Rt. 119 @ Sunset Rd.
Cruisers park parallel to Rt. 119 in the entrance to Sunset Rd, hidden from oncoming traffic and at the bottom of a small hill where drivers pick up a bit of speed naturally. Limit is 35 but traffic often flows at 40+, especially during commuting hours.
Radar at this location is often at night using triggered K-Band. You basically cannot see the cruiser if you’re inbound towards Groton center (North/West).