The phrase "congestion issues" refers to problems or difficulties caused by too many things or people being in the same place at the same time. Full definition
The pressure is already on to fix the current congestion issues and a national truck driver shortage. (nreionline.com)
Managed projects addressing signage and traffic congestion issues for four toll roads following detailed traffic impact study. (monster.com)
I typically make pudding with grassfed, fresh from the farm milk, but if there is even a hint of congestion issues in the household due to weather changes or whatnot, it is best to skip the dairy and make coconut milk pudding instead. (thehealthyhomeeconomist.com)