Despite the warning signs placed near West University Elementary School, two drivers were caught by surprise this morning as police began enforcing a new ordinance banning cell phone use in the school zone. Parents who were bringing children for the first day of classes praised the new law, which prohibits the use of cell phones or other electronic devices during one-hour periods in the morning and afternoon.... The ban is in effect from 7 a.m. to 8 a.m. and 2:30 p.m. to 3:30 p.m. Violators could be liable for a fine of up to $200 for the first offense and...