Final answer:
To maintain a safe space cushion between vehicles on Virginia roads, one should use defensive driving techniques, such as the three-second rule, which enables safe following distances and reaction times.
Step-by-step explanation:
When driving from 36-45 mph on Virginia roads, the best practice to maintain a space cushion between you and the vehicle ahead of you is through the use of defensive driving techniques. It is important to anticipate the actions of other drivers and leave enough space to react safely to unexpected situations. Following the three-second rule, where you stay at least three seconds behind the vehicle in front of you, is an example of a defensive driving method designed to provide a safe following distance and reaction time.
In the given scenarios, applying defensive driving tactics would involve being cautious around pedestrians, such as the woman pushing a baby stroller, and understanding external cues, such as the behavior of the dog and reaction to emergency vehicles like an ambulance. Situations depicting decisions based on road safety can also involve a consideration of the consequences, such as breaking traffic rules in an emergency situation to maximize utility and maintain safety.