Motorists are being urged to remain alert for deer crossing roads as the autumn breeding season gets underway.
The Irish Deer Commission says the rut, which runs from late September into early November, can increase the risk of collisions as deer move in search of mates or are displaced by other animals.
Drivers should take particular care at dawn and dusk, when deer are most active, especially near woodland and mountainous areas.
The commission advises reducing speed where warning signs are displayed and being prepared to stop.
It warns against swerving, which can bring a vehicle into the path of oncoming traffic or other obstacles.
Drivers who encounter deer should dip their headlights, as a full beam may cause an animal to freeze. If one deer crosses, others may follow.
The commission also advises motorists not to approach an injured deer.
Anyone involved in a collision with a deer, or who encounters an injured animal following a road accident, should contact local Gardaí.
