FA-12238 / Navigation route constraints / Member archive

A curbside waypoint accepts arrival from the wrong carriageway · case 03

A curbside waypoint accepts arrival from the wrong carriageway in the controlled route-policy fixture.

Member previewVariant 3 · 3 implementations · 7 checks per implementation

Case contract

This straight east-west two-carriageway model has north/south curbs. A right-driving eastbound vehicle serves south; westbound serves north. Left-driving reverses this. either permits either curb.

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
right-driving opposite curb	`true`	`false`	Failed

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