- Line 1: Confederation Line
- Line 2: Trillium Line
- Line 4: Airport Link
- Routes 5 to 99: Custom routing that connects to Line 1 and/or 2
- Routes 100 to 199: Custom routing that does not connect to Line 1 or 2
- Routes 200 to 299: Connexion (peak-period only routes that connect to the O-Train)
- Routes 301 to 305: Shopper Routes (limited rural service)
- Routes 404 to 406: Canadian Tire Centre events
- Routes 450 to 456: Lansdowne Park events
- Routes 602 to 698: School Routes
- Route R1: replaces Line 1 when out of service
- Route R2: replaces Line 2 when out of service
- Routes N39 to N97: night service (replaces Line 1)
- White backgrounds: service may be limited
- Last two digits represent service area:
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