FA-12199 / Navigation route constraints / Member archive
An only-turn rule leaks onto other incoming roads · case 04
An only-turn rule leaks onto other incoming roads in the controlled route-policy fixture.
Case contract
Rules are pairs of incoming and permitted outgoing IDs. For one incoming road matching rules form a union; an unmatched approach permits all exits.
Why this case matters
Navigation policies depend on road context that a shortest-path cost alone does not encode.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| unrelated incoming | false | true | Failed |
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