FA-63078 / Insurance premium rating / Member archive

Bonus-malus class transitions: Three claims do not trigger the worst class · case 03

A year with exactly three claims is rated as an ordinary penalty.

Member previewVariant 3 · 3 implementations · 9 checks per implementation

Case contract

Input start class 1..18 (else 'invalid class'), claims per year, coeffs (18 per mille values, class 1 best), base. Per year: 0 claims -> class-1 (floor 1); 3+ claims -> class 18; otherwise class+3*claims (ceiling 18). Return [class after each year, floor(base*coeff/1000+1/2) for the final class].

Why this case matters

No-claims discount systems compound a transition error across every renewal.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
three claims hits worst class	`[[12, 11], 59820]`	`[[18, 17], 72638]`	Failed

MEMBER ARCHIVE

The complete case is available to members.

This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

Member access is invitation-based. Sign in with your invited account to inspect the sources.