Motorists are being advised to be careful if they’re out and about on the roads as the icy weather conditions continue.
The first snow of the winter fell across Northern Ireland on Tuesday, bringing disruption to traffic and travel.
A Met Office yellow warning for ice remains in place until 11am on Wednesday.
Further wintry showers fell overnight and temperatures remain sub zero with a risk of snow, frost and ice on many roads.
The Roads Service said salting of the network began on Tuesday afternoon and snow ploughs were deployed “as necessary”.
They added: “Salt wash-off remains a risk and road users should be aware that even when salting has been undertaken ice-free roads cannot be guaranteed.
“Road users should exercise caution when travelling on all roads this morning.”