FA-85630 / Ride-hailing fare and surge pricing / Member archive

Flat fare only applies in the stored direction · case 05

Downtown-to-airport trips are metered while airport-to-downtown is flat.

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Case contract

Zone names are case-insensitive (normalized upper case). A flat fare table keyed "A|B" applies in both directions; a flat fare (0 is a valid promotional flat) is never surged. Otherwise the metered fare is surged (tenths, half up). Airport fees apply separately: the pickup fee of the pickup zone and the dropoff fee of the dropoff zone. Tolls are added last. Return [fare, flat|metered].

Why this case matters

Ride-hailing prices are computed per trip at scale; ordering, unit and boundary slips become systematic over- or under-charging.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
regression: reverse direction lookup	`[3692, "metered"]`	`[4800, "flat"]`	Failed

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