The Public Transit Mental Health Awareness Act requires public transit agencies that receive federal funding to display suicide prevention hotline information in visible locations on their vehicles and facilities. The law applies to all recipients of federal transit assistance under Chapter 53 of Title 49, affecting transit agencies nationwide. The displayed information must include the national suicide prevention hotline number and note that it is free, confidential, and available 24 hours a day. Transit agencies can meet this requirement by posting the information either on all their vehicles or in all their transit facilities, and they will not be considered non-compliant if displays are temporarily damaged or vandalized as long as they make reasonable efforts to replace them. The requirement takes effect one year after the bill is enacted.