message_ix_models.model.transport.vehicle.STOCK_KEYS

message_ix_models.model.transport.vehicle.STOCK_KEYS = {'F': (<freight activity:n-t-y>, <load factor:n-t-y:F+exo>, <lifetime:n-t-y:exo>), 'LDV': (<pdt ldv:n-y:total>, <load factor ldv:n-y:exo>, <age:n-t-y:ldv+exo>), 'P ex LDV': (<pdt:n-y-t>, <load factor:t:P+exo>, <lifetime:n-t-y:exo>)}[source]

3-tuple of keys for each MODE:

  1. Key for total service activity, dimensions (n, y) or (n, y, t).

  2. Key for load factor or occupancy.

  3. Key for average age of stock as of the initial period.