The collision occurred country-bound near the Applegreen service station near Dunmurry.
Emergency services are currently responding to the incident.
The PSNI has advised motorists to avoid the area if possible.
M1 collision causing major delays
A road traffic collision on the M1 is causing long traffic delays.
By The Newsroom
Thursday, 15th November 2018, 3:38 pm
Updated Thursday, 15th November 2018, 4:41 pm
