Maintaining a cushion of safety when operating an ambulance means:
A. remaining in the far right-hand lane when transporting a critical patient and refraining from passing other motorists on the left side.
B. driving at the posted speed limit, regardless of the patient's condition, and routinely using your lights and siren when driving on a freeway.
C. driving about 2 to 3 seconds behind any vehicles in front of you and exceeding the posted speed limit by no more than 20 to 25 mph.
D. keeping a safe distance between your ambulance and the vehicles in front of you and remaining aware of vehicles potentially hiding in your mirror's blind spots.