Perhaps they should just saw off the bollard in the middle of the entrance and be done with it:

Some backstory may be of interest.
The Smell of Molten Projects in the Morning
Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.
Who’d’a thunk it?
Perhaps they should just saw off the bollard in the middle of the entrance and be done with it:

Some backstory may be of interest.
I spotted a defunct paper wasp (or, more likely, a hornet) nest on a lawn under a tree:
Call it basketball sized, large enough to raise plenty of wasps:
I vastly prefer encountering those critters after their season is over …
We spotted a pile of room safes in one of the motel stairwells:
Judging from what we found in the room, it’s out with the old and in with the new:

Too bad about the mounting pedestal, though: same size, different orientation.
Something unexpected always lurks in the datasheet …
One day, long ago, this tree grew in a certain bedroom:
And then a flower appeared in the laundry room:
Much to our delight, she asked for forgiveness, not permission … which was, of course, granted immediately.
It seems the DCW&WA SUV makes regular trips through the “No Motor Vehicles” bike access:

If it’s not them, then it’s somebody following their example.
Just because you can do something, doesn’t mean you should … but, of course, the ordinary rules apply only to little people, not public servants.
Someone in the bike advocacy apparat once told me I’m the most cynical, bitter person they’d ever met, at least on the subject of getting along with public servants. As I see it, I came by my attitude honestly.
The rodents around here have great trouble with outdoor bowls, but this trio ended in a deep six gallon bucket next to the garage workbench:
Even though mice don’t seem like cuddly creatures, they ended their days snuggled together; we’ll just ignore the cannibalism thing.
Heck of a way to go, even for rodents. I renewed the steel wool blocking a gap in the garage door.
Our Compact Edition of the OED doesn’t get much use these days, but Mary needed a magnifier for a class on quilt judging and the OED has one that seemed just about right:
The magnifier comes in a removable box fitted neatly into the drawer, revealing a surprise underneath:

A detail view:

It’s a plastic ant from a bag in the Kiddie Surplus box my Shop Assistant grew up with and a pleasant reminder of long-ago days, carefully placed where only I’d ever see it.
Of course, it’s still there …