Moray Council has stressed its booking system for recycling centres will remain in force for the “foreseeable” future.
The authority introduced the 30-minute slots as part of changes to get sites open again last month after they were closed due to the coronavirus lockdown.
However, concerns have been raised in recent days that the dumps are predominantly empty while customers who arrive without a booking are prevented from entering, even when there are no other vehicles inside.
Moray Council has stressed the system, which is designed to limit the risk of the virus spreading, is continuing to work well and would remain under review to establish whether changes are needed.
A spokeswoman said: “We don’t have any capacity at Chanonry in Elgin to increase the number of slots.
“There’s a maximum of three vehicles permitted on site at one time and if there were too many turning up or waiting to get in then we’d see traffic management issues with queues building up.
“We’ll be keeping the booking system in place for the foreseeable but, again, continuing to review and make any improvement we can for residents.”
Aberdeenshire Council’s booking system for recycling centres also remains in force. However, neither Highland Council or Aberdeen City Council chose to implement similar schemes when their sites opened again.