Final answer:
Careless driving is described as operating a vehicle in a negligent or reckless manner that indicates disregard for the safety of others. The example illustrates Peter's impatience and potential reckless behavior behind the wheel.
Step-by-step explanation:
21. Careless driving is defined as driving or stopping a motor vehicle on a public roadway in a negligent or reckless way that shows disregard for the lives and safety of others. In the scenario provided, Peter is demonstrating behaviors that could be considered as such by tailgating and impatiently honking at another driver who is traveling at the minimum speed limit. It’s important to remember that driving responsibly is not only about adhering to the speed limit, but also about respecting other road users and operating a vehicle in a manner that ensures everyone's safety.