Anytime you pass another vehicle, you must do so with great care. It is one of the most dangerous maneuvers on the road.
When you are passing a large truck, there is an added risk that the driver will not see you. To safely move past the vehicle, the Federal Motor Carrier Safety Administration explains you must ensure the driver sees you and knows you intend to pass.
One of the reasons passing a truck is risky is the large blind spots a big truck has. The areas around the truck that the driver cannot see cover all sides. A good rule to follow is that if you cannot see the driver in the side mirror, then he or she cannot see you. If you are not able to see the driver, then you should note you are in a blind spot. Never ride in this area. Make sure that you move past the vehicle quickly.
Make sure you have some contact with the driver if possible. Making eye contact is ideal. You also need to be sure you follow all road laws for passing. Do not get too close to the vehicle before you move into the other lane. Pay attention to oncoming traffic. Always use your signals as well. Move swiftly past the truck, and once you move in front of the vehicle, do not get back over into the lane until you can see the driver in your rearview mirror.
The biggest risk when passing a large truck is the driver will not know you are there and he or she will begin moving into the lane you are in. By ensuring you safely pass and using good practices, you can help prevent this from happening.