Why this site exists
Southern California is served by dozens of independent transit agencies. Trip planners tell you which bus to catch. Few of them tell you whether the ticket you already hold pays for it.
The rules, not just the route
Fare reciprocity, transfer windows, and which passes cross county lines — the details that decide whether your trip costs one fare or four.
Where systems meet
Union Station, El Monte, ARTIC, San Bernardino Transit Center, Oxnard — including cases like two stations sharing a name three miles apart.
It asks before it answers
When a question has more than one answer, you get a short multiple-choice follow-up rather than a long answer covering every case.
Always shows its sources
Every answer links back to the agency page it came from, so you can check it yourself, or show it to a driver or fare inspector.