Abstract: An improved barrier light assembly is provided of the type wherein the lens subassembly is pivotable relative to the case subassembly. The assembly employs a limited field light source (preferably an LED with a field of about 34.degree.), and incorporates a self-orienting, lens coupled holding and positioning subassembly for such a light source whereby this light source remains fixed at the lens subassembly focal point with its emission center line extending along the lens center line regardless of the pivoted position of the lens subassembly.

Abstract: A pavement marker structure and method for making same is provided wherein a pre-molded base block is clad with an in situ molded cap structure. Use of epoxy resins is avoided, and the pavement marker structure is durable and resists attack by moisture.

Abstract: A pavement marker structure and method for making same is provided wherein a pre-molded base block is clad with an in situ molded cap structure. One or two retro-reflective flattened reflectors are preferably mounted as insets between the base block and the cap structure. Use of epoxy resins is avoided, the pavement marker structure is durable and resists attack by moisture.

Abstract: Pavement markers are provided that are equipped with installation tabs which permit marker storage vertically and which permit hand holding of the individual markers during installation. After a marker is installed, each tab is breakable adjacent to the marker upper surface in response to an applied small bending force. The tabs overcome the problem of installing pavement markers upon hot tar.

Abstract: An improved power source includes a container means which is adapted to accept a plurality of polygonal dry cell batteries, with connector means able to contact their terminals regardless of their angular disposition.

Abstract: An improved barrier light assembly is provided wherein a lens assembly composed of a pair of mating halves is secured to the upper portion of a base assembly by a threaded flanged collet. A peripheral outwardly extending integral neck of the lens assembly extends into the upper portion, and the collet threadably engages the neck. A pair of screw flights are employed which permits use of identical mating halves.

Abstract: A display device suitable for use in a bicycle reflector or the like incorporating a backing plate with integral mounting means and a bracket means slidably engageable into a locking engagement therewith. The device avoids the use of auxiliary tools in assembling bracket with backing plate and the device requires no auxiliary holding means such as a screw, rivet, adhesive or the like. A durable, reliable, locking engagement is achieved between backing plate and mounting means.