Manitoba Class 3 Drivers Licence Practice Test

Larger vehicles travelling at high rates of speed create varying degrees of ________ that can be hazardous to smaller passenger vehicles.

1. Wind shear

2. Air turbulence

3. Gravity pull

4. Noise pollution

The correct answer is: Air turbulence

When larger vehicles, such as trucks or buses, travel at high speeds, they create air turbulence or "wind gusts" that can be dangerous for smaller passenger vehicles like cars or motorcycles. Wind shear, the sudden change of wind speed or direction, is not an appropriate term in this context as it refers to changes in weather patterns and not the direct impact of a large vehicle. Gravity pull is the force that keeps objects on the ground and does not apply to this situation. Noise pollution is the excessive or irritating noise caused by vehicles, but it is not a direct hazard to smaller passenger vehicles. Therefore, the best answer is air turbulence, as it accurately describes the physical phenomenon of gusts of air caused by larger vehicles at high speeds.