A Train Operator Liaison Officer (TOLO), is the person who attends an incident on the railway to represent the interests and discharge the responsibilities of the railway company in respect of managing that incident.

Standards state that:

“Railway undertakings shall appoint a Train Operators’ Liaison Officer (TOLO) when circumstances require or the infrastructure manager requests it, to represent the interests of all the involved railway undertakings. The infrastructure manager shall liaise with railway undertakings involved in, or affected by, the incident, exchanging details of the incident, its location, site access, rendezvous points, and identities of the RIO and Train Operators’ Liaison Officer (TOLO).”

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