Two years after Boston Public Schools faced parental backlash over an algorithm to improve bus routing, school districts are looking to give the software another chance, drawn by potential to save millions.

Safety records regarding Fung Wah buses uncovered by MuckRock show that at least one of the company’s vehicles was “breaking in half.” The documents detail extensive safety violations prior to last month’s shutdown, including citations for operating buses in defiance of regulators’ orders.