There are certain spots around a commercial truck where the driver cannot see your vehicle. This includes:
Within 20 feet of the front of the truck
Anywhere behind the driver’s door in the lane to the left of the truck
Within 30 feet of the trailer
Anywhere within two lanes of the right side of the cab and trailer
These areas are called no zones, which means you should always try to avoid them. If you find yourself in a blind spot, change lanes, slow down, or speed up (without exceeding the posted limit), to get to a place where the truck driver can see you.