You might be interested in bringing the Traffic Authority's attention to the 2012 Fitzgerald & Halliday report on traffic-calming for this area (see recommendations on p. 19 of the report). A link is attached below. Or, if this doesn't work, go to the Traffic Authority website on Hamden.com and look under "Traffic Studies and Reports/East-West Corridors." https://www.hamden.com/DocumentCenter/View/1485/East-West-Traffic-Study-PDF

To request street signage and or traffic calming please visit the Hamden Traffic Authority website and fill out the "Request to be added to the agenda" form.
Website- https://www.hamden.com/375/Traffic-Authority
Form- https://www.hamden.com/DocumentCenter/View/4268