Question

why the ward AMBULANCE written in front of the vehicle currying patient in a strange manner​

Answer 1

$\mathfrak{The\:Answer\:is}$

The word AMBULANCE is written upside-down so that when the driver of any vehicle infront of the ambulance sees his rear camera, he will see the word AMBULANCE in the correct manner. (Rear mirrors turn the image by 180 degree)

$\boxed{Hope\:This\:Helps}$

Answer 2

the word ambulance written on the ambulance van is a little bit strange that is is it is is written in the reverseform which which makes other drivers to understand the word clearly in there side mirror of driving..

this makes easy for the driver before or front of the the ambulance standing on the road.

from this others understands that in front of our some ambulance is going and any emergency case would be there therefore to save that person or to help them to save that particular guy they gives the way for the ambulance to travel forward for the hospital..

hope it will help you