Frontier rumble strips are purposely made in only White so as to stand out on the road. Made from special grade polymers these rumble strips are able to take heavy traffic movement. Using our innovative Hexacore design, these rumble strips are excellent warnings. Easy to install on road with bolts and glue. As a rumble strip manufacturer we have kept in mind the guidelines set by the Ministry of Surface Transport and Highways for 15 mm height and reflectivity.