Stop Underrides Act of 2017 This bill amends federal transportation law to require the Department of Transportation (DOT) to issue a final rule to require the installation of rear underride guards that meet a specified performance standard on all trailers, semi-trailers, and single unit trucks with a gross vehicle weight rating of more than 10,000 pounds that are manufactured on or after the effective date of the rule. DOT shall issue a final rule requiring the installation of side underride guards that meet a specified performance standard on all trailers, semi-trailers, and single unit trucks with a gross vehicle rating of more than 10,000 pounds manufactured on or after the effective date of the rule. DOT shall issue a final rule requiring all commercial motor vehicles with a gross vehicle weight rating of more than 10,000 pounds manufactured on or after the effective date of the rule to be equipped with front underride guards. It shall complete research on equipping commercial motor vehicles with a gross weight rating of more than 10,000 pounds with a front underride guard to prevent trucks from overriding the passenger vehicle and submit to the congressional transportation committees a report on such research. The bill sets forth provisions regarding retrofit and maintenance requirements, and requires post-accident inspections and pre-trip inspections by drivers.