On the Northeast corner of Jefferson Square, there's a crosswalk and a white stop-bar on the street, but no stop sign.
This is a weird intersection where Washington ave splits into two. There is a traffic light about 40 feet further north at 3rd and Washington, but no stop sign at this corner further south.
The situation is especially dangerous because the large building between Washington and Ellsworth blocks all visibility as cars, cyclists, and pedestrians approach from the East. Further, this intersection is right next to a park and not far from a school.
Without a stop sign, cars speed through this intersection, especially on a green light.