David Boyles from the Northern Ireland Approved Instructors Council said he had concerns about the “finer” details of what instructors will be expected to do.
He told Stormont’s infrastructure committee that the council had requested seminars from the Driver and Vehicle Agency (DVA) to explain how the system will work in practice.
“But at this present moment in time, no dates have been set,” added Boyles.
He told assembly members (MLAs) that the council only learned that the changes were being introduced when they were made public by the minister in a news announcement in January.
Asked if he thought the proposed timeframe for putting the changes in place was reasonable, Boyles said it depends on how quickly information is released.
“As long as instructors are going to be informed with all aspects of GDL (graduated driver licensing), what is expected of the instructor, the pupil and the parents’ side.
“If we get all that and can get that out to the industry… there’s a slim possibility instructors could be ready for 1 October.”