Original: Parking outside the shops will be able to accommodate 9 vehicles in marked bays, which is the maximum number of vehicles our surveys have shown parked at any one time.
Simplified: The parking outside the shops will be able to accommodate 9 vehicles in marked bays which is the maximum number of vehicles our research has shown parked at any one time.
Simplified: Parking outside the shops will be able to hold 9 vehicles in marked bays, which is the maximum number of vehicles our surveys have shown parked at any one time.
Simplified: Parking outside the shops will allow 9 vehicles in marked bays, which is the maximum number of vehicles our surveys have shown parked at any one time.