Transportation & Vehicle Safety Policy

Interstate 380 at Wilson Avenue exit, Sept. 27, 2016

How to manage what's called a phantom traffic jam

Drive in Iowa and you'll experience it. Traffic moving along and then... brake lights. You look for a cause - but see nothing. Then, as fast as you stopped, you're moving again.

Daniel McGeehee, director of the National Advanced Driving Simulator and the Transportation and Vehicle Safety Policy Research Program at the University of Iowa, says there's a simple explanation for what's called a phantom traffic jam.

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Transportation & Vehicle Safety Policy

Transportation & Vehicle Safety Research program works to improve technology design through a better understanding of human behavior. The challenge is to match user needs with the optimal solutions—technological or otherwise.