What are the appropriate distances for placing warning devices on an undivided highway?

The appropriate distances for placing warning devices on an undivided highway are crucial for ensuring safety and visibility around a roadside incident or hazard. The correct answer, which specifies distances of 10 feet, 100 feet, and 100 feet, aligns with established guidelines for emergency situations.

The 10-foot distance is pertinent for placing a warning device directly near the vehicle to alert approaching traffic of an immediate hazard. This close placement helps ensure that drivers are quickly and effectively alerted to the situation.

The further distances of 100 feet provide adequate space to give oncoming drivers sufficient time to react to the warning device and adjust their speed or change lanes if necessary. This spacing helps prevent secondary accidents and increases safety for both the drivers and the individuals involved in the roadside incident or hazard.

Overall, these distances are designed to maximize visibility and allow for optimal driver response, reducing the potential for accidents in the vicinity of parked or disabled vehicles on the highway.