Road marking

SteM

This road marking is at the junction of Greenhills Road and Main Road in Tallaght. It doesn’t look correct to me, it just seems to have been plonked randomly in the middle of the road. Is it in the right spot does anyone know?

gaffmaster

It looks like they're trying to encourage a "Box Turn" for cyclists there.

Here's an American video that explains the concept (watch it in a mirror!).
https://www.youtube.com/watch?v=p41Pijwv1AU

gaffmaster

Looking at the picture again, if you were turning right using that system, you'd want to signal right well before the junction, even though you're veering to the left. I'd worry a car turning left might assume you're also turning left, given the road positioning.

punisher5112

Its design is to keep cyclists especially in busy condition from having to try and move out to turn right and not be out in main traffic lane wiith the added danger of a shunt from behind.

You cycle straight then merge into lane and straighten up.

Works very well when you know light sequence and pedestrian lights are going to come on etc.

It works very well op if only people who cycle would understand thats what it is there for just a little more safety is all.

ThisRegard

What I think it wants you to do is that if you want to turn right at that picture you stay left, cycle into that box when you have the green light and then wait there until traffic from the left has a green and you move off with them.

Rightly or wrongly they don't want you sitting in the lane there to turn right, either because they think you're an obstruction to traffic or a danger to yourself.

Seaswimmer

They have them at some junctions along the Blackrock bypass. They are useful there because some of the junctions have "no right turn" so it allows a cyclist to effectively turn right when cars cant..

Zyzz

Just wait till CycleDub gets his hands on this..

sbs2010

ThisRegard wrote: »

What I think it wants you to do is that if you want to turn right at that picture you stay left, cycle into that box when you have the green light and then wait there until traffic from the left has a green and you move off with them.

This - and as also stated by SeaSwimmer, perfect for when there is No Right Turn. It validates what a savvy cyclist might do anyway.

E.g. at the 5 Lamps junction in town I come up from Seville Place and want to turn right, to head out North Strand.

If the lights are green I cross the junction and join the Amiens Street traffic that is stopped at their red. When that goes green I'm good to head on out North Strand.

Having that box there would let everyone know there was a possibility that a bike might do this, and are allowed to do it.

smacl

Seaswimmer wrote: »

They have them at some junctions along the Blackrock bypass. They are useful there because some of the junctions have "no right turn" so it allows a cyclist to effectively turn right when cars cant..

It can be a useful manoeuvre where there is no right turn even if there is no marked box junction for bikes, e.g. here when heading towards Hueston Station. I assume where other traffic is legally allowed to turn right they're optional like much of the rest of our cycling infrastructure.

Wishbone Ash

sbs2010 wrote: »

T...E.g. at the 5 Lamps junction in town I come up from Seville Place and want to turn right, to head out North Strand.

If the lights are green I cross the junction and join the Amiens Street traffic that is stopped at their red. When that goes green I'm good to head on out North Strand.

Having that box there would let everyone know there was a possibility that a bike might do this, and are allowed to do it.

I do that regularly also at that junction (but am always aware that is probably isn't legal).