FA-85672 / Ride-hailing fare and surge pricing / Member archive

Quick long pickup reduces the distance fee · case 02

A fast long-distance pickup gets a negative time component that offsets the distance fee.

Member previewVariant 2 · 3 implementations · 7 checks per implementation

Case contract

A long-pickup fee compensates drivers for pickups beyond thr_m meters and thr_s seconds. The distance part is per_km on meters beyond thr_m (prorated, half up); the time part is per_min on each started minute beyond thr_s; each part uses only its own positive excess. The total is capped at cap cents.

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: negative time excess	`-90`	`0`	Failed

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