Service on part of Line 6 Finch West has been stopped due to a collision between the LRT and a vehicle.
The TTC says there is currently no service between Norfinch Oakdale and Finch West due to the crash just after 4 p.m.
Shuttle buses are on the way to operate between the two stations.
No injuries have been reported.
This is the second crash between an LRT and a vehicle in as many days.