The yaw angle refers to the rotation of an object around its vertical axis. In aviation and maritime contexts, it describes how much a vehicle is turned left or right from its forward direction. A positive yaw angle indicates a turn to the right, while a negative yaw angle indicates a turn to the left. In vehicles like cars and aircraft, maintaining the correct yaw angle is crucial for stability and control. Instruments such as the gyroscope or compass can help measure yaw angle, ensuring that operators can navigate accurately and safely.