If your large vehicle becomes disabled on a two-way highway, how far ahead and behind should the warning devices be placed?

Answer: C — 60 m ahead and 60 m behind

Warning devices should be placed 60 meters (197 feet) ahead and behind your disabled vehicle on a two-way highway. This ensures that other drivers have enough time to react and slow down when approaching your vehicle. Placing the warning devices too close or too far may not give other drivers enough time to safely react, increasing the chances of an accident.