Ar

On Sat, 19 Jul 2008 04:48:00 -0700, contrex wrote:

>> they are where the signals would be if there were trackside signals.
>
> What meaning, exactly, does that convey?

From what one DVD on a Eurostar trip said on commentary, the track is
split into sections, and these sections help identify where the train is
specifically if the driver needs to radio where the train stopped. I
would guess this is mostly used for emergencies. I have no idea how far
apart the sensors for the TVM system are spaced, especially compared to
these section markers.