Motorists are being urged to take care on slippy roads as a warning for ice remains in place across Northern Ireland.
The Met Office's yellow warning is valid until 11:00 GMT on Wednesday. It follows snowfall across large parts of Northern Ireland on Tuesday.
Roads that have been gritted are indicated on this map published by the Department for Infrastructure.
Four schools in County Antrim are closed:
- Carnalbanagh Primary School, near Glenarm
- Millquarter Primary School, Toomebridge
- Portglenone Primary School
- Riverside Special School, Antrim
The PSNI told motorists to lower their speed and be cautious when driving.
Information on any disruption to bus or train services can be found on the Translink website.
There has also been disruption to the midweek football schedule, with two cup finals postponed due to Tuesday's snowfall.
The Mid Ulster and North West Cup finals have both fallen foul of the weather.