1.at the booking stage
2.at check-in stage
3.on board the vessel, aircraft or train
Where the booking or check-in process is managed by someone other than the operator, it is sufficient for the transport operator to show that they have taken reasonable steps to ensure that the information is provided by that person.
The is also a requirement for plane and ship operators to undertake announcements akin to air safety announcements on the symptoms, precautions and the need to complete a contact locator form online.