Defensive driving means "always expect the unexpected." The first step in driving defensively is to wear the seat belt. See Seat Belts.
Anticipate what they might do and be ready.
Distracted Driving
Drunk Driving#PIC5492B: Diagnostic Tip: Diagnosing Vehicles with OnStar DTC B101D-37 - (Oct 4, 2013)
Subject:Diagnostic Tip: Diagnosing Vehicles with OnStar DTC B101D-37Models: 2011-2014 GM Passenger Cars & Light Duty Trucks with OnStar (RPO UE1) This PI was superseded to update model year. Please discard PIC5492A.The following diagnosis might be helpful if the vehicle exhibits the symptom(s) d ...