For a start they angle parked to the road and half way up the sidewalk (sorry, pavement) as well which makes it about possible for a stroller to get through but definitely not a wheelchair.
And to find – as a bonus – that the signs are damaged and half driven over suggesting that it isn’t just one police car that has done this but many. The signs are plastic so maybe the police know that the signs won’t damage the cars. The markers must be placed there to stop cars encroaching even further on the sidewalk. But encroach they do. And they probably don’t get a ticket!
PS I’m writing about this after I have left the US. Just in case!