What must a driver ensure before turning on a personal digital assistant while driving?

A driver must ensure that the personal digital assistant is a hands-free device before using it while driving because safety is paramount when operating a vehicle. Using a hands-free device allows the driver to maintain full control of the vehicle and reduces distractions, enabling them to focus on the road. This is particularly important as engaging directly with devices can lead to inattention and increase the risk of accidents.

While factors like having a fully charged battery and voice control capabilities are important for usability, they do not address the crucial safety aspect of driving. The requirement for the device to be hands-free ensures that the driver can operate their vehicle safely while still utilizing technology. Using a hands-free option eliminates the need for manual interactions, thereby minimizing distractions.