Austria historically left/right running?

[duesselmartin]

Hi all.
I am looking for information what mainlines were historically left or right run and when they were converted to right-hand running.
The West- , Ost- and Brennerbahn are of particular interest but others are also welcome.
Google research seem to suggest that there was no standard running in that respect. Can anyone shed light into this?
Martin

 

[89-763-733]

Wörgl to Innsbruck and Innsbruck to Brenner changed from left hand running to right hand running in 1993.

The situation of left or right hand running came about because sections of line were constructed by different companies who each chose which side of double track to run on independently. The first changes started to be made from 1920

Westbahn changed left to right
11.11.1920 Salzburg Hbf - Vöcklabruck
1931 Vöcklabruck - Attnang-Puchheim
01.07.1943 Attnang-Puchheim -Amstetten
1991 Amstetten-Wien Westbahnhof

The following lines all changed from left to right on 06.08.2012:
Bernhardsthal to Sußenbrunn Junctions
Sußenbrunn Junctions to Wolkersdorf
Sußenbrunn Junctions to Floridsdorf
Floridsdorf to Stockerau
Floridsdorf to Rennweg Junction
Rennweg Junction to Vienna airport
Rennweg Junction to Vienna Meidling
Vienna Meidling to Payerbach-Reichenau
Vienna Meidling to Penzing and Hütteldorf (Verbindungsbahn)

 

[duesselmartin]

that is a good start. Thank you.
Am I correct in assuming that the Hungarian and Bohemian parts of the Empire had mainly right-hand running?

 

[89-763-733]

Can't help with lines that are outside the current ÖBB network, sorry