What does a red X signal indicate?

A red X signal is a clear indication that you cannot use the lane that it is displayed in. This signal is commonly used on overhead lane control signs, especially in situations like reversible lane systems or areas where lane usage changes due to traffic conditions. The primary purpose of the red X is to ensure the safety of all drivers by preventing use of lanes that may be closed for construction, accidents, or when they are designated for other purposes, such as emergency vehicles. It is crucial for drivers to follow this signal to maintain traffic flow and prevent collisions.