What?
During request generation, the amount and weight of bags a passenger wants to bring on a flight, as well as their likely-hood to travel with fewer if the fare incentivizes it, are pseudo-randomly determined.
New fare rules than state
- how many bags are allowed,
- how heavy they are allowed to be and
- how much is charged for additional bags and/or additional weight.
In fare matching/rating, these factors are taken into account to decide which fare is the most attractive for a given pax.
Why?
This as well allows to differentiate between different customer groups. The true impact stems from the operational implications, though: Less bags mean lower handling costs, shorter turnaround times and lower fuel consumption, at the cost of locking out the group of customers that want to or have to bring bags.
When?
Depends on Basic Fare Rules and all transitive dependencies that come with those.