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The proper use of roundabouts

2

Comments

  • Registered Users, Registered Users 2 Posts: 18,999 ✭✭✭✭murphaph


    kenmc wrote:
    my pet peeve is if for example we're coming into a 12-3-6-9 formation roundabout (i.e. as you enter there's a left exit at 90o, an exit straight through at 180o, and a right exit at 270 degrees) 2 lanes all over. I'm sitting in the right hand lane, to take the 270o exit, person beside me is taking the 180o exit, all should be well until the fu(ker decides to apex the roundabout like a rally driver and cut right across my front into my lane and then back out again. I'm seriously tempted to let some brand new car hit my 93 golf some day instead of backing off and laying on the horn - who's got more to lose in a crash do ya think? a nice shiny new one or me??? :)
    I f***ing hate those wa**ers.


  • Registered Users, Registered Users 2 Posts: 9,779 ✭✭✭MrPudding


    Here is a cool diagram:

    http://www.highwaycode.gov.uk/17.shtml#160

    I know it is from the mainland ;) but the same rules apply.

    MrP


  • Registered Users, Registered Users 2 Posts: 3,265 ✭✭✭DubTony


    Downtime wrote:
    IMHO He was well out of order, but you were too....

    Now if I am thinking of the same roundabout - the second one if you come down from Hunterswood after the shops? as far as I am aware there is only one lane going onto the roundabout there - although it is very wide, two lanes are NOT marked there.

    Downtime, you're spot on. I've actually had to go and check that roundabout and Ballycullen Rd. coming from Hunterswood has only one lane going on to the roundabout while all the others split into 2. Maybe that's what his problem was. Although it seems my interpretation of how to use a roundabout is correct, I may have been wrong in this case.

    Having said that, I do use it almost every day in the same manner, and always without incident.

    Thanks guys

    Tony


  • Closed Accounts Posts: 116 ✭✭Jefferson Darcy



    Regarding the 'Turning Right' methodology, I always use what is stated on this site. Especially with regard to remaining in the lane on the right. I find that in Dublin however, most drivers cut across into the left lane as they exit the roundabout. Not sure how many here are affected but if you've ever tried leaving the South County Business Park in Leopardstown during peak periods in the direction of the M50, you'll find that the plonkers who do this, render having two lanes completely useless. The racing line thing seriously annoys me.

    The majority of people don't bother indicating left prior to taking their exit either. If they had bothered to indicate right in the first then they simply leave the right indicator on.


  • Registered Users, Registered Users 2 Posts: 3,265 ✭✭✭DubTony


    MrPudding wrote:
    Here is a cool diagram:

    http://www.highwaycode.gov.uk/17.shtml#160

    I know it is from the mainland ;) but the same rules apply.

    MrP

    :D Can you imagine the carnage if they put two mini roundabouts together like that anywhere in Ireland?

    Tony


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  • Registered Users, Registered Users 2 Posts: 9,779 ✭✭✭MrPudding


    DubTony wrote:
    :D Can you imagine the carnage if they put two mini roundabouts together like that anywhere in Ireland?

    Tony
    It would be amusing!

    MrP


  • Registered Users, Registered Users 2 Posts: 17,213 ✭✭✭✭therecklessone


    On a related note:

    From Feb 2002 Rules of the Road

    Roundabouts:
    • IF LEAVING BY THE FIRST EXIT approach and enter the roundabout in the left-hand lane signalling a left turn and proceed to leave the roundabout at that exit.
    • IF LEAVING BY THE SECOND EXIT approach and enter the roundabout in the left-hand lane but do not signal until you have passed the first exit, then signal a left turn and leave at the next exit.
    • IF LEAVING BY ANY SUBSEQUENT EXIT approach and enter the roundabout in the right hand lane signalling a right turn. Keep in the right hand lane (i.e. the lane next to the centre). As you pass the exit before the one you intend to leave by, signal a left turn and, when your way is clear, move to the other lane and leave at the desired exit.

