Glad is was a narrow escape instead of a full hit. While I too have settled on a version of your shout ("passing left"), I've learned to give people time to react. So, I shout louder and sooner.
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A conclusion is the place where you got tired of thinking. - S. Wright
Favorite rides in the stable: Indy Fab CJ Ti - Colnago MXL - S-Works Roubaix - Habanero Team Issue - Jamis Eclipse carbon/831