OpenRailAssociation / osrd

An open source web application for railway infrastructure design, capacity analysis, timetabling and simulation
https://osrd.fr
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Collection of dead sections causing Simulation Errors #7359

Closed axrolld closed 5 months ago

axrolld commented 6 months ago

What happened?

Errors caused by stops between dead sections announcements and exe:

SAG – VRB image

LWA – LGK image

RUX – BIA image

DEE- SNG image

axrolld commented 6 months ago

Other errors caused by dead sections

PPO – SMA

No error with PPO SMA Error with MSC PPO SMA with a stop in PPO.

Cause : pantograph raise time converted into distance for the effective resumption of traction: 650m. The La Pomme operational point (PPO) is located in this zone.

image

SOS – LEG

Error with SOS LEG

Error with PCL SOS LEG with or without stop SOS

Cause: panto raise time converted into distance potentially too long
OR wrong speed limit on this zone (40km/h) which means that the train loses too much speed.

Overall BP/CC on a 40km/h zone, so if we are too pejorative the train stops.

image

??? VCV

??? = Nîmes Pont du Gard (no trigramm)

No error on ??? VCV

Error on MHV ??? VCV if stopped at ???

Cause :
panto raising time converted into distance too long (for BPCC before station) And potentially 2nd error afterwards: BP warning sign just before the station

image

SQF SPR

No error on SQF SPR

Error if VEI SQF SPR with stop on SQF

Cause: fork between the announcement sign and the exe sign: the train sees the announcement sign then changes track before exe, and therefore does not catch the BP. The running calculation considers that it has caught a small part of the PO.

image

SGO QUX

No error on SGO QUX

Error if VVN SGO QUX with stop on SGO

Cause: Stopped just after the BP zone, i.e. during the extension of the pan up time.

image

DNV – SVI

No error on DNV SVI

Error on BN DNV SVI if stopped on DNV

Cause: stop just after the REV sign, therefore potentially within the 5s of power recovery transformed into distance.

image

STE FRN

No error on STE FRN

Error on AGD STE FRN if stopped on STE

Cause: STE located just behind two BPs.

image

DEL – DEL

Error between Delle (BV) and Delle (XS)

Cause: DEL (BV) is in the middle of a BP zone.

image

axrolld commented 6 months ago

Fix suggestion :

bloussou commented 5 months ago

We should even drop the 20m as it won't changed the simulated time and add a useless complexity. As said yesterday in a meeting it has probably no impact.

multun commented 5 months ago

Fixed by #7413