Avoidable Chaos? (IMAGE) University of Arizona College of Engineering Caption This 2009 photo shows a Houston Fire Department truck ladder flipped on its side and crushing a car. Smart traffic control systems like the one being tested by UA engineers in Arizona's Maricopa County could make scenes like this a thing of the past. Credit Photo courtesy KTRK-TV Houston Usage Restrictions Please attribute to KTRK-TV Houston License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.