For some might wonder, why the letter “AMBULANCE” “FIRE” “POLICE” located in front of ambulance, firebrigade, police car is reverse in strange arrangement. But the one located at behind (if got) is normal.
The reason is simple, it is to let driver to identify these word instantly when they are looking at the rear mirror or side mirror inside the car. So that can response faster to these emergency vehicles.
Just a simple sharing, happy reading =)