In Boston city traffic, bikes move faster than cars. The city speed limit is 25 mph, and most narrow roads with sharrows the typical traffic speed is much lowe

In Boston city traffic, bikes move faster than cars. The city speed limit is 25 mph, and most narrow roads with sharrows the typical traffic speed is much lower. Source: Bikes daily in Boston, Cambridge and Somerville on a bike share bike. Passes cars the entire way.