No Tall Cars Allowed… But Why?

I was recently previewing a property in Noe Valley and saw the rather curious photo that you see below. It’s located on a residential street, on a hill, but not a particularly steep hill. So I’m hoping someone can explain to me why parking a vehicle over 6 feet high is prohibited on this particular block?

No SUVs need apply?

Did the neighbors rally city hall for a street sign so that the view from their front windows wouldn’t be blocked? Was there once an industrial company or business in the neighborhood that had really big vehicles parked on the street? Was it once a popular spot for tourist buses to park?

I’ve seen plenty of goofy street signs in San Francisco, including the current changes to street sign lettering in San Francisco. But I don’t think I’ve ever seen a street sign that prohibits the parking of a moderately tall vehicle on a residential street.

In case you’re curious – or it helps us to track down an answer –  the block in question is the 900 block of Sanchez Street in Noe Valley.

And as long as I’m asking, does this mean that the little go-carts of parking-ticket doom carry tape measures with them? And what’s the fine for parking a 6’1″ vehicle in a no parking 6′ 0″ vehicles zone? If you take some air out of your tires can you get away with it?

It’s a completely random and strange street sign… so what are your thoughts? What could possibly lead the city to decide that within a one block area tall vehicles can’t be parked. And not just not parked temporarily – it’s a permanent 24/7 ban on any vehicle that is over six feet high…

So what are your thoughts? Suggestions about how I could track down the origin of this street sign? And tips or leads that you leave in the comments would be greatly appreciated!