Why Trucks Are Different
Large trucks and commercial vehicles behave very differently from passenger cars. They take longer to stop, have much larger blind spots, make wide turns, and create wind turbulence when passing. Understanding these differences is important for both safety and the DMV test.
Truck Blind Spots (No Zones)
Trucks have four large blind spots called No Zones where the driver cannot see you. The front No Zone extends about 20 feet in front of the truck. The rear No Zone extends about 30 feet behind the truck. The left No Zone covers one lane to the left. The right No Zone covers two lanes to the right. A good rule of thumb: if you cannot see the truck driver in their side mirror, they cannot see you.
Following a Truck
Increase your following distance when behind a truck. You need at least 4 seconds of following distance instead of the usual 3 seconds. This gives you more time to react and a better view of the road ahead.
Passing a Truck
Always pass trucks on the left side where the blind spot is smaller. Signal early and pass quickly. Do not linger alongside a truck. After passing, do not cut back in front of the truck too soon. Make sure you can see the entire truck in your rearview mirror before merging back.
Trucks Making Wide Turns
Large trucks need extra space to turn right. They may swing wide to the left before turning right. Never try to squeeze between a turning truck and the curb. If you see a truck signaling a right turn, give it plenty of space.
DMV Test Questions
Common truck-related test questions cover blind spots, safe following distance, passing rules, and how to react when a truck is making a wide turn. Remember the No Zones and the rule about seeing the driver in their mirror.