No-Zones: Truck Blind Spots
Big trucks have large blind spots, called “no-zones,” on all four sides. Many crashes between cars and trucks happen when a car is hidden in one of them. Truck drivers need to manage them, and every other driver, cyclist and pedestrian should know where they are.
- Truck drivers
- All drivers
- Cyclists & pedestrians
The four no-zones
| Zone | Where it is |
|---|---|
| Front | Directly in front of the cab. A tall cab hides small cars and people close to the bumper. |
| Rear | Directly behind the trailer, for a long distance. The driver has no rear window. |
| Left side | Beside the cab and trailer, behind the driver’s door. |
| Right side | The largest: along the passenger side, often across more than one lane, from the cab back along the trailer. |
A simple rule for other drivers: if you can’t see the truck driver in the truck’s side mirror, the driver can’t see you.
The right-turn squeeze
Big trucks often swing left to make a right turn. Cars, cyclists and scooters that slip into the gap on the right can be crushed as the trailer cuts the corner. Truck drivers should keep the trailer close to the curb and check the right mirror constantly. Everyone else should never pass a turning truck on the right.
For truck drivers
- Adjust flat and convex mirrors before every trip, and keep them clean.
- Scan mirrors every few seconds, and before every lane change, turn and stop.
- Signal early and change lanes slowly so hidden vehicles can react.
- Use camera and blind-spot warning systems if equipped, but don’t rely on them alone.
- In cities, watch for pedestrians and cyclists close to the front bumper before pulling away from a stop. See Cars & Everyday Driving.
For car drivers
- Don’t linger beside a truck; pass quickly and safely, preferably on the left.
- Don’t cut in front of a truck. Wait until you can see the whole cab in your rearview mirror before moving over.
- Stay far enough back that you can see the truck’s mirrors.
- Give trucks room to turn; stop behind the line at intersections.
- Remember that trucks need much more distance to stop.
For cyclists and pedestrians
- Never ride or walk alongside a truck at an intersection.
- Make eye contact with the driver before crossing in front of a stopped truck.
- Don’t walk behind a truck that might back up.
Standards & references
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