The speed limit varies but posted in school zones and the fine for speeding in such a zone is up to $500. It also is against the law to pass a school bus when it is stopped and loading or unloading passengers; fines for that are no less than $250 and up to $1,000.
In 2011, state troopers issued almost 3,900 citations in school zones, up from 3,200 a year earlier.
THP Col. Tracy Trott said motorists who are distracted, impatient or careless can expect a stiff penalty for driving unsafely in school zones.
Six-hundred thousand children ride school buses in Tennessee.