merge in turn 1543It depends upon how many cars are merging does it not? Let me stress once more that I agree that zip merging at the...
JNugent
Let's try this from a very basic level.
Night time = no vehicles (or very few) = no slow moving queue. Early morning = some vehicles = all vehicles merge whilst still travelling at (say) the speed through the restriction = no slow moving queue Morning peak = lots of vehicles = all vehicles merge whilst still travelling at (say) the speed through the restriction = no slow moving queue
merge in turn 1544You appear to understand the effects of queues, but not the cause. buttuming a constant rush-hour flow of 2-lane traffic into a 1-lane section, there...
And so it continues until someone insists on overtaking everyone else and pushing in near the cones. This cause the vehicle behined to have to reduce speed to make room which triggers the bunching. Repeat that a few times and eventually the traffic comes to a stop.
I was on the M6 southbound to M42 southbound link road some months ago. At this point on the M42 there are-were substantial roads works and the offside lane of the link-slip road was coned off. I happened to be at the font of a number of cars approaching the restriction gradually reducing speed to that of the restriction (50 IIRC). We're getting close to the start of the cones when some self-important prat decided he was going to overtake the lot of us and barge in front. Given the speeds and distances involved I estimated that he was going to cause me to brake so I persuaded him to stay where he was and we all sailed through the restriction with no fuss at all.
From your description, the only "blocked" road I can see is the "more major" one at the roundabout. If the traffic is flowing steadily through the coned off area it would cease to be blocked.
