Final answer:
The correct answer is option 3) 5 seconds behind the vehicle in front of you. Staying at least 5 seconds behind the vehicle in front of you gives you enough time and space to react and stop if necessary.
Step-by-step explanation:
The correct answer is option 3) 5 seconds behind the vehicle in front of you. It is important to always allow enough room to safely stop in emergencies. Staying at least 5 seconds behind the vehicle in front of you gives you enough time and space to react and stop if necessary.
For example, let's say you are driving at a speed of 60 km/hr (the speed limit in towns and cities). The average length of a car is 3.5 m and the width is 2 m. To cross the road safely, you need to be able to walk at least 4 m further than the width of a car before the car reaches you.
So, the 5-second rule ensures that you maintain a safe distance from the vehicle in front of you, allowing you enough room to stop in case of an emergency.