Which of the following is a safe driving practice when following another vehicle?

Maintaining a safe following distance based on speed is essential for safe driving, particularly when following another vehicle. This practice allows for ample reaction time if the vehicle in front suddenly brakes or encounters an obstacle. The two-second rule is often recommended, which suggests that drivers should stay two seconds behind the vehicle in front of them, allowing for increased distance at higher speeds.

A safe following distance can also help prevent accidents by reducing the chance of a rear-end collision, which is often caused by being too close to the vehicle ahead. The distance may need to be increased in adverse conditions, such as rain, fog, or on slippery roads, where stopping distances can be significantly longer. This principle promotes safer driving habits and contributes to overall road safety.

In contrast, maintaining only one car length may not provide sufficient space at higher speeds. Tailgating is dangerous and creates a risk for accidents, as it does not allow enough time or space to react appropriately. Using high beams is generally not suitable when following another vehicle, as it can blind the driver ahead and creates a dangerous driving situation. Hence, keeping a safe following distance based on speed is the most effective practice for ensuring safety on the road.