The items below are the currently open NTSB recommendations regarding intermodal transit and the OHMS responses. For copies of the specific letters containing the NTSB/OHMS dialog, click the link for the specific item and review the list of "Related Downloads" on the right.

NTSB Classifications:

• OAR - Open Acceptable Response
• OAA - Open Acceptable Action
• OAAR - Open Acceptable Alternative Action
• OUA - Open Unacceptable Action
• OUR - Open Unacceptable Response
• UCL - Unclassified (until NTSB Classifies)