What is the recommended following distance in seconds on a dry road?

The recommended following distance on a dry road is usually two seconds. This guideline helps maintain a safe distance between vehicles, allowing sufficient time to react to sudden changes in traffic conditions. This two-second rule means that when the vehicle ahead passes a specific reference point, you should be able to count "one thousand and one, one thousand and two" before your vehicle reaches that same point. This practice helps ensure that you have adequate space in case the vehicle in front of you stops quickly or slows down unexpectedly.

Maintaining a two-second gap is particularly effective on dry roads because it takes into account good traction conditions, allowing for shorter stopping distances. It is a standard that helps drivers stay focused and prepared for unforeseen circumstances, promoting overall road safety by reducing the risk of collisions. For situations such as inclement weather, longer following distances are advisable, but under ideal conditions, two seconds strikes a balance between safety and practicality in maintaining traffic flow.

The other options suggest distances that are either too short or too long for general driving conditions. A one-second gap is insufficient for adequate reaction time, while three and four seconds might be more appropriate for hazardous conditions but are excessive on a dry road when visibility and road conditions are favorable.