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

Using a cell phone while driving is permissible when utilizing a hands-free device, depending on local laws. This answer captures the essence of safe driving practices. Hands-free devices allow drivers to maintain focus on the road while still being able to communicate, which reduces the risk of distraction compared to holding a phone.

Furthermore, many jurisdictions have laws that specifically regulate or prohibit handheld phone use while driving, making it essential to adhere to local regulations. The emphasis on hands-free operation is also grounded in promoting road safety and minimizing potential hazards that can arise from distracted driving.

Other scenarios listed often fail to consider various factors that contribute to road safety. For example, stopping at a red light does not mitigate distractions from using a phone, as the vehicle's surroundings may still require attention. Additionally, the presence of passengers in the car doesn’t inherently affect a driver's ability to focus when using a phone, nor does being free from passengers create a safer environment for phone use. Lastly, assuming it's acceptable to use a phone at any time as long as texting isn't involved overlooks the broader risks of distraction that can arise from phone conversations, thereby contradicting safe driving principles.