Answer:
When there are 5 or more vehicles in a line after you.
Step-by-step explanation:
On a road with two lanes traveling in opposite directions, slow-moving vehicles should pull over when safe to let others pass when there are 5 or more vehicles in a line after you. It is better to pull over when moving slowly on a two-lane road. Defensive driving prepares a driver from hazardous events that can cause collisions. It is necessary to be alert and defend yourself against all odds.