Bruce writes:
The road network of the area is a solid jam when Westfield closes. IMO the
jam should be kept inside the car parks so it doesn't bother anyone else.
Since the capacity of the road network is known, allowing cars out of
Westfield too quickly seems pointless and avoidable.

I understand where you are coming from, but the carbon monoxide levels
in the Westfield car park would not be at all pleasant.

So the problem would be self-correcting!

-Miles

--
Acquaintance, n. A person whom we know well enough to borrow from, but not
well enough to lend to.