On a one-way highway, where should safety triangles be set?

Setting safety triangles for roadside emergencies is crucial for ensuring visibility and safety. When a vehicle is stopped on a one-way highway, placing the triangles effectively can help alert approaching drivers and reduce the risk of accidents.

The correct placement of safety triangles is at appropriate distances from the rear of the vehicle. In this case, positioning them at 10, 100, and 200 feet provides a proactive alert system for drivers who are approaching the scene. The closest triangle at 10 feet is visible to drivers who are immediately upon the vehicle, helping them to take caution. The second triangle at 100 feet gives warning to traffic further back, while the third triangle at 200 feet acts as an additional warning for vehicles still farther away. This graduated approach enhances visibility along the road, allowing adequate time for drivers to respond to the hazard.

Other options suggest varying distances that may not provide the same level of warning effectiveness, resulting in insufficient time for approaching vehicles to react, thereby potentially increasing the risk of additional accidents.