    The accompanying diagrams depict a slightly different picture, in that they refer to:
    1. Making a left turn
    2. Travelling straight ahead
    3. Making a right turn

    Not all roundabouts are of the 12-3-6-9 formation. So which applies?

    Take as an example the roundabout I described in post 22 above (map here), where the 3rd exit is slightly right of straight ahead @205 degrees. Now when I approach that roundabout meaning to take exit 3, I stay in the right lane, indicate right until past exit 2 then indicate left and exit the roundabout (on to the right hand lane rather than the left)

    What about a roundabout whoch only has 3 exits? I pass one regularly on the road along the side of Dublin airport from the Coachman's to St Margarets. The 2nd exit as you approach from the Coachman's is in the 270 degree position. Do I indicate right as I approach the roundabout then left when passed exit 1, or not indicate apporaching the roundabout then left after exit 1?


  • Closed Accounts Posts: 132 ✭✭Shane™


    DubTony wrote:
    Downtime, you're spot on. I've actually had to go and check that roundabout and Ballycullen Rd. coming from Hunterswood has only one lane going on to the roundabout while all the others split into 2. Maybe that's what his problem was. Although it seems my interpretation of how to use a roundabout is correct, I may have been wrong in this case.

    Having said that, I do use it almost every day in the same manner, and always without incident.

    Thanks guys

    Tony

    Sorry Downtime was way off!

    If you are going straight and there are no markings on the road to indicate lanes then you keep to the left side, even if it's only one lane, it's to show the driver behind what you intend doing.

    It really p!sses me off when people use a round about wrong, now I understand what the problem is, it's not that they are ar$eholes, it's just that they are stupid, thanks guys for clearing this up.


  • Closed Accounts Posts: 132 ✭✭Shane™


    What about a roundabout whoch only has 3 exits? I pass one regularly on the road along the side of Dublin airport from the Coachman's to St Margarets. The 2nd exit as you approach from the Coachman's is in the 270 degree position. Do I indicate right as I approach the roundabout then left when passed exit 1, or not indicate apporaching the roundabout then left after exit 1?


    You do the first, indicate right the left when you pass the first exit.

    The rule is: Any exit beyond the 90° mark is treated as a third exit.

    There are two of these round abouts in clondalkin right beside each other, but I have to say most people use them right (except when they forget to indicate :mad: )


  • Registered Users, Registered Users 2 Posts: 17,213 ✭✭✭✭therecklessone


    You do the first, indicate right the left when you pass the first exit.

    The rule is: Any exit beyond the 90° mark is treated as a third exit.

    There are two of these round abouts in clondalkin right beside each other, but I have to say most people use them right (except when they forget to indicate :mad: )

    I take it you mean beyond the 180 degree mark? And if its the rule, where is it in the Rules of the Road?


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  • Closed Accounts Posts: 132 ✭✭Shane™


    Yes that is what I meant 180

    It's not in the rules of the road book, but my old man is an ambulance driver and had to take loads of advanced driving courses, this is what they said.

    He and a coworker called up about this as it led to some confusion, if a round about has it's second exit beyond 180, which rule applies? apparently there isn't an answer, don't know who he called, but they told him a tester won't call on it.


  • Registered Users, Registered Users 2 Posts: 17,213 ✭✭✭✭therecklessone


    if a round about has it's second exit beyond 180, which rule applies? apparently there isn't an answer, don't know who he called, but they told him a tester won't call on it.

    :D

    Therein lies the problem with driving standards in this country (not directed at you or your old man). So I apply my interpretation, you and your apply your own. Result? Nobody has a clue who'll do what... :rolleyes:

    Rules of the Road again:

    Remember that signals are merely indications of intent. They do not confer right of way. When in doubt, play safe - YIELD

    Best bit of advice in it.


  • Closed Accounts Posts: 132 ✭✭Shane™


    :D

    Therein lies the problem with driving standards in this country (not directed at you or your old man). So I apply my interpretation, you and your apply your own. Result? Nobody has a clue who'll do what... :rolleyes:

    Rules of the Road again:

    Remember that signals are merely indications of intent. They do not confer right of way. When in doubt, play safe - YIELD

    Best bit of advice in it.

