All trucks and buses have

Large vehicles like trucks have large blind spots, called No-Zones. No-Zones exist to the front, sides, and rear of the large vehicle. A car traveling in a No-Zone may be completely hidden from the truck driver's view. The truck's side mirrors provide only small arcs of visibility down the sides of the truck. It is impossible to always avoid a truck's No-Zones, but don't remain in its No-Zones any longer than absolutely necessary.