FA-12204 / Navigation route constraints / Member archive

A destination-only road becomes a through-road shortcut · case 04

A destination-only road becomes a through-road shortcut in the controlled route-policy fixture.

Member previewVariant 4 · 3 implementations · 7 checks per implementation

Case contract

For this zone model public roads always permit travel, closed roads never do, and destination roads require origin or destination in the supplied zone.

Why this case matters

Navigation policies depend on road context that a shortest-path cost alone does not encode.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
through traffic denied	`true`	`false`	Failed

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