Corrections are the work
Readers suggest routes, flag wrong departure times and share practical details that timetables leave out, such as how long the walk between two stations really takes. We treat those suggestions as leads to verify rather than as finished facts, and we check them against an operator source before they land on a page.
That makes a correction the single most useful thing you can send us. A message with the operator, the route and the date is something we can act on the same week; a vague note about a train being late is not.