Some traffic jams have no apparent cause — no accident, no stalled vehicle, no lanes closed for construction. There is no easy way out of these maddening messes once you're stuck in them, but a new ...

Most traffic jams are unnecessary, and this deeply irks mathematicians who specialize in traffic flow. They reserve particular vitriol for local transport engineers. “They do not have competencies in ...

During rush hour, maddening traffic jams can arise without an obvious cause. In May mechanical engineer Morris Flynn of the University of Alberta produced a model that shows how these “jamitons,” or ...