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Traffic Tech: Study Suggests Cruise Control Designs Could Solve Traffic Jams

Traffic Tech: Phantom traffic jams, in which cars suddenly screech to a dead stop on highways for no apparent reason, have long annoyed drivers. Cruise Control Design Could Change That

Matt McFarland | CNN Tech

In a paper published this week, MIT researchers offer a solution to help alleviate this stop-and-go driving. But a lot would have to go right in order for the idea to work.

“The problem is inherent in our way of driving a car,” Berthold Horn, a co-author of the report and professor at MIT’s Computer Science and Artificial Intelligence Laboratory explained to CNN Tech. “If one car suddenly brakes, the car behind it has to brake and the car behind it has to brake. The braking increases with distance until a car actually stops.”

Horn proposes redesigning the cruise control feature on your car to consider the space in front and behind the vehicle.

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To be sure, there are advanced cruise control systems on the market today that will adapt to the speed of a lead vehicle in order to maintain a steady following distance. But the gap between the vehicle and a trailing car isn’t considered.

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Keeping the same distance between the vehicle in front and the vehicle trailing a car prevents traffic jams MIT’s simulations showed, according to the paper. The findings were published in the IEEE Transactions on Intelligent Transportation Systems.

The technical name for the traffic-busting technology is bilateral control.

There is a catch. Horn said the solution only works if enough drivers adopt the technology. For there to be an immediate impact on traffic, millions of existing vehicles would need to be retrofitted. Horn’s group will next examine what percentage of drivers need to use bilateral control for the benefits to be seen.

Horn acknowledges many drivers may not wish to pay to retrofit their car with bilateral cruise control. He believes that the U.S. government should require automakers to include it, given the positive impact on congestion, public health and pollution.

The National Highway Traffic Safety Administration has not yet researched the technology, according to a spokeswoman.

Related: Lyft’s redesigned street concept could fix L.A. traffic

To make vehicles capable of bilateral control, Horn proposes adding a camera in the front of vehicles, and one in the rear and enhancing advance cruise control options. These cameras would automatically measure the distance to the surrounding vehicles, and maintain a steady gap. The system could also work with radar sensors instead.

READ The full story at CNN Tech

About Matt McFarland

Matt McFarland
Matt covers innovation and transportation for CNN Money. His interests include artificial intelligence, robotics, autonomous vehicles, bikes, deep learning, drones, and multimodal transit . Before joining CNN, he was editor of the Washington Post's Innovations blog. He holds a B.A. in Political Science and Psychology from Dickinson College.

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