Somebody showed me a picture were there was not only "EOA" in the Override window (must have been an older version of the specification). It was something like "Route suitability".
The only defined item (according to the DMI spec ERA_ERTMS_015560, v3.6.0) is EOA. That does not mean that someone has not added an extra feature and "route suitability" would be an interesting one. If you find out more, please share with us all.
Yes and no. Don't get caught in the trap of focussing on when the system is not working as intended rather than the high 90s %age of the time that it is working. Override is designed to allow a specific exclusion from the system supervision and there are design factors (such as override distance) but also operational rules and training which need to be applied. If the EOA is marked then drivers are probably going to aim to stop about 25-50m from it so they can read any identity plate. For an unmarked EOA then it is all down to how they read the DMI but one could probably suggest that they would be 50-100m from the EOA considered as the EOA by the train. That means an override distance of anything over 100m should allow a driver to get past any SiiSR balise. Hope that makes sense.
Somebody showed me a picture were there was not only "EOA" in the Override window (must have been an older version of the specification). It was something like "Route suitability".
The only defined item (according to the DMI spec ERA_ERTMS_015560, v3.6.0) is EOA.
That does not mean that someone has not added an extra feature and "route suitability" would be an interesting one.
If you find out more, please share with us all.
Wouldn't it be nice to warn the driver before the override distance or time elapses, to avoid unnessary emergency brakes?
Yes and no. Don't get caught in the trap of focussing on when the system is not working as intended rather than the high 90s %age of the time that it is working.
Override is designed to allow a specific exclusion from the system supervision and there are design factors (such as override distance) but also operational rules and training which need to be applied.
If the EOA is marked then drivers are probably going to aim to stop about 25-50m from it so they can read any identity plate. For an unmarked EOA then it is all down to how they read the DMI but one could probably suggest that they would be 50-100m from the EOA considered as the EOA by the train.
That means an override distance of anything over 100m should allow a driver to get past any SiiSR balise.
Hope that makes sense.