According to data acquired by The Daily Advertiser from Services NSW, this year 1,200 driver tests were cancelled in Wagga, Tumut, Narrandera, Griffith, Hay and Leeton.

With tests to resume as normal on July 1, driving instructors say they have been left with many frustrated clients awaiting confirmation of their test dates.

"About three weeks ago we were told that the priority would be given to those who had booked prior [to the COVID-19 shutdown] and those who need their licences for work purposes," said Glen Gaudron of Wagga's Able Driving.

The RMS has confirmed it will be looking to increase load capacity in its Services NSW centres to address the backlog.

On a regular week, 4800 driving tests can be performed, but the RMS is looking to increase that to 6500 per week going forward.

Having been a driving instructor for over two decades now, Mr Gaudron has only ever seen the RMS accrue a significant backlog once before.

"Last time, they had to start testing on Saturdays and Sundays to get through them," Mr Gaudron said.

"That was about four or five years ago. It's only happened that once that I know of in the 20-odd years I've been doing it."

But, Adam Drosd of Wagga Drive Smart has questioned whether the backlog will ever truly be cleared.

"This is never going to go away, if you've got a four-month backlog with people still waiting to book, you'll never catch up," Mr Drosd said.

Currently, Mr Drosd said he had four students who are awaiting their tests, one who booked two-and-a-half weeks ago and is still waiting "to hear back on if it's happening at all".

"Some are very frustrated, but they can't do anything about it, no-one can," Mr Drosd said.

"I'm just telling them to be patient."

It is the same advice Mr Gaudron has offered to his students, though during the past several months of restrictions, he has seen very few young drivers.

"I think since they haven't been able to book a test, they've dropped off [lessons] a bit," he said.

"There's not much point going ahead with lessons if they've got their hours up. Those that have been a bit disappointed."

But those who did continue to learn with him, he encouraged to be patient and focus on perfecting their driving while they wait for their test to be confirmed.

"We'll get under it, one way or another, no-one will miss out," Mr Gaudron said.