What is meant by lateral inversion? Give an example to illustrateb its use in practice

What is meant by lateral inversion? Give an example to illustrateb its use in practice.

The phenomenon due to which left-hand side of an object appears as right-hand side of the object and vice versa is called lateral inversion.
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.