When is it permissible to use a handheld device while driving?

Using a handheld device while driving is only permissible in emergency situations. This restriction is put in place to minimize distractions and ensure the focus remains on the road. In an emergency, the need for immediate communication may outweigh the general prohibition against using such devices while driving.

In contrast, using a handheld device while stopped at a red light may still distract the driver from paying attention to surrounding traffic and road conditions. Similarly, navigating without calling could still demand visual or cognitive attention that diverts focus from driving. The idea that one can use a device at any time if they feel safe creates a subjective standard that could lead to unsafe driving behaviors, as driving conditions can change rapidly and require full attention. Thus, the specific allowance of device use in emergencies is designed to prioritize safety on the road.