Prepare survival equipment, particularly in winter - see Driver's Handbook. Prepare accident equipment, for example, first-aid kit, flashlight. There are limits to how fast you can process information, how fast you can turn the wheel or get on or off the brakes. To be good at dealing with emergencies requires hands-on practice. Do not expect to get it right the first time.
Vehicles vary enormously in their responses to emergency input.
At the Scene of an Accident Stop. Protect the scene. Assist the injured. Call the police. Check for witnesses.