When is it permissible to use a cell phone while driving?

Using a cell phone with a hands-free device is permissible while driving because it minimizes distractions and keeps the driver's hands on the wheel and attention on the road. Hands-free technology allows drivers to make calls, send messages, or use navigation systems without having to physically hold the phone or take their eyes off the road, thus promoting safer driving practices.

The other scenarios typically present more significant risks. For instance, using a phone while stopped at a traffic light could lead to distractions that affect one’s ability to react to changing traffic conditions once the light turns green. Answering calls or texting when the road is clear might encourage unsafe behavior, as it can still divert focus from driving. Limiting cell phone usage to emergencies is prudent, but it doesn’t encompass the safe use of hands-free devices, which is explicitly designed to facilitate communication while prioritizing driver safety.