August 10, 2018 10:20 am New Traffic Sensors May Reduce Congestion in Chula Vista Within the next few months, new traffic sensors will replace outdated models. NBC 7’s May Tjoa explains how they may reduce traffic and can work with autonomous cars. US & World Videos 0:28 A Vermont state trooper plunges into icy pond to rescue 8-year-old girl 2:59 Keep these travel etiquette tips in mind this holiday season 2:20 Bodies of Missing Men Found in Rubber Bins Inside Storage Unit 1:42 Hundreds of Golden Retrievers Walk a Mile for the Official Boston Marathon Dog 1:51 Typewriter Shop Owner Receives Gift From Tom Hanks