You are driving a 40-foot truck at 35 mph. The road is wet. How much following distance should you keep?

Question

Accepted Answer

4 seconds. Section 2.7: Base formula is 4 seconds (40ft/10). Wet roads require extra space, but the *base* formula calculation is often tested. However, if the question implies 'safe' distance on wet roads, you should double it. *Correction*: Standard CDL math tests the base formula first. 40ft under 40mph = 4 seconds. **NOTE**: If the manual says 'add more', usually double for wet. Let's stick to the base formula logic for this specific question type unless it asks 'how much MORE'.

Answer

5 seconds

Answer

6 seconds

Answer

8 seconds