And on the link there is no mention of sleeping only parking overnight and my original question still stands. Has the no sleeping sign at that car park been removed.
If you read the link
Ryedale District Council - Council car parks It says it all.
Instructions, terms and conditions for use of the car park
Instructions
Bays marked for use by the disabled are for the exclusive use of vehicles displaying a disabled badge
Vehicles displaying a disabled badge are not exempt from the payment of the appropriate charge
Motorcyclists are not exempt from payment of the appropriate car park charges
A valid ticket or permit must be displayed at all times
All vehicles must be parked wholly within a marked bay.
All vehicles using the car park must conform to all signs and directional arrows
A separate ticket must be purchased for trailers and caravans
Conditions of Use
No sleeping, cooking, camping or lighting of fires
No servicing or washing of vehicles
No advertising or business use
No deposit of litter or other substances
No unnecessary use of horns or sirens
No threatening or abusive conduct
No engines to run while parked
Motorhomes are welcome on the car parks provided they are parked wholly within a bay. This may mean parking in two adjacent bays, for which two pay and display tickets are required, or parking in a coach / HGV bay, for which the appropriate charge must be paid.
A separate pay and display ticket is required for a trailer or caravan.