Drivers from ride-booking service UberX have so far breached passenger transport rules in South Australia more than three dozen times, the State Government says.

Ride-booking services like Uber have been allowed to operate in the state since the start of July, after a review offered taxi drivers compensation and added a $1 levy to all metro trips.

Since the green light was given in April, 40 driver accreditations had been processed.

But Transport Minister Stephen Mullighan said some operators continued to work outside the Passenger Transport Act.

"So far, 38 instances of breaches have been detected, 10 expiations have been issued and 13 matters are pending consideration by the Passenger Transport Standards Committee," Mr Mullighan said.

"Compliance officers from the Department of Planning, Transport and Infrastructure are continuing to clamp down on these drivers."

Mr Mullighan said other drivers and vehicle owners had been operating without accreditation and could be prosecuted.

"There are now significant penalties in place," he said.

"A new maximum penalty of $15,000 will apply to breaches of the Act, such as driving vehicles which fail to meet safety standards, unaccredited drivers and unauthorised booking services.

"The Government is also working with the industry as a whole to ensure the transition to the new system is as smooth as possible."

UberX's presence in the Adelaide market has generated controversy since being announced, including significant opposition from the state's Taxi Council.

The service earlier threatened to abandon plans to operate because of what it said were prohibitive start-up costs of more than $700.

An Uber spokesperson said the company was now "working cooperatively with the Government on ensuring drivers are able to easily get through their new processes".

"[We] will continue to support our driver-partners as we do so."