When are you allowed to use a mobile phone while driving?

Using a mobile phone while driving presents significant safety risks, which is why regulations are in place to minimize distractions. The correct answer focuses on the use of hands-free devices, which are designed to allow drivers to maintain control of their vehicle while still being able to communicate. With hands-free technology, a driver can keep both hands on the wheel and maintain focus on the roadway, reducing the likelihood of accidents caused by distractions.

This option aligns with many road safety laws that mandate hands-free use to ensure that drivers remain vigilant and responsible. Other scenarios, such as using a phone freely or only for emergencies, do not prioritize driver safety in the same manner. For example, using a mobile phone at traffic lights can still be distracting when a driver should be prepared to move as soon as the light changes. Thus, the emphasis on hands-free devices encapsulates the balance between connectivity and road safety.