In which scenario is it legal to use a mobile device while driving?

Using a mobile device with a hands-free setup while driving is legal in many jurisdictions because it allows drivers to maintain focus on the road while communicating. Hands-free devices enable a driver to keep both hands on the steering wheel and eyes on the road, reducing the risk of distraction. Laws around mobile device usage while driving are often designed to promote safety, and hands-free devices are generally recognized as a safer alternative, provided that they are used within the legal guidelines of the state or country.

The other scenarios generally include restrictions that prioritize road safety. For instance, being stopped at a traffic light might lead to the temptation of multitasking, which is still discouraged in many places. Using a mobile device in a school zone can be particularly dangerous as it involves a high concentration of pedestrians, specifically children. Driving during bad weather conditions also necessitates full attention on driving to manage hazards effectively, making the use of mobile devices inadvisable during such times.