Ok, looks even better... Several stupid questions;
1) my supply is 12 V so I assume I need a capacitor double that. I have hidden away some where some 20V 1 farad Yes that's F not uF caps (actually they are spares to fit a Melbourne Z class tram) - suitable?
2) the larger the capacitor the softer the stop?
3) The power to the track is switched off whether there is a tram in the section or not, I assume this change makes no difference?
4) If I used the Dimmers suitably modified and the power goes off to the receiver/dimmer then an instantaneous start at whatever speed was set before the "blackout"would occur as soon as the power is switched back on... If I go with RC it will take a few seconds for the Rx to find the Tx and in that time I've shut the throttle down so a soft start would be gained then as you feed the power in via the ESC?
This is very good, if the cap is large enough the tram may move forward sufficiently before it stops to allow the one following into the same dead section of track, that's a big ask I guess it would have to provide enough power for the tram to run half a metre...