Transit Fare Policy Assistant
Answers questions about published fare and reduced-fare policies for five California transit agencies: Monterey-Salinas Transit (MST), Santa Barbara MTD, Yolobus, SacRT, and Humboldt Transit. Based on policies published as of June 12, 2026. You can ask in English or Spanish.
What it will not do
- It does not decide whether you qualify for a discount. It explains the published criteria and how to apply.
- It does not give medical, legal, or immigration advice.
- It does not collect personal information. Please leave ID numbers and birth dates out of your question.
How this assistant is tested
The evaluation harness is the point of this project. Every release runs 201 test cases across nine suites — groundedness, refusal, eligibility edge cases, Spanish parity, and freshness — scored by deterministic checks and an independent LLM judge, one that differs from the model writing the answers.
Latest run: 192 of 201 passed (95.5%). The harness is reproducible, and the failures are published in full rather than hidden.