Final answer:
A safe following distance is typically 3-4 vehicle lengths, which allows for sufficient reaction time. The distance can change with speed and conditions, and when crossing a road, always ensure the oncoming vehicle is far enough away to do so safely.
Step-by-step explanation:
The question pertains to how many vehicle lengths should be maintained between your vehicle and another when following, particularly in the context of a PIT (Pursuit Intervention Technique), which is a police maneuver. The correct spacing can vary depending on speed and conditions, but a rule of thumb for safe driving under normal conditions is to keep a distance of at least 3-4 vehicle lengths. This allows for adequate time to react and stop if necessary.
Understanding the safe following distance is crucial, as it directly impacts your ability to react to unexpected events. If a car is 28 meters away, equivalent to 8 car lengths, it may be safe to cross the road depending on the speed of the oncoming vehicle and road conditions. Always ensure there is enough time to cross safely before proceeding.