When an operator's left arm is bent at the elbow and pointing upward, it means the operator:

Instead of mechanical turn signals, operators may use hand signals to indicate turns or stops. If an operator's left arm is bent at the elbow and pointing upward, it means the operator plans to turn right or change lanes to the right.

• Plans to turn left.
• Is about to stop.
• Plans to turn right.
• Is about to slow down.