When the image of an object is erect but is inverted in the lateral side it is called lateral inversion ie the left side comes to the right and the right comes to the left.
For example, the word AMBULANCE is painted left-right inverted on the ambulance so that when the driver of a vehicle in front looks into his rear-view mirror, he can make out the word AMBULANCE quickly and give way. As shown in the figure below.
