CFR › Title 30 › Part 57 › §57.931930 CFR §57.9319Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkPersons shall not go over, under, or between railcars unless—(a)The train is stopped; and(b)The train operator, when present, is notified and the notice acknowledged.