[COM] M2 Northern Connector | 15.5km | $867m

[bits]

https://m.facebook.com/watch/?v=1024490917938117&_rdr
2020 was Golden Way to Montague.
It is the same sections of road being repaired which are repaired every few years.

The road has significant problems and laying new bitumen on it every 12 months is not a fix.

[Goodsy]

They're changing the lines on the road from white to yellow now

[SBD]

They're changing the lines on the road from white to yellow now

Yellow seems to show up quite well in bright sunshine, and doesn't look "patched" like the white-on-black area does.

[rev]

They're changing the lines on the road from white to yellow now

You'd think they would have done these trials on a bit of test road nearby while the thing was being built.
But hey, South Australia..lets just be happy that something gets built at all

[Patrick_27]

An extra $1b for the tunnel to include three lanes for the duration instead of two.

[SBD]

They're changing the lines on the road from white to yellow now

You'd think they would have done these trials on a bit of test road nearby while the thing was being built.
But hey, South Australia..lets just be happy that something gets built at all

Which bits of three-lane road would you have supported digging up to re-lay as continuous-feed concrete to test different kinds of linemarking before anyone knew it might be a problem under some light and weather conditions?

[Goodsy]

They're changing the lines on the road from white to yellow now

You'd think they would have done these trials on a bit of test road nearby while the thing was being built.
But hey, South Australia..lets just be happy that something gets built at all

Which bits of three-lane road would you have supported digging up to re-lay as continuous-feed concrete to test different kinds of linemarking before anyone knew it might be a problem under some light and weather conditions?

The line on the asphalt superway are just as hard to see as the connector. It's not a problem with the concrete, it's a problem with the paint

[rev]

They're changing the lines on the road from white to yellow now

You'd think they would have done these trials on a bit of test road nearby while the thing was being built.
But hey, South Australia..lets just be happy that something gets built at all

Which bits of three-lane road would you have supported digging up to re-lay as continuous-feed concrete to test different kinds of linemarking before anyone knew it might be a problem under some light and weather conditions?

They couldn't have built a small "test" section nearby?
Why didn't they use those lit up cats eyes they already trialled elsewhere?
Would having the whole motorway lit up with street lighting make a difference to the visibility of lane markings?

[Nort]

It's quite possible that the road itself was a test of the paint.

[SBD]

You'd think they would have done these trials on a bit of test road nearby while the thing was being built.
But hey, South Australia..lets just be happy that something gets built at all

Which bits of three-lane road would you have supported digging up to re-lay as continuous-feed concrete to test different kinds of linemarking before anyone knew it might be a problem under some light and weather conditions?

They couldn't have built a small "test" section nearby?
Why didn't they use those lit up cats eyes they already trialled elsewhere?
Would having the whole motorway lit up with street lighting make a difference to the visibility of lane markings?

I imagine that a "small test section" becomes quite expensive by the time you build it long enough for all kinds of vehicles to reach top speed on it, then pay drivers and vehicles to drive on it in unpleasant weather conditions.

I have no idea about lit up catseyes. How are they powered? Do they stay lit all night in winter when the day was overcast and gloomy too (if they are solar)?

I imagine the operating cost of painted lines (or cateyes) is much lower than tens of kilometres of street lighting.

You raised good questions. I am supposing possible reasons why those options have not been pursued. I am unaware if they are the real reasons.

[Nort]

I have no idea about lit up catseyes. How are they powered? Do they stay lit all night in winter when the day was overcast and gloomy too (if they are solar)?

Catseyes operate on the same principle as road signs. Have you ever noticed how some road signs seem to get lit up extra brightly by your car headlights? It's due to clever materials engineering that means they reflect a lot of light back in the direction it came from.

[SBD]

I have no idea about lit up catseyes. How are they powered? Do they stay lit all night in winter when the day was overcast and gloomy too (if they are solar)?

Catseyes operate on the same principle as road signs. Have you ever noticed how some road signs seem to get lit up extra brightly by your car headlights? It's due to clever materials engineering that means they reflect a lot of light back in the direction it came from.

@rev said "those lit up cats eyes they already trialled elsewhere" - I thought he/she meant something different to normal road catseyes with retroflective lenses.

[Spotto]

I have no idea about lit up catseyes. How are they powered? Do they stay lit all night in winter when the day was overcast and gloomy too (if they are solar)?

Catseyes operate on the same principle as road signs. Have you ever noticed how some road signs seem to get lit up extra brightly by your car headlights? It's due to clever materials engineering that means they reflect a lot of light back in the direction it came from.

@rev said "those lit up cats eyes they already trialled elsewhere" - I thought he/she meant something different to normal road catseyes with retroflective lenses.

I think rev's thinking of cats eyes that have a light source inside them, they're notably used on Flagstaff Road (only at the bottom of the hill, the top ones have been broken long before they started building the new lane) and on Main South Road at Reynella Interchange.

[rev]

I have no idea about lit up catseyes. How are they powered? Do they stay lit all night in winter when the day was overcast and gloomy too (if they are solar)?

Catseyes operate on the same principle as road signs. Have you ever noticed how some road signs seem to get lit up extra brightly by your car headlights? It's due to clever materials engineering that means they reflect a lot of light back in the direction it came from.

@rev said "those lit up cats eyes they already trialled elsewhere" - I thought he/she meant something different to normal road catseyes with retroflective lenses.

I did mean powered ones. They trialled some at an intersection, I cant remember where exactly. I think they may have even been activated by approaching vehciles.


And I meant a test section not open to the public, just a small stretch, 50m even, to trial painted lines.
Lets think about this for a moment in hindsight...light grey concrete, white line markings...
There's people paid big dollars to design these pieces of infrastructure.

[ChillyPhilly]

Catseyes operate on the same principle as road signs. Have you ever noticed how some road signs seem to get lit up extra brightly by your car headlights? It's due to clever materials engineering that means they reflect a lot of light back in the direction it came from.

@rev said "those lit up cats eyes they already trialled elsewhere" - I thought he/she meant something different to normal road catseyes with retroflective lenses.

I did mean powered ones. They trialled some at an intersection, I cant remember where exactly. I think they may have even been activated by approaching vehciles.


And I meant a test section not open to the public, just a small stretch, 50m even, to trial painted lines.
Lets think about this for a moment in hindsight...light grey concrete, white line markings...
There's people paid big dollars to design these pieces of infrastructure.

Probably would have been the northern and of Panalatinga Road, leading onto/off the Southern Expressway.