Porter Square/North Cambridge Traffic Issues. A community meeting will be held on two traffic issues of interest to Porter Square and North Cambridge residents on February 5 at 6 p.m. at Lesley University’s University Hall Room 2-078 at 1815 Mass Ave, Second Floor. The open house style meeting will address requests to convert Davenport Street to one-way traffic operations and a proposal to address traffic congestion on Cogswell Avenue. Note that this meeting will not discuss additional bicycle safety improvements in Porter Square.