NI traffic alerts: ‘Significant’ delays in Belfast after rush hour M1 crash

This has since been cleared 

There has been a multiple-vehicle road traffic collision on the M1 leaving Belfast, just past junction 3 Blacks Road. Lanes 1 and 2 are blocked and only passable via the hard shoulder. 
Road users are advised to seek an alternative route if possible.
 

Update:  Clifton Street, North Belfast is closed in both directions between Carlisle Circus and North Queen Street following a road traffic collision this morning. Both the on slip and off slip onto the Westlink at Clifton Street are also closed and motorists should seek alternative routes.

The PSNI has also issued a warning to motorists:

“Please take extra care on the roads this morning especially on those which may not have been gritted. Clear your windscreen of ice and snow before you set off and remember to slow down and increase the distance between you and the car ahead.”