I don’t think 40 itself is that bad unless there are accidents on 70. But any alternate routes can have that. Certainly the area by St John’s and 70 sucks during rush hour and I’ve personally seen it as a parking lot by Turf Valley a few times when 70 was actually shut down. But the worst area is just the choke points where 40, 70, and 29 all converge. Which IMO isn’t any different than various areas on 29, 32, 175 and 108.

And try going down 108 in the Long Reach area during rush hour or Snowden around Kendall Ridge/Columbia Gateway area. Those are areas I don’t even go near during rush hour.