Updated May 16, 2009
One thing Europe certainly has done better than the United States is make its ambulances brighter and easier to see. The crews wear much brighter clothing, too. California now has a law to make emergency crews easier to see, but it didn't go into effect until 2008.
My favorite is the use of the checkerboard to break up the color. I think that does more than any other color combination could do.
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