From Toilet Paper to Robots – How Road Crack Sealing Has Evolved In November 2016, Highways.Today published one of those stories that sounded too ridiculous to ignore. Road maintenance crews in Littleton, Colorado, were repairing cracks in asphalt and then covering the fresh sealant with toilet paper. There was nothing particularly sophisticated about it. The ... The post From Toilet Paper to Robots – How Road Crack Sealing Has Evolved appeared first on Highways Today .