Originally Posted by
Icarus2001
So the train slows down where required, as all trains do but get the average speed up. Yes if some realignment is needed then do it. If travel time was closer to two hours then it would be viable.
We all know the reason no government is interested in trains anywhere near SYD- CBR is some very strong interest groups who provide chairman’s lounge and business class trinkets.
If you want two hours Sydney - Canberra, you need to average 145 km/h point-to-point. That means you need to be hitting 160 - 180 km/h for most of the journey. Those speeds require minimum turn radii of 1.2 - 1.4 kilometres and grades not exceeding 1 in 30 for any significant distance. Between Campbelltown and Mittagong you currently routinely encounter sub-0.4 kilometre radius turns. Around places like Sutton Forest, Tallong, Towrang, Mount Fairy and Queanbeyan you've got a number of 0.5 - sub-1 kilometre radius turns. So, it's more than just "some realignment" that
is needed, not if needed.