The specific choice task is described as follows: ‘You are re-evaluating your
mode options from [origin] to [destination] for your shipments this month. You
have recurring shipments of non-bulk cargo (a shipping container or truckload
equivalent) of 20 tonnes for delivery on this corridor. [Percentage indicated
in background screens] of these shipments involve perishable items, and
[Percentage indicated in background screens] of these shipments must reach the
destination within 3 hours of the scheduled delivery time.