Final Answer:
The interval of c) 3 seconds is allowed if your vehicle is 6m long. (option c)
Step-by-step explanation:
The recommended following distance for vehicles is often expressed in terms of time intervals rather than a fixed distance. The general rule is to maintain a minimum of a three-second interval behind the vehicle in front of you. This interval allows for a safer driving distance, providing adequate time to react to sudden changes in traffic conditions.
Calculation and Rationale:
The three-second rule is a practical guideline to ensure a safe following distance. To apply this rule, select a fixed point on the road, such as a sign or a tree. When the vehicle ahead of you passes that point, start counting seconds. If it takes three seconds or more for your vehicle to reach the same point, you are maintaining a safe following distance. This accounts for the time it takes to perceive a hazard, react, and bring the vehicle to a stop if necessary.
Adaptation to Vehicle Length:
While the three-second rule is a standard recommendation, it's essential to adapt it to factors like adverse weather conditions, road conditions, and the size of your vehicle. For a 6m long vehicle, maintaining a three-second interval becomes particularly crucial, as the larger size may require additional stopping distance. Adhering to this guideline contributes to overall road safety and helps prevent collisions due to inadequate following distances.(option c)