This sign seemed unusual to me
Is it me, or does this just seem unnecessarily verbose? I can't remember ever seeing a sign like this before. Better yet, the actual phrase "signals not working ahead" comes back with zero hits on both Bing and Google as I'm writing this. That suggests it's not in the MUTCD.
Naturally, it's smack in the middle of the (unmarked) bike lane. There were three of these signs in a row which made life very interesting for travelers of both two and four wheeled persuasions.
Oh, and finally, the lights were working just fine.