From the DPW Superintendent, Ryan Mouradian.   

This section of Route 12 is ultimately the MADOT's responsibility, however, I spoke with them and they stated that if this is something the Town is interested in doing, it would need a formal request that the town would support this as being NO RIGHT TURN onto Laurelwood Road coming South on Rt 12.  They emphasized that all applicable boards and departments (police, fire, etc) need to support this request.  After the request, it would fall in MADOT's hands for approval, installation and maintenance of said signage.  If this is something you would like to discuss, we can put it on a future meeting agenda.