When is it illegal to use a cell phone while driving?

Using a cell phone while driving is illegal under specific circumstances that prioritize safety and responsibility on the road. The correct choice highlights that it is illegal to use a cell phone when under the influence. This means if a driver is impaired by alcohol or drugs, they may be subject to stricter restrictions, including prohibitions on cell phone use. This regulation exists because impaired drivers are already at an increased risk of causing accidents; adding cell phone use can exacerbate distractions and impair judgment even further.

While other situations, such as driving in heavy traffic or using a hands-free device, may come with recommendations or guidelines for safe driving, they do not constitute illegal use under Wisconsin law. Furthermore, driving without a permit applies to situations involving licensing rather than cell phone use specifically. Hence, the law especially targets those who are under the influence because of the heightened risk of accidents in those scenarios.