They aren't. They are curved slightly because they are trying to orientate themselves. It's the trimming and maintenance that makes it look less pronounced.
My father used to drive a taxi in San Francisco many decades ago, he nearly got killed by a run away garbage truck at 1:30 am on one of these insane ass hills, his taxi did not survive and he got his foot crushed by the truck, the bad thing was if the truck had been three minutes sooner or my father later a mother and newborn would've been killed by it.
look at the other buildings.
And this is normal SF. There are some streets... Just watch someone skateboard down height street and make it past the first turn without a helmet..... cuz that's a one off.
And this is normal SF. There are some streets... Just watch someone skateboard down height street and make it past the first turn without a helmet..... cuz that's a one off.