Highway driving theory.
Acceleration lane
Build speed to match freeway traffic.
Merge tip
Match speed; find gap; signal.
HOV lane
High-occupancy vehicle lane.
Exit only lane
Lane must leave freeway.
Tailgating
Following too closely — unsafe.
3-second rule
Space cushion timing method.
Blind spot
Area not seen in mirrors; shoulder check.
Lane discipline
Keep right except to pass (common).
Rubbernecking
Slowing to look at crashes — hazardous.
Work zone
Reduced speeds; fines often higher.
Runaway truck ramp
Emergency escape for brake failure.
Hydroplaning
Tires lose contact on water.
Night driving
Reduce speed; watch glare.
Rest breaks
Stop when drowsy.