Here's some evidence that creating those wide gaps does help. http://www.slate.com/articles/life/transport/2011/10/rolling_speed_harmonization_how_colorado_fig

Here's some evidence that creating those wide gaps does help. http://www.slate.com/articles/life/transport/2011/10/rolling_speed_harmonization_how_colorado_fights_congestion_on_i_.single.html http://www.slate.com/articles/life/transport/2011/10/rolling...