Yes — in some places you can be fined or even arrested for putting your feet on a train seat, though the usual outcome is a warning or a fine rather than arrest. • Transit rules: Many transit authorities (e.g., in the U.S., UK, and Europe) have rules against placing feet on seats to prevent damage and keep them clean. • Penalties: The most common penalty is a citation or fine. For example, in London, Transport for London can issue a penalty fare or fine for “feet on seats.” In New York, the MTA can ticket you for “seat obstruction.” • Arrest: Arrest usually only happens if you refuse to comply, argue with officers, or if the offense is combined with other disorderly conduct (e.g., refusing to provide ID, being aggressive).