[hinkley]

Seattle, for anyone who hasn't lived there, has a set of folding barricades marked 'No Parking' with a blank space to put dates and times. I believe you can even go to the city and borrow a set yourself for things like sidewalk repairs, taking down a tree, moving vans, or having a forklift show up to move something into your yard, though these seem to go out pretty close to the event whereas I saw city ones show up two weeks before something major.

From a smaller data sample, parts of Oregon also do this as well.

[paleotrope]

It's a pretty normal thing here in Massachusetts that you can get some placards to post on the street for when people are bringing in moving vans and whatnot. I believe you get these from the town you live in.