Ian Jackson has brought this to us :
What you're saying is that late, 'co-operative' mergers force the
'unco-operative' would-be queue-jumpers to 'co-operate'. Well, this is true -
but it often leads to a log-jam at the pinch-point, and that creates
tail-backs that probably would not have happened if everyone had merged
early, and (if possible) maintained speed.

In my experience, yes..

NY formulated the question :
- Drivers in small towns are unbelievably benevolent to pedestrians: on
several occasions I was walking along a pavement (sorry, sidewalk) and turned
my head to look at a building on the other side of the road as I carried on
walking along the road - immediately cars would stop (not at a pedestrian
crossing) thinking I wanted to cross

I find that often happens here, in the town where I live too.

In article , Ian Jackson
writes
In message , Harry Bloomfield
writes
Steve Walker brought next idea :
whereas merging at the pinch-point often means cutting into a small
gap, causing those behind to brake and the ripple effect to bring
the whole road to a halt or slowing to a stop yourself and holding
up the traffic behind.

Not if the merge is orderly and with cooperation from both lanes,
which is what you get as a result of no one being able to bypass the
queue.

Early merges, leave one lane less than fully occupied and space for
the impatient to bypass the queue.

What you're saying is that late, 'co-operative' mergers force the
'unco-operative' would-be queue-jumpers to 'co-operate'. Well, this is
true - but it often leads to a log-jam at the pinch-point, and that
creates tail-backs that probably would not have happened if everyone
had merged early, and (if possible) maintained speed.
Whichever way you do it 3 into 2 doesn't go.
--
bert

On 05/08/2019 20:55, bert wrote:
In article , Ian Jackson
writes
In message , Harry Bloomfield
writes
Steve Walker brought next idea :
whereas merging at the pinch-point often means cutting into a small
gap,Â* causing those behind to brake and the ripple effect to bring
the whole roadÂ* to a halt or slowing to a stop yourself and holding
up the traffic behind.

Not if the merge is orderly and with cooperation from both lanes,
which is what you get as a result of no one being able to bypass the
queue.

Early merges, leave one lane less than fully occupied and space for
the impatient to bypass the queue.

What you're saying is that late, 'co-operative' mergers force the
'unco-operative' would-be queue-jumpers to 'co-operate'. Well, this is
true - but it often leads to a log-jam at the pinch-point, and that
creates tail-backs that probably would not have happened if everyone
had merged early, and (if possible) maintained speed.
Whichever way you do it 3 into 2 doesn't go.


Assuming every car is keeping the recommended stopping distance for the
speed, on a single carriageway:

MPH Cars per Hour
10 1503
20 1912
30 1753
40 1559
50 1385
60 1239
70 1117
80 1015




--
djc

(–€Ì¿Ä¹Ì¯–€Ì¿ Ì¿)
No low-hanging fruit, just a lot of small berries up a tall tree.