The crossword solution for the term REVERSAL AUTO is UEY, which stands for Unintended Excessive Yaw. Unintended Excessive Yaw is a phenomenon that occurs when a vehicle experiences a sudden change in direction due to a loss of traction or a sudden increase in speed. This can be caused by a variety of factors, including poor road conditions, driver error, or mechanical failure. In some cases, it can lead to serious accidents.