Incorrectly-reported penalty points have been removed from drivers' licences in 823 cases, primarily due to the absence of valid bylaws, The Irish Times has learned.
These cases apply to penalty points awarded following the payment of a fine and not to cases where the person chose to go to court.
Fine Gael has expressed concern that drivers across the State could have incorrectly-awarded penalty points on their licences.
Olivia Mitchell, Fine Gael transport spokeswoman, has raised questions over the 823 cases not applying to people who take their case to court.
"First, has any effort been made to contact individuals who are unaware that they have been incorrectly awarded penalty points?
"Second, and more seriously, why is there no automatic mechanism to remove points from the licences of those who have received double the points through the court system?
"Recent court decisions indicate that there are question marks over the legality of many special speed limits and suggest many hundreds of perfectly innocent drivers will have to return to the courts to have their penalty points expunged from the record."
Figures on removed penalty points come after a District Court judge threw out 152 prosecutions last week because of doubts over the legality of speed limits on the N11 dual-carriageway as it passes through Kilmacanogue, Co Wicklow.
It has also emerged that a protocol for removing points has only recently been developed after Ms Mitchell asked about what mechanisms were in place.
The penalty points system has been in place since late 2002.
The Government consulted with Attorney General Rory Brady, and he advised it to take steps to deal with errors.
The protocol, which was approved by the Office of the Attorney General, stipulates that any request for amendment must be certified by a Garda chief superintendent or the director of the District and Circuit Courts and be countersigned by an official of the Department of Transport of at least assistant principal rank.
In a separate response, Minister for Justice Michael McDowell said that a Garda chief superintendent can write to the Department of Transport in cases where the individual named on the notification to the Department of Transport was not the person who committed the offence, or where two notifications were issued in respect of the same offence.
A Garda spokesperson said any person with issues regarding penalty points could outline their case by writing to the Garda Fixed Penalty Points Office, 89/94 Capel Street, Dublin 7.