    That's exactly my fathers point, you have to be safe because you don't know what people are going to do.

    But in this instance the other driver (as in the guy who didn't post) was clearly wrong, he indicated right, and failed to observe that there was a car on his inside, this happens to me a lot so I can understand the situation, although no-one has ever beeped at me.

    As for the other rule I mentioned it's a guide not a rule, what you pointed out is the rule, and when it cannot be applied to a particular case, the latter should be used, like you said with a spread round about with 3 roads.


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 95,396 Mod ✭✭✭✭Capt'n Midnight


    Really annoys me that roundabout in this country are so slow compared to foreign ones. Over there they use them fairly correctly and don't have to come to a virtual stop if it looks like anyone else might be on the roundabout at the same time as you.

    Recently I've been in the left lane, not indicating since I wanted to go straight and had a muppet behind me pull up in the right lane beside me so of course I could not see the indicators. And of course he cut me off at the other side - going straight, no indicators when leaving the roundabout.

    If people here got in to the correct lane and indicated properly then we could filter in and out between the traffic crossing the roundabout, instead they act as choke points where you dare not go more than a few kph in case you have to jam on..


  • Closed Accounts Posts: 3,359 ✭✭✭cyclopath2001


    you dare not go more than a few kph in case you have to jam on..

    I think that people entering and going too fast around roundabouts causes congestion as it makes it more difficult for peolpe to merge in. The safety gaps have to be greater & people have to wait longer to find a safe gap to enter.

    Another part of this is people rushing on to roundabouts without seeing if their exit is clear & then blocking the exit of others.


  • Registered Users, Registered Users 2 Posts: 315 ✭✭wideband


    hi all,

    when a road approaching a roundabout breaks into two lanes Both left and right lanes can travel straight through......

    the only point to remember is you must give way to vehicles coming from the right unless road marking show otherwise.

    Signal left as you approach the exit you wish to take......simple enough :eek:


  • Registered Users, Registered Users 2 Posts: 1,171 ✭✭✭causal


    As the recklessone pointed out the problem is that there are two different methodolagies for dealing with roundabouts.
    They are incompatible, but used interchangeably in the rules of the road, add to that too many road users who aren't aware of either system:

    One system uses exit number: exit 1, exit 2, exit 3, ...
    Other system uses: left turn, straight through, right turn (this is roughly equivalent to the clock (6-9-12-3) and compass (180-270-360-90) systems)

    That's before you even get to deciding which lane to take, nevermind which indicator to use.

    Another problem arises, as highlighted in Shanes post, is that advanced drivers are taught to be flexible and use the indication that will let other road users know their intention.

    imho the simplest system to use is the 'exit number' methodology - because there is no driver interpretation involved.
    This way the lane choice and indication to use are specific and as described in the rules of the road - which incidentally most ppl here don't know correctly :p

    As threcklessone quoted:

    "IF LEAVING BY THE FIRST EXIT approach and enter the roundabout in the left-hand lane signalling a left turn and proceed to leave the roundabout at that exit.
    IF LEAVING BY THE SECOND EXIT approach and enter the roundabout in the left-hand lane but do not signal until you have passed the first exit, then signal a left turn and leave at the next exit.
    IF LEAVING BY ANY SUBSEQUENT EXIT approach and enter the roundabout in the right hand lane signalling a right turn. Keep in the right hand lane (i.e. the lane next to the centre). As you pass the exit before the one you intend to leave by, signal a left turn and, when your way is clear, move to the other lane and leave at the desired exit.
    "

    - add to this the case where you are taking the second exit and there 2 lanes on the approach and there are two lanes on the second exit, then:
    if you enter from the left hand lane - exit on the left hand lane
    if you enter from the right hand lane - exit on the right hand lane

    Of course there are exceptions to these rules on specific roundabouts where road markings dictate otherwise. But I think it's best to have a rule that has some exceptions - rather than have everyone make up their own rules.

    causal


  • Registered Users, Registered Users 2 Posts: 1,171 ✭✭✭causal


    wideband wrote:
    when a road approaching a roundabout breaks into two lanes Both left and right lanes can travel straight through......
    ONLY IF there are also two exits on the second exit!!

    the only point to remember is you must give way to vehicles coming from the right unless road marking show otherwise.
    What road markings might they be?
    Approaching a roundabout (which is the topic here) you always have to yield to traffic already on the roundabout (unless there happens to be a Garda on point duty, a school 'lollypop person', or a person in charge of animals, who signal otherwise)
    Even if the roundabout is controlled by traffic lights - and you have a green light - you still have to yield to the traffic already on the roundabout.

