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

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

#1171 Post by bits » Mon Jun 14, 2021 12:01 pm

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.

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

#1172 Post by Goodsy » Sun Jun 20, 2021 1:56 pm

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

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

#1173 Post by SBD » Sun Jun 20, 2021 3:37 pm

Goodsy wrote:
Sun Jun 20, 2021 1:56 pm
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.

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

#1174 Post by rev » Mon Jun 21, 2021 6:05 am

Goodsy wrote:
Sun Jun 20, 2021 1:56 pm
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 :lol:

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

#1175 Post by Patrick_27 » Tue Jun 22, 2021 4:53 pm

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

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

#1176 Post by SBD » Tue Jun 22, 2021 6:35 pm

rev wrote:
Mon Jun 21, 2021 6:05 am
Goodsy wrote:
Sun Jun 20, 2021 1:56 pm
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 :lol:
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?

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

#1177 Post by Goodsy » Tue Jun 22, 2021 8:17 pm

SBD wrote:
Tue Jun 22, 2021 6:35 pm
rev wrote:
Mon Jun 21, 2021 6:05 am
Goodsy wrote:
Sun Jun 20, 2021 1:56 pm
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 :lol:
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

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

#1178 Post by rev » Wed Jun 23, 2021 4:57 am

SBD wrote:
Tue Jun 22, 2021 6:35 pm
rev wrote:
Mon Jun 21, 2021 6:05 am
Goodsy wrote:
Sun Jun 20, 2021 1:56 pm
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 :lol:
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?

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

#1179 Post by Nort » Wed Jun 23, 2021 8:16 am

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

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

#1180 Post by SBD » Wed Jun 23, 2021 11:45 pm

rev wrote:
Wed Jun 23, 2021 4:57 am
SBD wrote:
Tue Jun 22, 2021 6:35 pm
rev wrote:
Mon Jun 21, 2021 6:05 am


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 :lol:
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.

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

#1181 Post by Nort » Thu Jun 24, 2021 8:14 am

SBD wrote:
Wed Jun 23, 2021 11:45 pm
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.

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

#1182 Post by SBD » Thu Jun 24, 2021 9:21 am

Nort wrote:
Thu Jun 24, 2021 8:14 am
SBD wrote:
Wed Jun 23, 2021 11:45 pm
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.

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

#1183 Post by Spotto » Thu Jun 24, 2021 1:02 pm

SBD wrote:
Thu Jun 24, 2021 9:21 am
Nort wrote:
Thu Jun 24, 2021 8:14 am
SBD wrote:
Wed Jun 23, 2021 11:45 pm
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.

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

#1184 Post by rev » Thu Jun 24, 2021 5:29 pm

SBD wrote:
Thu Jun 24, 2021 9:21 am
Nort wrote:
Thu Jun 24, 2021 8:14 am
SBD wrote:
Wed Jun 23, 2021 11:45 pm
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.

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

#1185 Post by ChillyPhilly » Thu Jun 24, 2021 5:42 pm

rev wrote:
SBD wrote:
Thu Jun 24, 2021 9:21 am
Nort wrote:
Thu Jun 24, 2021 8:14 am
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.
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