The appropriate distance to place warning devices when your vehicle is stopped on the road is crucial for ensuring safety for both the driver and other road users. The choice indicating 10 feet, 100 feet, and 200 feet is correct because it follows established guidelines for emergency situations where vehicles may be disabled or stopped unexpectedly.
Placing a warning device, such as a reflective triangle or flares, at 10 feet from the rear of the vehicle gives immediate visibility to any approaching traffic. The subsequent placement at 100 feet further back provides an extended warning to drivers behind, allowing them ample time to react and maneuver safely. Finally, positioning a warning device at 200 feet ensures that vehicles further away are alerted to the situation, which is particularly important on highways or roads where speeds are higher. This multi-tiered approach to warning device placement optimizes safety by giving adequate notice to all approaching drivers, allowing them to adjust their speed and lane position in advance.
Other options do not reflect the same level of detailed safety measures and might not provide enough distance for adequate warning, especially on faster roads where reaction time is critical.