On a slippery expressway, what minimum following distance is recommended?

• A. At least 4 seconds
• B. 2 seconds
• C. 6 seconds
• D. No specific distance

Answer: (A)

On slippery roads, you need more room to stop because tires grip less and braking distances grow. Instead of a fixed feet value, you think in terms of time to react and brake. Four seconds is the minimum you should aim for on a slick expressway. This gives you enough space to slow down gradually if the car ahead brakes suddenly, even at highway speeds. If you’re going faster, the actual distance covered in four seconds increases, but the time gap remains the key safety margin. You should increase this gap in worse weather, low visibility, or when following large vehicles. Two seconds is not enough on slick surfaces, while six seconds is more conservative than the minimum. Saying there’s no specific distance isn’t correct because a standard minimum distance is recommended for such conditions.