Final answer:
Tailgating is when the driver behind you follows too closely, which is a hazardous driving behavior that increases the risk of collisions. Peter in the scenario was tailgating out of frustration with a slower driver.
Step-by-step explanation:
When the driver behind you is following too closely, it is called tailgating. This behavior is dangerous as it reduces the tailgating driver's ability to react if the car in front stops suddenly and increases the risk of a rear-end collision. In the shared scenario, Peter engaged in tailgating due to his frustration with the slow speed of the car in front of him. This type of driving behavior is aggressive and can lead to accidents. Drivers should always maintain a safe following distance to allow adequate time to react to traffic conditions.