Undertaking....
Discussion
911hope said:
Cliftonite said:
Pica-Pica said:
All are confusing compass point relative positioning and object rotation. Different things.
Happens every time the subject comes up.Usually goes on for pages and pages . . .
911hope said:
911hope said:
Cliftonite said:
Pica-Pica said:
All are confusing compass point relative positioning and object rotation. Different things.
Happens every time the subject comes up.Usually goes on for pages and pages . . .
If it's the compass thing. Your point being...?
Graveworm said:
It doesn't help because despite it being pointed out many times, you keep describing the relative aspect of the car, rather than how far it has driven around the roundabout. That is explicitly what I wrote and what is being discussed.
When it arrives at exit 1 it has travelled 90 degrees at the straight on point 180, at the right turn 270 and back at the origin 360. If it returns the way it came the car has indeed rotated by 180 degrees but had to drive 360 degrees around the roundabout to achieve it. If it parked up facing in any direction never to move again, it would still have driven 360 degrees around the roundabout. Likewise if was doing doughnuts the whole time the car could have rotated many times - still only once around the roundabout.
How do you describe how far around a circle or orbit anything else has travelled, clock hands, race cars, planets etc. Planets are indeed always rotating about their own axis, but how often and how far, like the car is irrelevant when describing their orbit. A full circuit is 360 degrees.
https://youtu.be/ws37b-7UrJk?feature=shared
If you think doing a U-turn round a roundabout is a full orbit and hence 360degrees, what would doing a full lap and go straight on be?When it arrives at exit 1 it has travelled 90 degrees at the straight on point 180, at the right turn 270 and back at the origin 360. If it returns the way it came the car has indeed rotated by 180 degrees but had to drive 360 degrees around the roundabout to achieve it. If it parked up facing in any direction never to move again, it would still have driven 360 degrees around the roundabout. Likewise if was doing doughnuts the whole time the car could have rotated many times - still only once around the roundabout.
How do you describe how far around a circle or orbit anything else has travelled, clock hands, race cars, planets etc. Planets are indeed always rotating about their own axis, but how often and how far, like the car is irrelevant when describing their orbit. A full circuit is 360 degrees.
https://youtu.be/ws37b-7UrJk?feature=shared
Edited by Graveworm on Monday 25th September 11:25
It is twice the manoeuve of the U-turn, so would you call this 720degrees?
PhilAsia said:
911hope said:
911hope said:
Cliftonite said:
Pica-Pica said:
All are confusing compass point relative positioning and object rotation. Different things.
Happens every time the subject comes up.Usually goes on for pages and pages . . .
If it's the compass thing. Your point being...?
(Hamlet: Act2. Scene2)
911hope said:
Graveworm said:
It doesn't help because despite it being pointed out many times, you keep describing the relative aspect of the car, rather than how far it has driven around the roundabout. That is explicitly what I wrote and what is being discussed.
When it arrives at exit 1 it has travelled 90 degrees at the straight on point 180, at the right turn 270 and back at the origin 360. If it returns the way it came the car has indeed rotated by 180 degrees but had to drive 360 degrees around the roundabout to achieve it. If it parked up facing in any direction never to move again, it would still have driven 360 degrees around the roundabout. Likewise if was doing doughnuts the whole time the car could have rotated many times - still only once around the roundabout.
How do you describe how far around a circle or orbit anything else has travelled, clock hands, race cars, planets etc. Planets are indeed always rotating about their own axis, but how often and how far, like the car is irrelevant when describing their orbit. A full circuit is 360 degrees.
https://youtu.be/ws37b-7UrJk?feature=shared
It's 540
If you think doing a U-turn round a roundabout is a full orbit and hence 360degrees, what would doing a full lap and go straight on be?When it arrives at exit 1 it has travelled 90 degrees at the straight on point 180, at the right turn 270 and back at the origin 360. If it returns the way it came the car has indeed rotated by 180 degrees but had to drive 360 degrees around the roundabout to achieve it. If it parked up facing in any direction never to move again, it would still have driven 360 degrees around the roundabout. Likewise if was doing doughnuts the whole time the car could have rotated many times - still only once around the roundabout.
How do you describe how far around a circle or orbit anything else has travelled, clock hands, race cars, planets etc. Planets are indeed always rotating about their own axis, but how often and how far, like the car is irrelevant when describing their orbit. A full circuit is 360 degrees.
https://youtu.be/ws37b-7UrJk?feature=shared
It's 540
Edited by Graveworm on Monday 25th September 11:25
It is twice the manoeuve of the U-turn, so would you call this 720degrees?
You are still not describing what was being discussed and what I explicitly said "Driving around the roundabout." You still seem to be describing how many rotations the car makes, or the direction it's travelling.
It's not doing a U turn, it's driving all around the roundabout.
It may be they they then drive off in the opposite direction to that they arrived from, in an effective U turn in which case the car has turned through 180 degrees and the relative direction of travel is also 180 degrees to that, when they joined the roundabout. But they also could continue around, they also could stop and never travel any further. There is still a way, to describe that position on the roundabout, that's independent of their direction of travel or the direction they are facing. If it's in degrees it's 360.
How do you describe how far around the roundaboutthey traveled when they first arrive at the halfway point? Not what direction are they are travelling, not which way are they are facing, they can both be described separately, Just how far around the roundabout have they traveled?
https://www.bodyguardsdriving.co.uk/section783077_...
