One of the most dangerous things Americans do every day is get behind the wheel of an automobile. There are many potential dangers that can end up with you being in an accident. 
 
To reduce risk, it is important to understand not only the laws of the road but also the vehicles that use them. Most people are familiar with how passenger vehicles work, but not as many people are familiar with large commercial vehicles like buses or semi trucks.

According to the Federal Motor Carrier Safety Administration, the blind spots for semi trucks are much larger than those for passenger vehicles. 

How big are a truck’s blind spots? 

The Federal Motor Carrier Safety Administration estimates the blind spot in front of a truck extends 20 feet, while the blind spot behind a truck is 30 feet. The blind spot on the left side of the truck encompasses an entire car lane. On the right side of the truck, the blind spot extends for two car lanes. 
 
Here’s a tip: if you cannot see the side view mirrors on a semi truck, it is likely the driver cannot see you. Try to stay out of the blind spots around a semi truck. This is especially important when trying to pass.  

How should I pass a semi truck?

It is important to give trucks as much room as possible, keeping in mind the large blind spots. You also want to always pass a truck on the left side, as the blind spot on the right side is much larger.