A lane delineation tape is disclosed comprising a strip of cellular polymer having a reflecting layer on top and an adhesive on the bottom surface for adhering it to a road surface. Preferably it is made of elastomeric foam having a relatively low compressive strength, e.g. 100 kPa at 25% compressio...http://www.google.co.uk/patents/US4648689?utm_source=gb-gplus-sharePatent US4648689 - Pavement marking tape
