Do you do this at round about ????

ontheroad1970

Bigphil1474 said:

Nope. Depending on the size of the roundabout, but for a normal road roundabout, turning right is 90 degrees, coming back on yourself is 180, turning left by going right round is 270, and going back to where you were facing in the first place is 360 degrees.
I've never done the go round the roundabout trick, i think it's rude, lazy and selfish, but each to their own.

A politician doing an about turn is often said to be 'doing a 360'.  Going straight ahead is 180.

Username03725

To answer the question, no I wouldn't. It's queue jumping by any other name. If you have no problems doing that that's between you and your conscience. If all of the left-turners started randomly choosing to be in the left or right lane it would soon turn to chaos, ergo you're relying on everyone else doing the right thing so that you can take advantage of that. 

To reference an earlier post, this question is completely separate to not correctly merging in turn approaching a road lane closure or width restriction.

Car_54

Username03725 said:

To answer the question, no I wouldn't. It's queue jumping by any other name. If you have no problems doing that that's between you and your conscience. If all of the left-turners started randomly choosing to be in the left or right lane it would soon turn to chaos, ergo you're relying on everyone else doing the right thing so that you can take advantage of that. 

To reference an earlier post, this question is completely separate to not correctly merging in turn approaching a road lane closure or width restriction.

There is nothing in the Highway Code against queue-jumping. Or indeed in the Ten Commandments, if you want to be moralistic.

On a practical level, if "all of the left-turners started randomly choosing to be in the left or right lane" it would simply result in two queues instead of one. Where would the chaos ensue?

NBLondon

Car_54 said:

Bigphil1474 said:

Nope. Depending on the size of the roundabout, but for a normal road roundabout, turning right is 90 degrees, coming back on yourself is 180, turning left by going right round is 270, and going back to where you were facing in the first place is 360 degrees.
I've never done the go round the roundabout trick, i think it's rude, lazy and selfish, but each to their own.

Your driving may be good, but your maths is very dodgy.

Left is 90 degrees, ahead is 180, right is 270. Doing what the OP suggests is 450.

It's perfectly legal and I've done it. 

Depends on your frame of reference...

BigPhil is counting clockwise from direction of travel - rotate 90 degrees and you have turned right.  Rotate 270 degrees clockwise (or 90 degrees anti-clockwise) and you have turned left.    Don't rotate (0 degrees) and you have gone straight on.

Car_54 is counting as if the roundabout is a protractor with 0 degrees at point of entry, 90 degrees is left exit, 180 is the opposite side etc. 

To answer the OP - I have done it a few times but only at one particular roundabout where the left-hand lane is so busy at peak times that it was impossible to join that queue - since it was already past the point where I was joining the road and I had to join in the right-hand lane or cause gridlock.

TELLIT01

I've used the right hand lane and gone around to avoid a long queue very occasionally. 

Manxman_in_exile

photome said:

Manxman_in_exile said:

If you are going left don't you need to do (about) 270 degrees?  If you do 360 you'd be going straight on... 

I've done both 270 and 360. (360 when you can only go straight on in the left-hand lane and it's blocked).

Is it not allowed?

if you do 270  you would be turning right, to do what the Op suggests it would be more like 450

In answer to the OP, yes I would do it and have done it

Eh?  Has trigonometry changed since I was at school?

Manxman_in_exile

Car_54 said:

Bigphil1474 said:

Nope. Depending on the size of the roundabout, but for a normal road roundabout, turning right is 90 degrees, coming back on yourself is 180, turning left by going right round is 270, and going back to where you were facing in the first place is 360 degrees.
I've never done the go round the roundabout trick, i think it's rude, lazy and selfish, but each to their own.

Your driving may be good, but your maths is very dodgy.

Left is 90 degrees, ahead is 180, right is 270. Doing what the OP suggests is 450.

It's perfectly legal and I've done it. 

EH?

Left is only 90 degrees if you are able to turn directly left at the roundabout.  But you can't do that here because left is blocked so you have to go around the roundabout to the right. 

Therefore to turn right after getting on the roundabout you turn 90 degrees; to return in the direction you have come from is a 180; to turn LEFT by going to the right around the roundabout is a 270.

I have a maths O-level and know this...

facade

Manxman_in_exile said:

photome said:

Manxman_in_exile said:

If you are going left don't you need to do (about) 270 degrees?  If you do 360 you'd be going straight on... 

I've done both 270 and 360. (360 when you can only go straight on in the left-hand lane and it's blocked).

Is it not allowed?

if you do 270  you would be turning right, to do what the Op suggests it would be more like 450

In answer to the OP, yes I would do it and have done it

Eh?  Has trigonometry changed since I was at school?

You have to make 1 and a quarter full circles of the roundabout to turn left, which is 360 + 90 = 450 degrees.

TheMilkmansDad

facade said:

Manxman_in_exile said:

photome said:

Manxman_in_exile said:

If you are going left don't you need to do (about) 270 degrees?  If you do 360 you'd be going straight on... 

I've done both 270 and 360. (360 when you can only go straight on in the left-hand lane and it's blocked).

Is it not allowed?

if you do 270  you would be turning right, to do what the Op suggests it would be more like 450

In answer to the OP, yes I would do it and have done it

Eh?  Has trigonometry changed since I was at school?

You have to make 1 and a quarter full circles of the roundabout to turn left, which is 360 + 90 = 450 degrees.

but the car is not doing a full circle is it? And you are turning right at the roundabout not left - so (assuming a roundabout with 4 exits at equal point), straight on (2nd exit)would be zero (no turns). Exit 3 the car will have turned 90 degrees, back on yourself to turn 4 would be 180 degrees - 1st junction would be + 90. So 180 + 90 = 270 degrees for the cars perspective.

Form he roundabouts perspective it would be different as you would indeed have gone full 360 + 90 = 450.

Manxman_in_exile

facade said:

Manxman_in_exile said:

photome said:

Manxman_in_exile said:

If you are going left don't you need to do (about) 270 degrees?  If you do 360 you'd be going straight on... 

I've done both 270 and 360. (360 when you can only go straight on in the left-hand lane and it's blocked).

Is it not allowed?

if you do 270  you would be turning right, to do what the Op suggests it would be more like 450

In answer to the OP, yes I would do it and have done it

Eh?  Has trigonometry changed since I was at school?

You have to make 1 and a quarter full circles of the roundabout to turn left, which is 360 + 90 = 450 degrees.

But turning what you describe as a full circle is NOT turning through 360 degrees, it's only 180.

Try a thought experiment...

Stand in the middle of your room facing the window.  Turn around on the spot to the right for180 degrees.  You are now facing the wall (or whatever) that is opposite your window, and you are facing in the opposite direction from which you started.  Turn another 90 degrees to your right and you are now facing left from your starting position and have turned 270 degrees.

If you turn 360 degrees right from your starting position, you end up facing in the same direction you started.  If you turn a further 90 degrees right (to get your 450 degrees) you are now facing right, not left.

(Now I understand why people have to use satnavs... )