DC Layout with Common Rail Wiring

[DClifton]

I have the book "Wiring Your Model Railroad" but have a question not answered there.  I am planning a DC layout, two cabs and isolated blocks on the layout.  If two trains are running simultaneously on isolated oval rail lines, and I stop cab A, switch it to reverse, did I just slam cab B with a voltage reversal?  Is the only solution to not use a common ground?

[jward]

Both cabs will operate independently of each other. One cab is not affected by the other cab's polarity.

[DClifton]

Thank you.

[trainman203]

A flashback to the Model Railroad Jurassic. I haven't heard of this stuff since I was a teenage Model Railroader.