Newlands Cross Flyover Opening 20/11/14

CVH24

Was just reading about this opening, I use it occassionally and has always been a pain, but just wondering how successful people think it will be?

I guess it should work well outbound and inbound too, but just wondering does anyone else thing it could all pile up at the junction of the Naas Road with the New Nanger Road and the Long Mile Road?

rameire

http://www.boards.ie/vbulletin/showthread.php?t=2055686254&page=37

See the full newlands thread.
All the fun is over there

---

>

L1011

CVH24 wrote: »

but just wondering does anyone else thing it could all pile up at the junction of the Naas Road with the New Nanger Road and the Long Mile Road?

No, because the same volume of cars already goes there. We get this suggested every time there's a road improvement open and it never happens.

coylemj

L1011 wrote: »

No, because the same volume of cars already goes there. We get this suggested every time there's a road improvement open and it never happens.

Of course the inbound queues at the Long Mile Road will be longer. Despite what you say, removing bottlenecks upstream always leads to bigger bottlenecks downstream. I remember when the N4/N6 was progressively built from Dublin to Kinnegad and Athlone - every time they opened up a new section, it pushed the bottleneck on Friday evening further west and it got worse. People got to the new bottleneck faster which meant longer queues.

By the time that Moate was bypassed, it had become a horrendous bottleneck every Friday evening for westbound traffic. Your theory says that each new improvement would have no effect on other parts of the network which was not borne out in the case of the N4/N6.

Chris_5339762

coylemj wrote: »

Of course the inbound queues at the Long Mile Road will be longer. Despite what you say, removing bottlenecks upstream always leads to bigger bottlenecks downstream. I remember when the N4/N6 was progressively built from Dublin to Kinnegad and Athlone - every time they opened up a new section, it pushed the bottleneck on Friday evening further west and it got worse. People got to the new bottleneck faster which meant longer queues.

Nah, in that case the 'upstream' places like Enfield were acting as the blockage, releasing finite amounts of traffic that Moate could cope with.

Once Enfield (say) was bypassed, the next town down became the pinch point and instead of having finite amounts of traffic now became the main bottleneck.

It'll be interesting to see what the unblocking of Newlands will do. I think inbound, it'll make a bit of difference to the queues... the lanes to go southbound will jam up as the M50 south is jammed anyway... M50 north could jam up as well just like M50S did when the M1 widenings removed the filter.

Outbound I have a horrible feeling that the 5 into 3 at the Red Cow will continue to cause issues.

L1011

coylemj wrote: »

Of course the inbound queues at the Long Mile Road will be longer. Despite what you say, removing bottlenecks upstream always leads to bigger bottlenecks downstream. I remember when the N4/N6 was progressively built from Dublin to Kinnegad and Athlone - every time they opened up a new section, it pushed the bottleneck on Friday evening further west and it got worse. People got to the new bottleneck faster which meant longer queues.

By the time that Moate was bypassed, it had become a horrendous bottleneck every Friday evening for westbound traffic. Your theory says that each new improvement would have no effect on other parts of the network which was not borne out in the case of the N4/N6.

That was because the road was already at max capacity with the traffic that was coming through Enfield - this is not the case with the N7(well, R1whatever) , as anyone coming off the M50 can tell you. It empties out between bursts from NX. The same volume of cars will continue to reach it in the same time.

We were told this would happen with the N7 flyovers/widening for the Ryder Cup; it didn't. We were told it'd happen with the Newcastle flyover on the N4, it didn't. We were told it'd happen with the new-ish flyover on the N11, it didn't.

hawkwing

How was it this morning in or out