west point wrote: ↑Sat May 23, 2020 11:39 am
Did someone post that the FRA will not allow a bus running across the whole train ? If that is so maybe that is why each car does not have traction motor like some in Europe do ?
MattW wrote:I believe the FRA allows jumpers between married pairs. Beyond that, I know of no equipment in this country that transmits power between more than two cars.
This is my understanding, although I have not read the specific rule related to this issue. HEP can cross field-operated couplings, traction power can only cross semi-permanent couplings. See M8, geep-slugs, Arrows, etc... all have traction power crossing a coupling that can only be undone by shop forces.
I was a bit surprised when Metra and South Shore ordered the gallery EMU a few years ago and didn't marry the pairs, as the pantograph hump takes up a few rows of seats.