I came across this amended STOP sign the other day and the sentiment made me smile.
When we first moved to the U.S. we had to get used to a new way of driving, especially me as I'd never passed my driving test in the UK. Aside from the wonderful 'right turn on red rule' (which we love), we were slightly more perplexed by all the STOP signs on every street.
There were 2-way stops and 4-way stops (sometimes called All-way stop signs), at which you had to stop every time (not just if there was traffic).
In residential areas it can get a bit tedious stopping all the time and remembering who goes first. However, now that I've been a Californian motorist for almost ten months, I can say that in time you do get used to them.
I just wish that ending all war was as easy as changing a letter on a street sign though...