Below is a graphic taken from the official website of the Illinois Department of Transportation showing the daily traffic counts on each leg of the Randall/Algonquin Intersection.
Just in case this is difficult to read, here are the figures:
From 2005 through 2013, traffic on three of the four legs declined. Only traffic west of Randall on Algonquin increased. Net, traffic was down 1,800 vehicles per day.
From 2009 through 2013, traffic increased on two legs and decreased on the other two, for a net loss of 600 vehicles per day.