Thomas Rogers
Well-Known Member
Rampo said:
Rampo, it would seem that way, and if you were following Caymen's water pressure analogy it would be that way. But auto traffic is not as fluid as water.
ONE line of cars TWO miles long moving at stop and go speeds moves SLOWER than TWO lines of cars ONE mile long. It's the same amount of cars, but the increased number of cars in the one mile stretch causes longer delays due to the reactive/delay nature of stop and go across more cars in the line.
Once the line delay surpasses the rate at which cars can put put through the pinch point (even in a zippered fashion) then the line delay is the bottleneck, and that is a function of the line length. Shorten the length and you decrease the delay.
TJR
If everyone used both lanes, then both lanes would equally fill up so it would take the same amount of time to get through the pinch point as it would if everyone lined up two miles early. So why do traffic engineers encourage you to use both lanes until the merge?
Rampo, it would seem that way, and if you were following Caymen's water pressure analogy it would be that way. But auto traffic is not as fluid as water.
ONE line of cars TWO miles long moving at stop and go speeds moves SLOWER than TWO lines of cars ONE mile long. It's the same amount of cars, but the increased number of cars in the one mile stretch causes longer delays due to the reactive/delay nature of stop and go across more cars in the line.
Once the line delay surpasses the rate at which cars can put put through the pinch point (even in a zippered fashion) then the line delay is the bottleneck, and that is a function of the line length. Shorten the length and you decrease the delay.
TJR