MOTORISTS are being urged to watch out for lethal black ice as the cold snap continues.
More snow and freezing temperatures are predicted to hit many parts of the country overnight.
Issuing a safety alert, the Road Safety Authority ( RSA ) appealed to road users to take extra because of snow, ice and frost expected overnight and tomorrow.
“Watch out for ‘black ice’. If the road looks polished or glossy it could be black ice one of winter's worst hazards,” the RSA added.
The worst conditions will be in northern areas, northern and eastern parts of Leinster and north Connacht.
Met Eireann forecast a cold night tonight with temperatures falling as low as -3 C in places with frost and icy patches forming under cloud breaks.
Sleet and snow showers will continue tomorrow morning with accumulations likely, especially on higher ground.
Drivers are also being warned to watch out for mist and fog.
The Met service said it will become very cold after dark .
More snow and sleet will move into Ulster and north Leinster bringing some accumulations of snow in places even at lower levels.
The snow showers will extend into Donegal later today.
The cold weather is expected to last into the weekend.
The RSA urged drivers to manoeuvre gently in snowy and icy conditions, to slow down and leave extra distance between the vehicle in front.