Scan – constantly scan the road ahead, including the cross streets, approaching traffic, potholes or debris and private drives. All of these could present a potential hazard.
Identify – what that potential hazard may be.
Predict – what that potential hazard is going to do. Is it a vehicle that is approaching from a private drive and may cause you to change lanes. Is it a child with a ball that could come out into the road and cause you to take evasive maneuvers. You need to predict the what ifs.
Decide - When you predict the potential hazard then decide what maneuver you will take if it happens.
Execute – If the hazard occurs, you can execute your maneuver because you have already identified the hazard, predicted what it would do and decided on the maneuver, the execution is immediate.