Big Rigs | Truck veers off NSW motorway NEWS.com.au Truck veers off NSW motorway. A medical episode might have caused the driver of a B-double to swerve suddenly across a major NSW highway. A passing motorist videoed the moment the truck veered off the M1, near Morisset, smashing through a guardrail ... Video captures moment truck crashes through barrier and down embankment on M1 freeway Medical episode may have caused Morisset B-Double crash |