Learner drivers have been left without clear guidance about when they will be able to take their tests, driving instructors have said.
They say there has been “no communication” from the Driver and Vehicle Standards Agency (DVSA).
The DVSA, which is responsible for driving tests and approving driving instructors, has suspended tests until 20 June at the earliest, to help prevent the spread of coronavirus.
The Driving Instructors Association said it was concerned at a lack of information available for instructors and students.
A spokesman said: “Throughout this crisis there has been a disappointing lack of communication from the regulator.
“We’ve excused some of that in the earlier phase of this crisis as we are dealing with an unprecedented pandemic and every government agency is on the back foot to some degree in terms of issuing guidance.
“However, we are at a point now where guidance in crucial.”
He added: “If the regulator knows now that they are not in a position to resume testing at the end of this month, then communicate that to trainers and their pupils now.”
In a statement the DVSA said: “We understand how challenging the current situation is for the industry but our top priority is to stop the spread of coronavirus and keep everyone safe.
“We will continue to work closely with driving instructor associations on how and when we can resume driving tests and lessons in Wales and other parts of the UK.
“We’re keeping the situation under constant review, in line with UK and Welsh government guidance, and will provide further information as soon as we can.”