Lattice Diagram of a transmission line

[Ana Mido]

Main Question or Discussion Point

In lattice diagram, if the voltage wave is generated at Junction that there is an overhead transmission line before it, will the wave be in two directions with the same magnitude, or one in neglected ?
Picture may illustrate
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[magoo]

It is not clear to me from your sketch what your transmission line looks like. It almost looks like you have two transmission lines at right angles to each other.

Does your "e" represent a surge? If so, the initial surge is starting before a junction.

If you could clarify this a bit, I might be able to comment further.