[ibrault]

Another thing I'd be interested in seeing modeled are the people who squeeze into an exit lane at the very last minute. I've only ever commuted in the LA area but it's one of the biggest contributors to traffic by the freeway interchanges.

[yellowapple]

Yep. Happens all the time going northbound on 280 at the 101/280 interchange in SF. You'll always see at least one person clogging up one of the two 280 north lanes by trying to squeeze into the (almost always near-stationary) 101 north lanes. Then, further up 280, the same thing happens with the 6th Street exit, without fail.

[brandonscott]

There are studies that show merging late actually reduces congestion:

https://www.nytimes.com/2016/10/13/us/why-last-second-lane-m...

[bluGill]

An Exit lane is probably a different situation from the one described though, and so different behavior is better.

[ibrault]

Yes, I figured I probably wasn't clear enough. I agree with the points in the article but I'm referring to a different situation. For example, the one that kills me every morning is where the 101 S turns into the 134, there are 2 dedicated lanes for the 134 on-ramp (so no zipper merge) but people wait until the last possible minute to force their way into the dedicated lanes and clog both those and the surrounding ones. Similar situation where the 170 S hits the 134.