Once Line 5 opens, it will get busier with all the construction getting over.
From
link. This is with the construction.
Busiest Bus and Streetcar Routes
(Estimated daily usage on average business day)
504 King (streetcar) … 84,000
501 Queen (streetcar) … 55,100
36 Finch West (bus) … 47,300
52 Lawrence West (bus) … 43,900
510 Spadina (streetcar) … 40,000
506 Carlton (streetcar) ... 39,000
32 Eglinton West (bus) … 38,500
512 St Clair (streetcar) ... 35,200
54 Lawrence East (bus) … 33,300
505 Dundas (streetcar) … 32,400