Adam and Jamie tackle key congestion questions and unlock the traffic gridlock. They find out if a minor unexpected braking incident can really cause a major ‘shockwave jam’. They also put the European roundabout up against the typical American four-way stop sign to see which is really the most efficient. Meanwhile, Kari, Grant and Tory take on the controversial claim that on a journey of less than 600 kilometers it’s always faster to drive. Plus, can lane changing put your life in danger?
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