High traffic volume and poor visibility contribute to this intersection being the most dangerous in Cambridge and ranked as one of the worst in Massachusetts. Located near the Massachusetts Institute of Technology campus, this intersection services a heavy volume of commuter traffic along Mass Ave, as well as the local student population on foot and bicycle. Use extra caution and follow traffic rules if you are travelling through this intersection by bike, as a high number of bicycle accidents tend to occur here due to poor visibility and cyclists ignoring traffic rules.

Inman Square at the intersections of Cambridge St, Hampshire St, and Prospect St, is a location where most of Cambridge's bicycle accidents occur, leading a 2009 study report to rank it as the top location in Massachusetts for bike crashes. Cambridge is home to many bicycle commuters and recreational riders, but areas like Inman Square and others pose specific dangers that locals and visitors should be aware of.

This intersection can be one of the most dangerous for those unfamiliar with the area to do poor signal timing and a confusing configuration. Watch out for MBTA buses making a U-turn from Aberdeen Ave, as they will cross over other lanes in order to make the wide circle necessary to avoid power lines. Driver frustration due to long wait times is known to be a factor in accidents here.

The bar chart shows most dangerous streets and their accident totals (2010-2014).

Clicking on any bar will update the lower display of all of the major intersections along that road and their accident totals. Hover over the bars and circles for more detail.