Multilane Roundabout, who gives way?

Forums › Transport (cars, bikes and boats) › Multilane Roundabout, who gives way?

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20 posts

Geek

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#2661854 23-Feb-2021 15:18

I think it's too easy to overthink this on a forum post. In the real life, in a multi lane roundabout with a heavy traffic, you would only cautiously proceed into the left lane if you are turning left, and you would always feel like mess in there, even more so if you are turning right. Given that, when you turn right (the green car), the messiness will make you wait for the traffic from the right, no matter the lanes. So it might not be as nightmare as you think.

evnafets

537 posts

Ultimate Geek

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#2661876 23-Feb-2021 15:47

My 2 cents on this is that no, you should not enter the roundabout on the green path until there are no cars on the red path. i.e. both lanes coming from the right are clear.

Yes the general road rules say that you can, but as pointed out, this is a very non-standard example of a roundabout.

Stopping at the give way sign is one thing.

Stopping to "give way" to traffic while in the middle of the roundabout is completely another.

SATTV

1648 posts

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#2661877 23-Feb-2021 15:47

Red has to give way to green.

Green is in the left had lane and does not dross the centre lines of the roundabout, effectively going in a straight line.

Red has to cross the broken white lines, therefor a direction change so has to give way.

An overtaking or vehicle changing lanes has to give way.

John

Journeyman

1186 posts

Uber Geek

#2661878 23-Feb-2021 15:53

froob: There has to be an error in the design of the roundabout, surely? If you look at the next entry point, it says the right hand land is only allowed to turn right (and not go straight), which seems inconsistent with what the red car is apparently allowed to do. Maybe I'm missing something.

I hate multi-lane roundabouts...

Agreed. The green should be straight ahead only - it shouldn't be right turn as well. That marking is a stuff up. Roundabouts are never designed such that the two lanes will cross paths like this one. Correctly designed, cars shouldn't have to give way to the other once on the roundabout proper.

Hammerer

2476 posts

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#2661879 23-Feb-2021 15:54

Green crosses a centreline. It is a new centreline which starts halfway between the entry and exit. To cross it is still a lane change which is why green also has to give way.

traderstu

332 posts

Ultimate Geek

#2661885 23-Feb-2021 16:17

People, please read the document linked above. Everything is covered off in there.

Specifically, "Give way to all traffic that will cross
your path from your right as you
enter the roundabout." In our example the red car is going to cross the green cars path. The green car must give way.

Further, "At multi-lane roundabouts, you
need to approach and enter the
roundabout in the correct lane for
where you intend to exit." There is no suggestion that you should enter in the wrong lane then do a 450 at the next roundabout.

Actually, if everyone is indicating correctly there isn't a problem

Journeyman

1186 posts

Uber Geek

#2661889 23-Feb-2021 16:47

@traderstu - but you're describing is entering the roundabout. In this roundabout, the cars would already have entered the roundabout. So the rules of entry don't apply once on the actual roundabout. As I said - the markings have been stuffed up. Roundabouts aren't designed so that people have to give way once they are in the roundabout proper. The whole point of a roundabout is that it is a continuous flow.

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MadEngineer

4271 posts

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#2661966 23-Feb-2021 21:41

Journeyman:

@traderstu - but you're describing is entering the roundabout. In this roundabout, the cars would already have entered the roundabout. So the rules of entry don't apply once on the actual roundabout. As I said - the markings have been stuffed up. Roundabouts aren't designed so that people have to give way once they are in the roundabout proper. The whole point of a roundabout is that it is a continuous flow.

Exactly. Enter it correctly and there's no issue.

This simplicity applies everywhere. For every other intersection if you know you're turning right or if your next turn following is a right hand turn you chose the right hand lane by preference.

You're not on Atlantis anymore, Duncan Idaho.

driller2000

935 posts

Ultimate Geek

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#2661994 23-Feb-2021 23:12

Journeyman:

@traderstu - but you're describing is entering the roundabout. In this roundabout, the cars would already have entered the roundabout. So the rules of entry don't apply once on the actual roundabout. As I said - the markings have been stuffed up. Roundabouts aren't designed so that people have to give way once they are in the roundabout proper. The whole point of a roundabout is that it is a continuous flow.

100%

BOTH red and Green entered in the wrong entry lane - and had they both used the other entry lane instead, there would have been absolutely no issue or doubt for either of them.

Jase2985

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#2662031 24-Feb-2021 09:01

driller2000:

Journeyman:

@traderstu - but you're describing is entering the roundabout. In this roundabout, the cars would already have entered the roundabout. So the rules of entry don't apply once on the actual roundabout. As I said - the markings have been stuffed up. Roundabouts aren't designed so that people have to give way once they are in the roundabout proper. The whole point of a roundabout is that it is a continuous flow.

100%

BOTH red and Green entered in the wrong entry lane - and had they both used the other entry lane instead, there would have been absolutely no issue or doubt for either of them.

but the lane arrow marking say you can so they haven't entered in the wrong lane at all.

Senecio

2710 posts

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#2662134 24-Feb-2021 11:42

Who ever designed that roundabout and the associated road network needs taking out the back and given a good beating!.

hsvhel

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#2662179 24-Feb-2021 12:48

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traderstu

332 posts

Ultimate Geek

#2662187 24-Feb-2021 13:12

Senecio:

Who ever designed that roundabout and the associated road network needs taking out the back and given a good beating!.

To be fair, the roundabout was perfectly adequate when it was designed and built 20yrs ago (if my memory is correct). The problem is that Tga's population has nearly doubled since then. That it is no longer adequate has been acknowledged - hence the major upgrade planned at the moment.

CruciasNZ

879 posts

Ultimate Geek

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#2662257 24-Feb-2021 16:28

Give way to those in-front of you and those to the right of you as per generic rules. That said, I've seen quite a few dings on a reasonably new RAB here in CHCH with a similar layout, scenario is almost always the car on the right is slightly ahead but not to the point you can see their rear lights, so the driver in the right lane would have to slow down to let the left lane pass but probably didn't check over their shoulder and just used the mirrors

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Dairyxox

1594 posts

Uber Geek

#2663156 26-Feb-2021 15:16

I drive through here nearly every day and there are lots of accidents & near misses.

What's worse is when cars try to do this (Yellow):

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