[U/C] M2 North-South Motorway

[Westside]

Aren't we getting ahead of ourselves a bit here? Do we really need a network of freeways connected up? Some better arterials, sure, but we don't need flyovers and trenches funnelling cars all over the city. The North/South corridor is going to be grossly over-engineered as it is.

Ahead of ourselves, don't you mean backwards of ourselves? This kind of thinking is very 20th century and isn't likely to be repeated again. Freight doesn't need freeways to move about and freeways don't have to all be connected to each other. Cross Road isn't great, but still functions pretty well as an arterial rd. I'd suggest it will get a lot more traffic when the N-S motorway is complete, but some minor grade separations will be more than enough to keep the traffic manageable. The SE Freeway will end where it is as it very effectively fans traffic pretty evenly onto Cross, Glen Osmond and Portrush Rds.

[bits]

In the time period you would think Adelaide will require all these freeways, eg in decades to come; driverless vehicles will be the norm.

In time the self driving cars have huge potential for efficiency on the roads that humans can not manage.

[muzzamo]

In time the self driver cars have huge potential for efficiency on the roads that's humans can not manage.

I think its a bit of an unknown at the moment. It could also encourage much longer journeys and more time spent on the road.

[claybro]

Ahead of ourselves, don't you mean backwards of ourselves? This kind of thinking is very 20th century and isn't likely to be repeated again. Freight doesn't need freeways to move about and freeways don't have to all be connected to each other

You are joking right? Freeways are being expanded STILL worldwide with good reason. Large volume freight can be transported by rail, but not point to point. This task is almost doubling every decade. And regarding the driverless cars situation...this will encourage MORE cars on to roads as smaller vehicles will be used for ride sharing and take some of the task of mass transit. I would say the requirement for freeways will increase with time not decrease, as stop start journeys on main roads controlled by traffic lights do not tie in well with high efficiency driverless vehicles concept.

[ChillyPhilly]

The need for freeways can be controlled if transport planning is undertaken in simultaneous conjunction with land use planning.

Transport planning has for too many years focused on the movement of the number of vehicles, as opposed to the number of people (or the amount of goods). The N-S Corridor is little exception to this.

We all know that the focus on the number of vehicle movements creates our friend 'induced demand'. We perceive induced demand as urgently requiring a solution (more or better roads), while the actual solution was to not create the issue in the first place by having the appropriate focus (movement of people and goods).

In response to a connection between the N-S Corridor and the SE freeway, I had this idea for years now about creating a new link between South Road around the Sturt Road intersection and the SE freeway a short distance west of the Mount Osmond interchange.

[claybro]

response to a connection between the N-S Corridor and the SE freeway, I had this idea for years now about creating a new link between South Road around the Sturt Road intersection and the SE freeway a short distance west of the Mount Osmond interchange.

Without looking at the original details of the MATS plan, I believe there was something similar planned along the SE foothills? For todays purpose though it is probably a bit far South to be useful as a direct route for heavy transport to the N/S motorway from the SE freeway.

[ChillyPhilly]

response to a connection between the N-S Corridor and the SE freeway, I had this idea for years now about creating a new link between South Road around the Sturt Road intersection and the SE freeway a short distance west of the Mount Osmond interchange.

Without looking at the original details of the MATS plan, I believe there was something similar planned along the SE foothills? For todays purpose though it is probably a bit far South to be useful as a direct route for heavy transport to the N/S motorway from the SE freeway.

I think you might be right. In MATS, the SE Freeway was originally intended to begin at the southern end of Belair Road. The link between that and the Noarlunga Freeway was known as the Foothills Expressway.

[rev]

In the time period you would think Adelaide will require all these freeways, eg in decades to come; driverless vehicles will be the norm.

In time the self driving cars have huge potential for efficiency on the roads that humans can not manage.

Driverless trucks(freight), will still need efficient, modern roads, ie freeways.

We will need more modern roads more so then we do now and road maintenance will have to be dramatically improved, because it will make those driverless vehicles all that much safer without the pot holes and the disgusting state of many of our roads are in today and have been for many years.

[bits]

I would say the requirement for freeways will increase with time not decrease, as stop start journeys on main roads controlled by traffic lights do not tie in well with high efficiency driverless vehicles concept.

Intersections should prove no issue at all. The cars will fly through them bumper to bumper at full speed. We have synced lights but think we can't sync cars? (Think london subway system and how close those ancient things can autonomously drive)

I think you and others are grossly underestimating what will be happening with driverless cars.

Driverless cars are not about simply reverse parallel parking or keeping lanes, maintaining speed and collision avoidance on freeways (cars have been doing all that for many years now), they will drive and they will drive better than you and I ever could.


With that in mind I say se freeway connecting to ns motorway will never be required. In 30+ years we will be selling off the land of ns motorway and converting it back to a single lane in both directions.

[Goodsy]

I would say the requirement for freeways will increase with time not decrease, as stop start journeys on main roads controlled by traffic lights do not tie in well with high efficiency driverless vehicles concept.

Intersections should prove no issue at all. The cars will fly through them bumper to bumper at full speed. We have synced lights but think we can't sync cars? (Think london subway system and how close those ancient things can autonomously drive)

I think you and others are grossly underestimating what will be happening with driverless cars.

Driverless cars are not about simply reverse parallel parking or keeping lanes, maintaining speed and collision avoidance on freeways (cars have been doing all that for many years now), they will drive and they will drive better than you and I ever could.


With that in mind I say se freeway connecting to ns motorway will never be required. In 30+ years we will be selling off the land of ns motorway and converting it back to a single lane in both directions.

Syncing lights and cars can only happen on controlled access roads where there's only driverless cars. All the benefits of going driverless are lost when they're stuck behind someone who's going 10kph under the speed limit or swerving in and out of lanes.

[ChillyPhilly]

There's a few pink and yellow markers along Salisbury Highway/PRExy, west, east and along and around the Superway interchange. Extends a fair way west and east, as well as in the median.

(What do they call them exactly? The small wooden posts with pink ribbon tied to the top?)

[monotonehell]

(What do they call them exactly? The small wooden posts with pink ribbon tied to the top?)

You mean survey pegs, markers or stakes?

[ChillyPhilly]

(What do they call them exactly? The small wooden posts with pink ribbon tied to the top?)

You mean survey pegs, markers or stakes?

Stakes is probably the best term. Had a mental blank.

[rev]

Intersections should prove no issue at all. The cars will fly through them bumper to bumper at full speed. We have synced lights but think we can't sync cars? (Think london subway system and how close those ancient things can autonomously drive)

I very much doubt they will be doing full speed, EVER, on public roads.

I think you and others are grossly underestimating what will be happening with driverless cars.

And you're over estimating things.

With that in mind I say se freeway connecting to ns motorway will never be required. In 30+ years we will be selling off the land of ns motorway and converting it back to a single lane in both directions.

LOL you're dreaming.

[SouthAussie94]

(What do they call them exactly? The small wooden posts with pink ribbon tied to the top?)

You mean survey pegs, markers or stakes?

Survey pickets is what they're usually refered to as. The ribbon tied to the top is called flagging.

I haven't seen the pickets you're refering to, however there will often be electrical tape near the base of the pickets. This gives information relating to the finished level of the project, indicating how much soil needs to be cut or filled at this location. Different colour tape indicate differnt amounts (ie: Fill 300mm may be red tape, and fill 600mm may be two lots of red).

Chances are there are also some pickets there which have been painted yellow, with yellow flagging. These indicate the presence of a survey control mark which is used by the surveyor to set-up on before conducting the survey..