Where should warning devices be placed on a four-lane divided highway?

On a four-lane divided highway, warning devices must be placed at specific distances to ensure the safety of both the vehicle operator and other road users. The correct answer outlines the appropriate spacing of these devices.

The practice is to set up warning devices in a way that gives adequate notice to drivers traveling at higher speeds. By placing devices 10 feet from the edge of your vehicle, 100 feet behind it, and 200 feet away from the vehicle, it helps to alert approaching traffic well in advance, allowing them ample time to react to the situation.

This systematic placement of warning devices is critical on busy highways, where the reaction time of drivers may be limited due to higher speeds. Knowing and applying these distances contributes to safer roadside conditions, thereby reducing the risk of secondary accidents due to unexpected situations.