    Signal left as you approach the exit you wish to take......simple enough :eek:
    Simple you say! I'd score you 66% on the 3 points you made ;)


    causal


  • Closed Accounts Posts: 8,259 ✭✭✭RicardoSmith


    The problem is that the rules are designed for large multi lane roundabouts. Whereas mostof the roundabouts that I see are badly designed and usually too small for the junction (and the rules). Then theres roundabouts like the one at the Blanchardstown exit on the M50 where lanes suddenly change from 2 lanes to 3 and then back again as you drive around it. Also it has traffic lights on it too, plus buslanes leading up to and from it.

    Then add to this bad drivers and bad driving.


  • Registered Users, Registered Users 2 Posts: 17,213 ✭✭✭✭therecklessone


    Then theres roundabouts like the one at the Blanchardstown exit on the M50 where lanes suddenly change from 2 lanes to 3 and then back again as you drive around it. Also it has traffic lights on it too, plus buslanes leading up to and from it.

    Don't get me started on them!

    Actually, now you have...

    The roundabout at the main entrance to Dublin airport is a nighmare. Confused drivers coming off the M1 thinking its the way to Dublin go from a one-lane off-ramp to four lanes to a three lane entrance to said roundabout that changes to a two-lane roundabout once you're passed exit 2. And its partially signal controlled!

    I got rear ended last year after I had to brake to avoid a guy who went the whole way around the roundabout in the outside lane while I was positioned in the inside lane for the 3rd exit. Got hit from behind by a van while the other gob****e stopped at the lights, realised what he'd caused, then hightailed it.

    Its road design like this thats increasing the frequency of accidents and leading to poor driving IMHO. Its impossible to apply standard driving techniques when you're encountering such engineering stupidity.


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  • Registered Users, Registered Users 2 Posts: 315 ✭✭wideband


    Casual,

    when a road approaching a roundabout breaks into two lanes Both left and right lanes can travel straight through......You say
    casual wrote:
    "ONLY IF there are also two exits on the second exit!!"
    OMG...i hope i done meet you on the road...you are so wrong casual :eek:


    The following is now quoted correctly and refers to a similar situation to DubTony post with the two cars on the roundabout.... and not about yielding to traffic already on the roundabout etc, etc.
    wideband wrote:
    the only point to remember is you must give way to vehicles coming from the right

    ok my original post mislead you here on the road markings.....these are the markings entering the roundabout with two lanes....which are somethime inplace to direct traffic left, right or straight through......

    would you please remark my post now, tks casual :D


  • Registered Users, Registered Users 2 Posts: 68,173 ✭✭✭✭seamus


    wideband wrote:
    OMG...i hope i done meet you on the road...you are so wrong casual :eek:
    Actually, the ROTR says "[When travelling straight ahead through a roundabout] Stay in the left hand lane, but do not indicate 'left' until you have passed the first exit. Where conditions dictate otherwise, you may [enter in the right-hand lane and leave the roundabout in the right-hand lane]"
    Now, interpreting that, there could be two meanings:

    1. Always use the left-hand lane when going straight unless you are unable to use this lane and you have room to use the right-hand lane.
    2. You may use the right-hand lane, provided the conditions (width of the road, no. of available exits, traffic on the roundabout) allow.

    Two vehicles exiting a single lane roundabout doesn't invoke the "Give way from your right" rule. That rule refers to traffic travelling *from* your right, not travelling *on* your right. You'll see at the exit of many roundabouts, a kind of triangle of lane on the right, with a "keep left" arrow in it. This signifies that traffic in the right-hand lane is merging into the left-hand lane, and therefore are required to give way.

