My wife was stopped by an Anaheim cop when she went past a bike lane closed sign in a freeway underpass. "Didn't you see that sign, You can't ride here. Go some other way." She pointed out that only the bike lane was closed and by the state Vehicle Code (note: not the motor vehicle code in Cal.) she has a right to use any public road she needs to use that is not specifically closed to bikes like some (not all) freeways. "Well be careful" he said and left her alone. That it was late at night and pitch black didn't bother either of them as she had one of my 35 watt homebrew lights on her bike. Check, no, memorize the references that Helmet Head gave earlier.