This whole stretch in Rocky Hill has 3-4 speed traps in it. Police frequently hide in a paved U-turn (this is easy to spot, and you can slow down when you see the turn and he won’t get you because of the knolls on either side). Police frequently hide at exits 23 and 22 also.

And, going southbound, look out for a ramp/driveway that merges into the right lane. It is not signed and between exits 24 and 23. Police could make a killing off of that one, but I do not know how often they use it, if at all.