    See my crude little drawing attached. Green is roundabout/verge, grey are traffic islands, and red is road markings (including "Keep Left" arrow). The blue line indicates a width of one lane. If you've never seen this before, I ask you to be more observant.


  • Registered Users, Registered Users 2 Posts: 6,475 ✭✭✭highdef


    Does anyone regularly joing the N3 outbound at the roundabout at the end of Auburn Avenue? Mother of fupping god! There are two big signposts showing that the left lane is left and straight only and the right lane is straight and right only and still the best part of 50% of cars in the right lane still turn left in the right lane, the majority not even idicating to do so. I am just waiting for me to be involved in a crash there. So many near misses. A blast of the horn is nearly always needed at that roundabout. I've seen the results of several accidents - Due to the relatively low speeds, they are usually not bad enough to cause injury but a side swipe of a car does some amount of damage. F8cking stupid ignorant plicks!! :mad:


  • Registered Users, Registered Users 2 Posts: 3,265 ✭✭✭DubTony


    seamus wrote:

    1. Always use the left-hand lane when going straight unless you are unable to use this lane and you have room to use the right-hand lane.
    2. You may use the right-hand lane, provided the conditions (width of the road, no. of available exits, traffic on the roundabout) allow.

    Two vehicles exiting a single lane roundabout doesn't invoke the "Give way from your right" rule. That rule refers to traffic travelling *from* your right, not travelling *on* your right. You'll see at the exit of many roundabouts, a kind of triangle of lane on the right, with a "keep left" arrow in it. This signifies that traffic in the right-hand lane is merging into the left-hand lane, and therefore are required to give way.

    I'm with Seamus on this. Although technically I shouldn't have "created" the second lane, I feel that the other guy should have positioned his car properly (and of course his indicator shouldn't have been on at all at that point) and certainly should have given way without all the argy-bargy as I was slightly ahead of him on the roundabout.

    Anyway, it shows that there's a lot of driver educaction needed when it comes to roundabouts. (And driving in general)
    Does anyone remember years back when there were ads run on tv to show us how to negotiate junctions properly, and to "drive left, pass right"?

    Maybe it's time the DOE brought them back. Surely RTE, as a public service broadcaster, would be required to run a few of these type of ads every week without expense to the state. Now that would be a good public service.

    Tony


  • Registered Users, Registered Users 2 Posts: 3,265 ✭✭✭DubTony


    Does anyone regularly joing the N3 outbound at the roundabout at the end of Auburn Avenue? Mother of fupping god! There are two big signposts showing that the left lane is left and straight only and the right lane is straight and right only and still the best part of 50% of cars in the right lane still turn left in the right lane, the majority not even idicating to do so.

    Similar scenario at Spawell roundabout coming from Wellington Lane. The roundabout's been there for ages but when Spawell bridge was opened, traffic continued to use the roundabout in the same way. i.e. 2 lanes of traffic on Wellington would turn right (270) onto Tallaght By-Pass. Traffic going onto the new bridge always used the laft lane. This worked very well, as By-Pass is the main road very little of that traffic used the bridge initially.

    Then some bright spark in SDCC decided to erect a sign telling us how to use the roundabout. Good idea and should be done a lot lore often. But they decided to control traffic on the roundabout in the "usual" manner instead of observing what actually happened there and "go with the flow". Now it's left lane to go left and straight and right lane to go straight and right.

    Every day, without fail, somebody from the left lane comes round the roundabout and goes up Tallaght By-Pass.

    TIP: Don't EVER use the right lane there to go straight onto Spawell Bridge; especially when it's busy.

    If the natural flow of traffic had been taken into consideration at that roundabout, and the sign indicated so, traffic from Wellington lane would get onto Tallaght By-Pass a lot quicker and there would be little risk of accidents. Obviously this would be an exception to the rule, but well signposted junctions of this type can work.

