The MBTA has unveiled its speed restrictions dashboard so you can see where somebody on a bicycle can pedal faster than a subway train - like much of the Blue Line and the Green Line between Chestnut Hill Avenue in Brighton and the Lechmere viaduct.
The T promises to update the page every day so riders can follow along as the T clears, or doesn't, the slow zones that have long plagued riders and all the new ones that were added over the past couple months.