For the past six months, officers could issue warnings those who weren't complying with the statewide texting ban. That grace period ends Friday.
Texting while driving is now a secondary offense for drivers 18 and older. That means an officer has to stop a driver for another offense first, such as speeding.
But drivers who are minors are not allowed to text or use cellphones or other hand-held devices. For them it's a primary offense.
The law carries possible fines of $150 for the first offense. Repeat offenders could face a $300 fine.
The law doesn't trump city ordinances on texting or cellphone use that might be tougher.
All drivers can text and use their cellphones in cases of an emergency.