All of the motorcycles in the picture below are invisible to the driver of this truck.
Never cut in front of a truck. After you pass, make sure the entire truck appears in your rearview mirror before returning to the lane. Trucks need additional space because they take twice as long to stop as a passenger car. If you move into that space and brake suddenly, the truck may not have enough time to stop safely.
Always leave at least four car lengths between the back of your car and the front of any large truck you pass.
A severe collision can result when a car hits the rear end of a truck. Large trucks and the trailers they pull do not have impact-absorbing bumpers. Additionally, the truck's metal bumpers may not align with those of your car.
Leaving 20-25 car lengths between your vehicle and a truck will provide the space you'll need to stop safely during an emergency or traffic slow down. That following distance will also allow you to see ahead of the truck and react to any change in driving conditions.
Stay out of the "No Zone"
"No Zones" are danger areas around large trucks in which crashes are more likely to occur. Because of a truck's size, there are four large blind spots (see photo above) where cars disappear from the driver's view. Passenger car drivers should avoid lingering in these areas whenever possible.
Following a truck too closely obscures your view of the road in front of you. The driver of the truck is also unable to see your vehicle. If you can't see the driver in the truck's side mirror, the driver can't see you or your vehicle.