Final answer:
The best advice for safe driving regarding cell phone use is to not use the phone while driving unless the car is parked, thereby minimizing distractions and increasing road safety.
Step-by-step explanation:
The best advice for cell phone use while driving is to not make or take calls unless the vehicle is parked. This reduces the risk of distraction and increases the safety of the driver, passengers, and others on the road. Using a hands-free device can reduce radiation to the head, but it's important to remember that even hands-free conversations can distract the driver. Keeping the mobile phone away from the body and not using a cellphone in a car without an external antenna are additional suggestions to mitigate potential health risks related to cell phone usage. However, when it comes to driving safely, the priority should be on minimizing distractions, which includes refraining from texting, taking calls, or any other phone-related activities while the car is in motion.