In driving, what does the "2-second rule" refer to?

• A. A method for changing lanes
• B. A guideline for safe following distance
• C. A technique for braking safely
• D. A strategy for merging onto highways

Answer: (B)

The "2-second rule" is a guideline for maintaining a safe following distance between your vehicle and the vehicle in front of you. This rule suggests that when following another vehicle, you should ideally stay at least two seconds behind it. To apply this rule, pick a stationary object, such as a sign or a tree, that the vehicle ahead passes, and then count the seconds it takes for your vehicle to reach that same object. If it takes less than two seconds, you are following too closely and should increase your distance.

This rule helps in preventing collisions by giving you enough time to react to sudden stops or emergencies from the vehicle in front. It promotes safer driving practices by establishing a clear guideline that drivers can use irrespective of their speed; as your speed increases, the required following distance also increases, but the two-second rule still applies as a basic principle.