Sample Records of Traffic Flow Instabilities

North, Boston, 2011 March 31	North, Boston, 2011 April 14
North, Boston, 2011 April 21	North, Boston, 2011 April 28
North, Boston, 2011 May 12	North, Woburn, 2011 May 12
North, Boston, 2011 May 19	RT 16 North, Portsmouth, 2011 May 19

Vertical axis: speed (mph). Horizontal axis: time (minutes)

Click on individual plots to see details.