May 19, 2010 11:30 pm Investigation: No Warning of Cell Ban, No Fair Is it legal to enforce a law banning handheld phone use while driving, if the city doesn’t warn you? The NBC10 Investigators find out. US & World Videos 22:22 WATCH: Pa. voters speak on Biden, Trump, abortion, economy, immigration, Israel-Hamas War and more 3:32 Biden on campus protests: ‘Order must prevail' 3:26 Mayor Parker addresses City Council to discuss the future of Philadelphia schools 2:04 Pro-Palestinian protests continue at University of Pennsylvania 1:42 Pro-Palestinian protesters set up camp at Penn