The Back Bay intersection where a bicyclist was hit and killed this morning was identified in a city report two years ago as the most dangerous in the city for bicyclists.
A 2013 report on bicycle safety commissionered by then Mayor Menino found the intersection of Beacon Street and Massachusetts Avenue had more bicycle crashes than any other - and noted it was just two blocks away from the second riskiest intersection for bicyclists:
We found that nearly 60% of all bicycle collisions occurred at street intersections. Of the 7 locations with 5 or more geographically identical collision locations, the top two intersections with the highest number of crashes were in the Back Bay/Beacon Hill neighborhood, with 14 collisions at Beacon St and Massachusetts Ave and 12 collisions at Massachusetts Avenue and Commonwealth Ave (Westbound).
H/t Penny Cherubino.