Stop Underrides Act This bill requires the Department of Transportation (DOT) to issue a final rule to require the installation of rear, side, and front underride guards that meet performance standards on (1) any trailer or semi-trailer with a gross vehicle weight rating of 10,000 pounds or more that is manufactured on or after the effective date of the rule; and (2) any single unit truck the bottom of the carriage of which is greater than 22 inches above the ground, with a gross vehicle weight rating of 10,000 pounds or more, and that is manufactured on or after the effective date of the rule. DOT shall require drivers to (1) conduct a pre-trip inspection of the underride protection system on their vehicles; (2) identify any rusted metal, cracked welds, or missing or loose fasteners; and (3) complete any necessary repairs. DOT shall establish a Committee on Underride Protection to oversee the ongoing underride rulemaking process and update and publish online data on victims of truck underride crashes.