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#PI0574A: Missing OnStar Owner Kit Integration in Vehicle Owner Manual - (May 28, 2013)
Subject:Missing OnStar® Owner Kit Integration in Vehicle Owner ManualModels: 2012-2014 GM Passenger Cars and Light Duty Trucks This bulletin is being revised to include the 2013-2014 model year vehicles, updatethe covered models and the Recommendation/Instructions section. Please discard PI057 ...