The Road Safety Authority has said driving in the wrong direction on motorways and roundabouts is now a daily occurrence.
The authority has issued new safety advice to drivers and urged some to take special lessons after an increase in serious or fatal incidents on the country's roads.
The Motorway Driving Booklet is aimed at helping drivers use motorways safely.
As part of its campaign, the RSA has also encouraged drivers unfamiliar with motorways or roundabouts to consider taking special lessons with an approved instructor to brush up on their skills.
Ireland's national road network has grown to 5,515km, which includes 1,187km of motorway network.
"This changing road environment may pose challenges for some drivers who have no previous experience of driving on a motorway," said RSA Chief Executive Noel Brett.
"It is very important that people understand the Rules of the Road when driving on motorways or using roundabouts."
