When is it safe to use a mobile phone while driving?

Using a mobile phone while parked on the side of the road is the safest option among the choices provided. When a driver is in a parked position, they are not actively controlling the vehicle or navigating through traffic, which minimizes the risk of distractions that could arise from mobile phone use. This allows the driver to focus fully on their conversation or text message without compromising their attention on the road or surrounding vehicles.

Using a mobile phone while driving, whether on a highway or when stopped at a traffic light, can divert attention from the road, increasing the risk of accidents. Even with hands-free devices, engaging in a phone conversation can lead to cognitive distractions, diverting focus from driving tasks. Therefore, it is always safest to use a mobile phone only when the vehicle is securely parked and not in motion.