claybro wrote: ↑
Mon Dec 31, 2018 12:08 pm
With regard also as to light v heavy rail, I happened to be in SA last week and used both the Glenelg tram and the Grange train. What struck me was the incredible slow pace of the train. It was virtually walking pace out of Adelaide yard, and barely 40 km/h to Bowden. The tram on the other hand, seems to have sped up, the driver that day practically gunned it through the parklands section after leaving South Terrace. Speed between the stops was reasonable as well. The train on the other hand.. not good. If and when a CBD rail loop is constructed, heavy rail would be the go, but for god sake... speed it up.
Trains feel slower than trams because you are higher off the ground. The best way to tell your speed is to use a GPS app on your phone. I've had this running while sitting on the Grange train: https://play.google.com/store/apps/deta ... id.digihud
From Adelaide to Woodville, it goes about as fast as nearby Port Road (60 km/h). Then, on the Grange line spur, the speed boards say 90 km/h. Sure enough, measured by the GPS on my phone, the train does reach 90 km/h! A typical tram cannot do this.
The Grange train takes 22 minutes to travel from Adelaide to Grange. Driving during the day takes 23 minutes, according to Google Maps. During peak hour, driving is even slower. Not many public transport routes can claim to be faster than driving!
The big problem with the Grange train is its lack of frequency and the perception that it's slow, even though in reality it is surprisingly fast. The best solution to the frequency problem is to have the Grange train terminate at Woodville. The same railcar can then cover the shorter route at a higher frequency. It's easy for passengers to change trains at Woodville.
SBD wrote: ↑
Thu Jan 03, 2019 3:10 pm
Is the only conceivable growth path for SA to move more people into higher density living and working in inner Adelaide?
Would the optimal transport strategy look different if we had a goal of five or six hubs in the Greater Adelaide area, and a further five cities over two hours (surface transport) from Adelaide?
Instead of expecting everyone to work in the Adelaide CBD and optimise by making it possible for them to live closer, are there models of successful cities/states with multiple centres?
For example, instead of imagining everybody wants to live and work in the same place, perhaps have hubs at
- Port Adelaide
Each with their own local transport system (buses or trams) and faster rail connections to join them together when we want to move between them.
If we are to have multiple hubs in Adelaide, it would make sense to have them all in a straight line with that line going through the city. It's much easier to connect destinations in a straight line than having hubs all over the place. Obviously, we would only need one high quality public transport route. If the hubs are all over the place and you want to connect them without going through the city (eg Port Adelaide to Glenelg and Port Adelaide to Modbury) it means we need multiple routes, which means funding has to be divided between multiple routes, which means each route is lower quality.
There is not much in the south east of Adelaide. If we want all the hubs to be in a straight line, and there is no point in developing a hub in the south east, then that ALSO means developing a hub in the north west is not a good idea. As much as I like Port Adelaide, geography puts it in this unfortunate location.
This is why I think suburban hubs at Elizabeth and Marion is a good idea, or any other solution with hubs along the Gawler and Seaford lines. Also, when the CBD rail tunnel is built, you could take a direct train between the two locations.
EDIT: on further thought, there is another thing to look for in hubs: whether the line has branched before the hub. For example, trains are more frequent between Goodwood and the city than Seaford and the city. Plus, you have more direct destinations available to you. This is because you can take Seaford, Tonsley and Belair trains from Goodwood. So an ideal hub would be positioned before a branch.
In the south, this means Goodwood. Maybe Goodwood is too close to the city for a hub? The other thing going for Goodwood is that it's on the Glenelg tram. How about Emerson/Black Forest? It's also at the intersection of two major roads and may in the future be on the intersection of two motorways.
In the north, this is less of a problem because there is no branching. That may change, however, when the goods trains use different alignments. If the Adelaide Hills bypass is built, then the standard gauge line north of Salisbury could be opened to public transport. Similarly, the Port Adelaide-Dry Creek line could be opened for public transport and the Northfield line relaid. This would put Dry Creek as a good hub. The problem here is that it would be a greenfield site, unlike further developing Mawson Lakes, Salisbury or Elizabeth.