AI driver can strand itself before signalling-only station

[Paul Sladen]

Binary package hint: openbve

When running the 'HighDetail_323_Summer_2002_0931_Rain_Overcast.csv' diagram of the Cross City-South route under the built-in AI (no plugins), the AI now gets stuck approximately 2.5 metres before "Station 4" (a signalling-only (non-station) point after Northfield).

The AI stops outside the allowed "station" tolerance and so the train does not "arrive", the signal ahead does not clear, and the AI does not attempt to make any further progress (to approach) closer to the signal. (Found in ~1.2.1.1 onwards with the tweaks to the red-light advance whilst in station code).

This should be reproducible by starting up the Class 323 (without plugins) on the XCS route diagram (and others);

    * loading the route
    * jumping to Northfield station and,
    * then engaging the AI.

The train proceed for a minute and will then stop "in the middle of nowhere", shortly before the virtual station "Station 7" and refuse to move any further. If

    * the AI is disengaged,
    * the train manually advanced ~5 metres and,
    * the AI re-engaged

then the signal will have cleared and the train will proceed normally.

Ideally the AI should not completely strand itself.

[Paul Sladen (sladen)]

http://openbve.freeforums.org/1-2-1-1-ai-can-strand-itself-before-signalling-only-station-t1144.html