I wonder if we should have dedicated lanes (with barrier in between) for trucks. Going to midtown there's already an express channel. Anyway, most of the traffic is caused by ramp and intersection. Take the I-495. There's always a traffic 1mile before splitting off to Grand Central and JFK, as two lanes go unsplit, one lane goes to Grand Central and JFK. Most cars go to the right (toward JFK). Then about 1000 feet away, there's another split to go to exit 22A, and just 300 feet, there's a small ramp to merge with the main road again. See [1] follow the map. [2] illustrates the congestion about 2miles before [1] where I usually merge with the I-495 traffic. The same is with the Kosciusko bridge, once you pass the merge, the traffic is usually very smooth.
Driving there is nightmare.
[1]: https://www.google.com/maps/@40.7375669,-73.8506027,3a,75y,7...
[2]: https://www.google.com/maps/@40.7316156,-73.8699642,3a,75y,3...