Are you allowed to stop on the side of the motorway to answer a phone call?

In New Zealand, according to traffic regulations, drivers are not permitted to stop on the highway to answer phone calls. This rule is implemented for safety reasons. Vehicles on the highway travel at high speeds, and if a driver is unable to react to emergencies, or if other vehicles cannot avoid a stationary vehicle on the roadside in time, it could likely result in serious traffic accidents. Therefore, it is mandated that drivers should use hands-free devices to answer calls in a safe manner, or only take calls after finding a suitable parking area to stop their vehicle safely.