One man has been arrested and investigations against a number of others are continuing after the Cork to Mallow road was used for a harness race on Saturday.
A video of part of the race, on the main Cork to Mallow road, has been uploaded to YouTube and to a number of other social media websites.
The road is one of the busiest commuter corridors in the country, handling an average of more than 15,000 vehicles per day.
At around 7am last Saturday morning, part of the road was turned into a race track involving two horses pulling distinctive two-wheeled sulky carts and riders.
The dangers were obvious. At one stage, four vehicles lined up across the road. At another, one of a number of following vehicles narrowly missed an on-coming articulated lorry and trailer.
Several cars travelling in the opposite direction to the race had to drive onto the hard shoulder, as other drivers overtook the riders.
Gardaí were contacted and the race was stopped. They say a full investigation is now under way.
Gardaí are appealing to motorists who were on the Cork/Mallow between 7am and 8am last Saturday to contact them.
They say they have identified a number of the people involved and say they are satisfied they are members of the Traveller community.
