Today is the first day of school for many school districts in North Texas, including Dallas, Ft Worth, Irving, Arlington, and Grand Prairie. Now more than ever be aware of school zones, especially in this age of distracted drivers AND WALKERS staring into cell phones. Texas school zone law, under HB 347, prevents using a cell phone when driving through an active school crossing zone. However, another good rule is to make eye contact with students at a crossing prior to entering.