On the sloped portions of West Baltimore Pk. the speed limits are ridiculously slow. Going downhill westbound towards Ridley Creek Rd. the speed limit is only 25 (it would be better at 30 or 35). Then at the bottom of the hill near Elwyn and the waterworks you are expected to increase your speed 20mph. faster to 45. Gradual speed increase would be more practical.
Eastbound from Granite Run Buick and passing Elwyn Institute, if you go 35mph like I do (which is the speed limit) other vehicles pass you and the the left lane ends going down the slope. Perhaps 40 or 45 mph. would be more practical here.