Montana Commercial Drivers License (CDL) Practice Test

Using a phone while driving a commercial vehicle is generally restricted to ensure the safety of the driver, the vehicle, and others on the road. The correct approach is that it is acceptable to use a phone only when using a hands-free device. This provision allows the driver to maintain better control of the vehicle as they keep both hands on the steering wheel and their attention on the road. Hands-free devices may include Bluetooth headsets or built-in systems in the vehicle, which enable the driver to communicate without needing to physically handle the phone.

The other scenarios present risks and are discouraged or prohibited. For example, stopping at a red light does not mean a driver has the opportunity to safely use their phone since the vehicle is still in traffic and could be rear-ended or impede traffic flow. Using a phone while driving in city limits or for navigation without a hands-free device also poses significant dangers, as these actions can distract the driver from critical driving tasks, leading to accidents.