    Tony


  • Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 95,396 Mod ✭✭✭✭Capt'n Midnight


    I think that people entering and going too fast around roundabouts causes congestion as it makes it more difficult for peolpe to merge in. The safety gaps have to be greater & people have to wait longer to find a safe gap to enter.
    I'd argue that most of the time I've to wait until I see someone turning thier wheels to leave the roundabout before I can enter, indicators just seem to be an indication that your light bulbs work. It's much easier to merge if you are moving and if you can rely on other people to indicate clearly what they are doing. Too many times people exit without indicating left and yet another gap has gone. And we've all seen someone indicate the opposite way to the way the move.
    Another part of this is people rushing on to roundabouts without seeing if their exit is clear & then blocking the exit of others.
    and all junctions in general , love the way the Roundabout at the end of the Nangor Road has the yellow box markings on it and the way it's ignored.. And then there is the M50 roundabout at palmerstown, Southbound M50 traffic turning right tends to cause large backups on traffic heading East..

    Back on the subject of right hand lanes - rules of road say you can only go straight through if there is an arrow in the lane telling you it is allowed.

    There are so many mini roundabouts at T junctions that an Ad campaign is needed to explain thier usage and if you are supposed to indicate when taking the second exit or if it depends on whether you are entering from the top or bottom of the T


    OT - can people who use Hazard warning lights remember that using them means you indicators can't be seen, seen muppets with those on roundabouts :rolleyes:


  • Closed Accounts Posts: 8,259 ✭✭✭RicardoSmith


    Does anyone regularly joing the N3 outbound at the roundabout at the end of Auburn Avenue? Mother of fupping god! There are two big signposts showing that the left lane is left and straight only and the right lane is straight and right only and still the best part of 50% of cars in the right lane still turn left in the right lane, the majority not even idicating to do so. I am just waiting for me to be involved in a crash there. So many near misses. A blast of the horn is nearly always needed at that roundabout. I've seen the results of several accidents - Due to the relatively low speeds, they are usually not bad enough to cause injury but a side swipe of a car does some amount of damage. F8cking stupid ignorant plicks!! :mad:

    The reason for that is that noone coming down auburn avenue lets anyone out from the road on the left coming from bradys garage before that roundabout. 50% of the time they block the roundabout. So in order to get out the people coming from bradys garage have to go into the right lane even though they want to turn left. The traffic Island there now stops people turning right and makes the queue about twice as long as it needs to be.

    All you need to do is indicate right when you are in the left lane and squeeze the person in the right lane. I've never had any problems there other than people breaking the lights on the roundabout and have been nearly hit a few times by such morons.

    I'm glad I don't have to go that way though.


  • Registered Users, Registered Users 2 Posts: 17,213 ✭✭✭✭therecklessone



    Back on the subject of right hand lanes - rules of road say you can only go straight through if there is an arrow in the lane telling you it is allowed.

    No they don't. I have the Feb 2002 version of the Rules of the Road open beside me, and the only mention of going straight ahead in the right hand lane is as seamus quoted above. Check it out.

    DubTony, if you're still reading this thread, can you check my first post to the thread and clear up the details? Please and thanks.


  • Registered Users, Registered Users 2 Posts: 18,276 ✭✭✭✭A Dub in Glasgo


    Lane discipline in Ireland is appalling, not just at Roundabouts


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  • Registered Users, Registered Users 2 Posts: 315 ✭✭wideband


    Seamus....are you quoting me as correct or what!!........as i have said, you can use both lanes and you then repeat it??
    I was looking at casuals post "you can only use the right lane if there are are also two exits on the second exit!!"......(when entering how do you know how many are exiting)

    seamus wrote:
    Two vehicles exiting a single lane roundabout doesn't invoke the "Give way from your right" rule. That rule refers to traffic travelling *from* your right, not travelling *on* your right. You'll see at the exit of many roundabouts, a kind of triangle of lane on the right, with a "keep left" arrow in it. This signifies that traffic in the right-hand lane is merging into the left-hand lane, and therefore are required to give way.
    Seamus...you must always "Give way from your right".....if seen this so often with muppets flying up the inside trying to bet you through the exit and end up pushing you over to the wrong lane.


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