurance.

As the world transitions to AVs, Douma and others believe it’s more likely that we’ll ride in cars owned by someone else—probably a company like Waymo—and pay per trip or through a subscription service. 

2. The cloud will steer your car.

Proponents of AVs say the technology eliminates congestion by replacing human decisions with a centralized control system that determines the most efficient way to get all vehicles to their destinations. Cars wouldn’t have to stop at intersections, and a “smart cloud-based commuter system” (SCCS) would slow or speed each vehicle to prevent crashes.

“These cloud systems have the potential to bring about far-reaching changes,” Zhang said.

But if car companies operated independent fleets of vehicles, who would be responsible for ensuring a secure connection to the SCCS? Who would manage the system, have access to AV data, and provide a backup system for safety—the federal government, municipalities, or a private contractor? 

A list of five levels that describe autonomous vehicles.

3. Flowers might grow  in the streets.

Because the technology that controls AVs is so precise, the width of our roads could be reduced, said Fisher, Dayton Hudson Chair in Urban Design and director of the U’s Minnesota Design Center. What’s more, a SCCS could direct traffic so efficiently that just one (or two, at most) lanes could accommodate a large volume of vehicles. 

Fisher imagines that highways will look more like railroad beds, with two hard-surfaced parallel paths supporting the wheels of vehicles. That means more space could be devoted to bike lanes, walking paths, or even gardens.

“Much of the street surface could be pervious,” Fisher said. “It could be green. It could be gravel. Runoff won’t have to go into a storm sewer system and pollution won’t be swept into our rivers.” 

4. Parking lots, meters, and garages will vanish.

Roughly a third of all land in urban areas is used for parking and storing cars. Surface lots, street spaces, parking garages, and even your home garage could be repurposed in a world where a fleet of AVs are in constant circulation.

“These cars can go away at night, park themselves outside the city, and then be called back when needed,” Benjaafar said. 

Fisher sees an opportunity to replace parking structures with affordable housing—which is increasingly in short supply as the urban population grows. As for home garages, he says homeowners will still need a place for bikes, lawnmowers, and snow shovels. 

5. Vehicles will be places for working, sleeping, crafting.

If you don’t have to pay attention to traffic on your ride to work, you’ll be free to do other things. Fisher believes manufacturers will capitalize on that idea, and that we’ll see vehicles designed for particular activities such as delivering groceries.

“Mercedes Benz is looking at cars that are also meeting spaces, so instead of driving to your meeting you actually have the meeting in the vehicle,” he said.

Happy hour could begin on the way home, in a specially equipped bar car.

6. Your car will run your errands.

Will AVs make us more productive? Imagine a world where AVs deliver your groceries, drop the kids at soccer practice, and pick up your dry cleaning.

“When I’m not using it, the car can do other things for me,” Benjaafar said. “It’s going to unleash a lot of hours in the day that we’d otherwise spend driving or sitting in traffic. That could reduce frustration and improve overall well-being.”

7. Everyone will be able to hitch a ride.

AVs offer huge potential benefits  to the elderly, disabled people, and others who cannot drive and easy access to transportation can have a profound impact on their physical health and social well-being, said Yingling Fan, a McKnight Land Grant professor in the Humphrey School and Center for Transportation Studies.

“Transportation has direct connection to health,” she said. “It provides access to health care and medical clinics and is central to our basic living needs. It allows us to participate in recreational and social activities, both of which are important for individual health.”

Fan and others worry, however, that without proper incentives or regulation, some communities will be left behind. Policymakers will have to ensure that ride providers don’t serve only affluent communities. They’ll also have to consider the potential impact on rural areas, which may not have enough people to attract ride providers or the funds to build digital and physical infrastructure.

Fan believes communities need to create a collective vision for how AVs will work in their locale.

“Not all questions can be answered with computer simulation,” she said.

The research and analysis generated by the three-year NSF-supported study will guide future leaders and lawmakers as they make decisions about AVs that affect communities and, in fact, entire countries. More specifically, the University of Minnesota team would like to develop a handful of simulations that would illustrate how choices regarding AVs might play out.

Story by Joel Hoekstra; edited from Legacy, University of Minnesota Foundation magazine.


If you’d like to support faculty research, visit our CSE giving page.