March 22, 2017 11:20 am USC Students Put Their Heads Together To Analyze Worst Crosstown Traffic Records from 17,000 sensors across LA could help policymakers better understand the traffic flow. Patrick Healy reports for the NBC4 News at 4 p.m. on Tuesday March 21, 2017. US & World Videos 3:33 Crowd of protesters grow at UCLA despite order to disperse 3:33 Call for national, state and local response to campus unrest 2:51 Wife of deputy shot at West Covina stop light speaks on his recovery 1:36 Arizona Senate repeals 1864 abortion ban 1:10 Interesting facts you never knew about the Kentucky Derby
