As with many things, Berkeley has adopted a pretty laid back attitude. If you do an Idaho stop here, odds of your getting ticketed are very slight. Not zero, but very slight. Heck, if you just blow through a stop sign with nary a glance, you're unlikely to get a ticket. I believe it is the official policy of the Democratic People's Republic* handed down by the Politburo* to have the Police Department go with the Idaho stop, although it isn't phrased that way.
* I use these terms as a gentle jibe, not as a condemnation or declaration of political belief. Berkeley government has some policies I consider quirky, mostly okay, some less so. On balance, I like it here but recognize the, well, quirkiness of the place and the sometimes weird results. The city and the people are pretty bike-tolerant, even bike-friendly, however, so that is a big plus as far as I am concerned.
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