Professor Benjaafar writing on his white-board desk with a marker.

Smart economies

CSE professor focuses on shared mobility for its potential to reduce environmental impacts

The sharing economy—also called access economy, on-demand economy, and peer-to-peer economy—has exploded over the past decade.

Car-sharing and ride-sharing, house- and apartment-sharing, crowdfunding, peer-topeer lending, and the like are revolutionizing the way people live and do business by enabling greater efficiency, less waste, extra income for providers, and greater access for buyers.

A recent McKinsey & Co. report found that nearly a third of the working-age population in the United States and Europe engages in some form of independent work. Saif Benjaafar, Distinguished McKnight University Professor in the Department of Industrial and Systems Engineering, wants to help ensure that this societal sea change is a net positive for everyone.

Benjaafar is a leading authority on sharing economy business models and the smart technology that propels them. He points to ride-sharing companies like Lyft and Uber to explain the kind of analysis in which he specializes.

“They do dynamic pricing, so they sense in real time what the supply of drivers is and what the demand of customers is, and then they price accordingly using sophisticated algorithms,” he said.

“A lot of the work I do is in that area—how should a platform set prices as supply and demand change in time and in space,” he explained. “That’s one notion of ‘smartness.’” 

“Another notion is matching. Which drivers do you match with which rider? Do you pull the trigger and match [the first available driver to the rider] or do you wait for a better match? If you wait too long you could lose the rider,” he said—and drivers don’t want to be idle for too long, either, because they’re not earning money then.

Ride-sharing companies also employ smart technology for routing algorithms, to find the best way to a given destination at any given time.

“These platforms have enabled micro-entrepreneurship, enabling micro-sellers to function as if they have the scale of a large company,” Benjaafar said.

A win for all, including the environment

He’s keenly interested in environmental sustainability, and his work tends to focus on shared mobility because of its potential for reducing environmental impacts.

“One of the key ideas of the sharing economy is that there’s excess capacity in the world that goes untapped. So if you think of your car and all of the time it sits idle, it’s depreciating and occupying valuable real estate,” he said.

“A lot of stuff we own is not really well used, or not used all the time,” Benjaafar noted.

“Before we had these online platforms, it was difficult to leverage that kind of excess capacity,” he added. 

It’s a balancing act, Benjaafar said.

“There’s a possibility that everybody wins—that consumers benefit because now they can fulfill their needs without the hassle of ownership, and the service provider benefits by monetizing an expensive asset.”

But there’s also the potential for overconsumption, he explained, again using car-sharing as an example.

Consumers who might otherwise walk, bike, or use public transit may choose to drive when that choice becomes accessible.

“This is where public policy comes into play,” he said.

Who bears the risk?

Government can intervene by providing incentives for consumers to make the lowest-impact choice for any given situation. Other challenges remain, Benjaafar said. And whether the on-demand economy ends up enhancing societal well-being overall depends partly on whether and how they’re addressed.

Someone whose main source of income is driving for a ride-sharing company doesn’t have employer-sponsored vacation or health insurance, for example.

“If I’m driving for Uber, I’m not just supplying my time,” he explained.

“I’m also supplying my car,” he said. “And I’m responsible for maintenance and insurance. So there’s this fundamental shift in who bears a lot of the risk.”

The shift is already well underway, Benjaafar said, so it’s important to wrestle with its pitfalls now.

“I think the rules of the game should not be left in the hands of the platform operators and service providers,” he said. “Our research group is unique, because we’re stepping back and looking at the broader implications for society.”

Story by Susan Maas


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