This is the HO Scale Flexible Self Adhesive Paved Highway (3-1/8 x 78-3/4'') by Busch Gmbh.
Layout-Ready Asphalt Highways for Your Layout Add streets to your layout quickly and easily with this flexible roadway. Each strip features an appropriately colored thin foam highway surface with preprinted markings. A self-adhesive backing makes applying it to smooth, clean surfaces a snap, and the flexible material is easily stretched into gentle curves for extra realism. The material is easily cut to fit your available space using a sharp hobby knife.