[get on your bike]

Originally Posted by DePurpereWolf

This is all just dickish driving behaviour, very Irish, but not specific to roundabouts. A percentage will find a way to create an accident in any situation.

Havnt read all the thread but I'm going to avoid that roundabout. Lethal

[JMJR]

Originally Posted by JMJR

I sent a query on this roundabout , I'll post any reply.

•Should you have any particular queries or comments in relation to cycling in Dún Laoghaire you can contact us at cycling@dlrcoco.ie

So I sent this email to cycling@dlrcoco.ie on 27 Feb.

Hi
I write to ask if you have any information on what appears to be a new type of cycle path which traverses the circumference of the roundabout at eastern end of Upper Glenageary Road.
It seems to be segregated from the roadway in parts by a raised kerbstone.
My interest is on how it is to be used by both cyclists and other vehicles when finished and I wondered if there is to be some signalling system in place?

Regards,

John

ps I congratulate DLR and the forbearance of local residents on the development of the contraflow cycle path at the back of the church in Blackrock.
I make a return journey from Dublin city centre to Monkstown every week and this wonderful infrastructure means that I no longer have to use the Blackrock bypass and Monkstown Rd and have a more pleasant and safer journey as a result.

I received this reply today:

Hi John
Thanks for your email in relation to the new design at the Killiney Towers roundabout,
The roundabout has been designed in accordance with the 'National Cycle Manual 2010' recently published by the National Transport Authority, and takes account of best international practice. The aim of the design is to address the needs of pedestrians and cyclists. The design provides for a dedicated circulating cycle lane, that is seperated from the main vehicle circulating lane by high visibility kerbs. Vehicle speeds are slowed down by narrowing and realigning the approach and exit roads to the roundabout to incorporate sharper turning angles and minimum flares, and by reducing the circulating width.
The design does not incorporate a signalling system such as pedestrian lights.
Regards,


Regards
John

[BostonB]

Originally Posted by monument

With the roundabout: How many people giving out about the design have used it? ...

How is it working out.

I see in the phoenix park the first rounabout in the park at the zoo they've marked (paint only) a cycle lane thingy around the outside. I don't think they did this at the other roundabouts.

[tomasrojo]

Wasn't the general response of the cycling lobby groups to the National Cycle Manual 2010 rather negative?

[galwaycyclist]

Originally Posted by tomasrojo

Wasn't the general response of the cycling lobby groups to the National Cycle Manual 2010 rather negative?

Yes. I cannot help wondering if the gentleman who wrote the letter may have sought some assistance with the wording from the National Transport Authority.

[nomdeboardie]

Originally Posted by BostonB

How is it working out.

No bad experiences yet, though I've been through only once so far (and only passing one junction) .

In heavy motor traffic it could be a help getting on the roundabout (can just enter immediately as long as there aren't any cyclists and aren't any cars indicating to come off at the next junction, or you make sure not to race them to cross it; if taking the first exit, you're unrestricted in your own little world (in theory...)).

[le petit braquet]

Signs went up last week but they are just the standard cycle ones. I still think things would be approved with signage advising that cars should give way to cycles at exits. I'll try an email to DLR and see what happens.

[Cookie_Monster]

I don't suppose this cycle lanes meet the requirements for it to be fully legal and required use over the road lane does it?

[le petit braquet]

Originally Posted by Cookie_Monster

I don't suppose this cycle lanes meet the requirements for it to be fully legal and required use over the road lane does it?

I'm not an expert on chapter and verse of the regulations, but I think they do.

Was through there a few times yesterday afternoon and the optimum way of navigatiing its is to ride slowly, and assume that if you are approaching an exit with a car alongside, then it will will cut across in front of you. Despite my hif viz gilet , I was cut up on two occasions yesterday.

There is a particular problem if a cyclist enters from 12 o'clock to exit at 6 o'clock or later, simultaneously with a car, which intends leaving at 3. The car driver's attention is to their right, checking whether is safe to enter the roundabout and then as they are turning off quickly, they are not used to checking for cycle traffic on their left.

[BostonB]

The wiki article on them I linked to earlier suggested something similar.

I'm not saying it doesn't, work, I have no experience of them. Just that if you are used to taking the lane to stop people cutting you up, then putting the cyclist at the outside runs counter to that.

[galwaycyclist]

Originally Posted by JMJR

The roundabout has been designed in accordance with the 'National Cycle Manual 2010' recently published by the National Transport Authority, and takes account of best international practice. The aim of the design is to address the needs of pedestrians and cyclists.

The PRESTO EU program on cycling infrastructure has a fact sheet on roundabouts

http://velotransport.info/en/wp-cont...ersections.pdf

The PRESTO advice is written for countries with other legal systems and traffic laws and I don't necessarily endorse all their observations. However, it is useful to ask if the Killiney treatment would be considered "best practice" in PRESTO's analysis?

[Doctor Bob]

Originally Posted by le petit braquet

There is a particular problem if a cyclist enters from 12 o'clock to exit at 6 o'clock or later, simultaneously with a car, which intends leaving at 3. The car driver's attention is to their right, checking whether is safe to enter the roundabout and then as they are turning off quickly, they are not used to checking for cycle traffic on their left.

I've cycled on roundabouts like this in The Netherlands and Denmark, and they're designed in such a way that 'turning off quickly' simply isn't an option. That's the whole point of them- to replace old style free-flowing, wide flare / high deflection roundabouts with much tighter versions that force cars to slow down when entering and leaving the roundabout. In principle, each leg of the roundabout should behave like a T-junction on a straight road, so cyclists going 'straight on' should have priority over cars turning off (though, yes, I do acknowledge that many Irish drivers don't understand this as it applies to T-junctions, so presuming that they'll understand it on a roundabout may be a slight leap of faith).

[droidus]

I remember feeling particularly foolish when encountering a roundabout whilst cycling in Southern Holland. We were cycling on a beautiful segregated cycling path and stopped at the exit lane to give way to traffic, which also stopped to allow us to proceed. Took a few seconds to figure out what was going on, and the culture shock lasted for days.

[BostonB]

I wonder how the US style 4 way stop would work with cyclists and drivers here?

[Doctor Bob]

Do they have 'five way stops' in the US? In non-gridded (non-rectilinear) urban layouts?