State Route 10 near Eli Whitney Museum across from the Waterfall.
This report is for spring and summer.
Hamden cops run the traps from the driveways of the barn on one side and the Museum on the other. I have caught them at it during both the morning and evening rush.
Beware, New haven also runs laser traps 1 tenth of a mile south of this location (toward New Haven) on Whitney trying to catch traffic coming from Hamden.