Edited by Graveworm on Sunday 1st October 02:02
waremark said:
Zeeky said:
I agree with this but if the queue is to go striaght on I would use lane 2 to circumvent the roundabout to leave at the first exit. For me the question is, am I joining free-flowing traffic/ empty road (which I think is not inconsiderate) or am I simply moving myself further up the queue (which I think, is)?
Suppose you knew a short cut-through to avoid the roundabout - would there be anything even vaguely questionable about using it? Is taking the right lane and circumnavigating the roundabout really different from that? Both end up with the queueing vehicles one further back on the new road.However tempting it is to pass MLMs on the left I avoid doing it because 1. There is a chance they will suddenly remember how to drive and drift into my lane. 2. Nowadays it's the sort of thing some people would umbrage to and you'd find some nutter tailgating you or doing something moronic. 3. I trust my ability to safely move across one or two lanes.
Generally there is no valid reason to do it apart from making a point, which (especially if you are traveling with passengers) is no reason to risk 1 or 2 occurring.
Generally there is no valid reason to do it apart from making a point, which (especially if you are traveling with passengers) is no reason to risk 1 or 2 occurring.
Tim Cognito said:
However tempting it is to pass MLMs on the left I avoid doing it because 1. There is a chance they will suddenly remember how to drive and drift into my lane. 2. Nowadays it's the sort of thing some people would umbrage to and you'd find some nutter tailgating you or doing something moronic. 3. I trust my ability to safely move across one or two lanes.
Generally there is no valid reason to do it apart from making a point, which (especially if you are traveling with passengers) is no reason to risk 1 or 2 occurring.
But there is a reason to do it - which is to shorten your journey time by avoiding being held up by s slower vehicle in front of that won't move over to let you past.Generally there is no valid reason to do it apart from making a point, which (especially if you are traveling with passengers) is no reason to risk 1 or 2 occurring.
I have been undertaking for years now and see no issue with it, as long as it is not done aggressively or with quick lane changing, I tend to sit in the inside if I can, maybe flash once to let them know I am there, and give an opportunity to move over, they rarely do, and therefore if I can I will slowly edge past.
I see no issue with it as long as it is done with care.
For some reason it now seems de riguer to use the second lane as the car lane, leaving the inside lane as a sort of slip and lorry lane, which is total nonsense.
Oddly enough I spent a few days abroad and in lesser populated areas a few weeks back and the issue was far less common.
I see no issue with it as long as it is done with care.
For some reason it now seems de riguer to use the second lane as the car lane, leaving the inside lane as a sort of slip and lorry lane, which is total nonsense.
Oddly enough I spent a few days abroad and in lesser populated areas a few weeks back and the issue was far less common.
Tim Cognito said:
However tempting it is to pass MLMs on the left I avoid doing it because 1. There is a chance they will suddenly remember how to drive and drift into my lane. 2. Nowadays it's the sort of thing some people would umbrage to and you'd find some nutter tailgating you or doing something moronic. 3. I trust my ability to safely move across one or two lanes.
Generally there is no valid reason to do it apart from making a point, which (especially if you are traveling with passengers) is no reason to risk 1 or 2 occurring.
1. Used to be a concern for me but now I just wonder how these people even manage to exit the motorway when they are so incapable of going in lane 1. Generally there is no valid reason to do it apart from making a point, which (especially if you are traveling with passengers) is no reason to risk 1 or 2 occurring.
2. Less of a worry, especially with these guys who mostly appear to be driving in some kind of a trance. At most they will sit there with zero irony mumbling about poor drivers standards and how left side overtaking should be punished more severely.
3. Yea, but a clear overtaking lane isn’t always available and even when it is, just efficiently clearing the hazard in a straight line is often the simpler option.
snuffy said:
For the 180/360 degree agreement of ending up back where you started from:
Surely it's 360 degrees if your car moves round in a circle, but its 180 degrees if your car pivots around its central point?
If you do a u turn around a roundabout, you have not gone round a full circle. Surely it's 360 degrees if your car moves round in a circle, but its 180 degrees if your car pivots around its central point?
911hope said:
snuffy said:
For the 180/360 degree agreement of ending up back where you started from:
Surely it's 360 degrees if your car moves round in a circle, but its 180 degrees if your car pivots around its central point?
If you do a u turn around a roundabout, you have not gone round a full circle. Surely it's 360 degrees if your car moves round in a circle, but its 180 degrees if your car pivots around its central point?
Pica-Pica said:
911hope said:
snuffy said:
For the 180/360 degree agreement of ending up back where you started from:
Surely it's 360 degrees if your car moves round in a circle, but its 180 degrees if your car pivots around its central point?
If you do a u turn around a roundabout, you have not gone round a full circle. Surely it's 360 degrees if your car moves round in a circle, but its 180 degrees if your car pivots around its central point?
911hope said:
Pica-Pica said:
911hope said:
snuffy said:
For the 180/360 degree agreement of ending up back where you started from:
Surely it's 360 degrees if your car moves round in a circle, but its 180 degrees if your car pivots around its central point?
If you do a u turn around a roundabout, you have not gone round a full circle. Surely it's 360 degrees if your car moves round in a circle, but its 180 degrees if your car pivots around its central point?
Gassing Station | Advanced Driving | Top of Page | What's New | My Stuff