State Highway 29 near County Line Road
Although not exclusive to p.m. rush hour (I was busted on an early Sunday morning on my Harley for 5 over), heading eastbound after you cross County line Rd going into St. Clair County. The speed limit goes from 35 mph to 45 mph on a 2 lane curve down to 1 in about a 1/2 mile. Another 1/2 mile down it jumps to 50 mph. There is a sign posted that St. Clair County Sheriff patrols there but it is always New Baltimore cops who I see sitting behind Green St. Tavern or on the side of church the next block up.