Which movement involves the vehicle rotating about a vertical axis, causing the front and rear to move left or right?

Which movement involves the vehicle rotating about a vertical axis, causing the front and rear to move left or right?

• A. Pitch
• B. Yaw
• C. Roll
• D. Horizontal

Answer: (B)

Yaw is rotation about a vertical axis, so the vehicle’s front and rear swing left or right while the vehicle’s overall height remains the same. This motion changes the vehicle’s heading without tipping the nose up or down or tilting to the side. Pitch would involve the nose moving up or down around a horizontal axis, and roll would be a tilt to one side around the front-to-back axis. Horizontal isn’t a defined rotational axis for this kind of vehicle movement. So the described movement best fits yaw.