When flares are necessary around a truck, where should the other two be placed?

When flares are necessary around a truck to provide warning to oncoming traffic, they should be placed 100 feet to the front and rear of the vehicle. This distance is established as a standard to create a safe buffer zone, ensuring that drivers have ample time to react to the presence of the stopped commercial vehicle. By placing the flares at this distance, it heightens visibility for approaching vehicles and helps to prevent accidents.

The choice of 100 feet strikes a balance between being far enough away to alert drivers while still being practical for the setup around the truck. Placing flares too close could lead to confusion or make them less effective, while positioning them at greater distances might lessen their visibility and impact. Sticking to the 100-foot guideline ensures that they provide maximum safety out on the road.