Abstract: A breakaway base and upper-separation joint for use with highway luminaire supports. The breakaway base, circular in cross section, has a lower-base section with a first rim, an upper-base section with a second rim, a split-ring retainer, and a perimeter band. The split-ring retainer captures the first rim of the lower-base section and the second rim of the upper-base section. The perimeter band encircles the split-ring retainer. In response to a vehicle impact with the upper-base section, the perimeter band fractures, causing disjunction of the split-ring retainer and allowing the upper-base section to separate from the lower-base section. Alternatively, the breakaway base is radial-spoked when viewed from above and has a first plurality of rims on the lower-base section, a second plurality of rims on the upper-base section, a plurality of retainer segments to engage and capture the first and second plurality of rims, and a plurality of fasteners to secure the retainer segments against the rims.

Abstract: A highway self-restoring channelizing device that is placed along the traveled way to guide motorists through temporary construction zones. The self-restoring channelizing device comprises a foam rubber body encased in a reinforced rubber outer casing that is attached to a rigid base. The base is in turn adhered or anchored to highway pavement. The self-restoring channelizing device has a shape that when viewed in elevation from the side has a wide base sloping upward to a narrow almost vertical upper portion. When viewed from the direction of traffic the self-restoring channelizing device has a tall rectangular shape. The self-restoring channelizing device will not displace and immediately restores to its original shape when impacted or run-over by a vehicle. The self-restoring channelizing device is quickly adhered to pavement and can be removed using a scraper type tool.