Cambridge has a fleet of sidewalk plows (About 30" wide) that are also used for plowing paths and bike lanes. In the winter they are a godsend. In a snow emerg

Cambridge has a fleet of sidewalk plows (About 30" wide) that are also used for plowing paths and bike lanes. In the winter they are a godsend. In a snow emergency (i.e. when cars are forced off one side of the street for plowing), the vertical barriers can be manually removed.