Most motorists are adhering to a new Tennessee law that restricts the use of cellphones in active school zones, according to McMinnville Police Chief Bryan Denton. The law, which went into effect Jan. 1, says drivers of any vehicle will now face a maximum $50 fine for talking on a hand-held cellphone while driving in an active school zone. Drivers under 18 aren’t allowed to use hands-free phone devices and face up to a $50 fine.