Another passive marking form is the word ambulance spelled out in reverse on the front of the vehicle. This enables drivers of other vehicles to more easily identify an approaching ambulance in their rear view mirrors.
看了看wikipedia上的图片，附图是英国的ambulance，美国的车头字也是反的。
法国、德国的车不叫ambulance，德国的车头上字没有反写。
挪威的叫做ambulanse，没反写。
[sign]my name is 淘气[/sign]
