House committee substitute makes the following changes to the 3rd edition.

Adds to proposed GS 20-137.3A, which prohibits distracted driving. Now provides that distracted driving includes use of a handheld mobile telephone and use of a handheld electronic device (was, use of an electronic device). Sets out exceptions to the prohibition when (1) the mobile telephone or electronic device is used to communicate an emergency to one of the specified public safety entities, (2) the mobile telephone or electronic device is used in the performance of official duties by one of four specified classes of public safety officers, (3) the device is used by an employee of a public utility or communications provider using the device to carry out official duties in a vehicle registered to the utility or provider, and (4) the device is used by an amateur radio operator to respond to an emergency situation.