359 / | HD | OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS |
515 | DF | SIGNAL REFLECTOR {11} |
529 | DF | .~ 3-Corner retroreflective (i.e., cube corner, trihedral, or triple reflector type) {1} |
530 | .~.~ Unitary plate or sheet comprising plural reflecting elements {3} | |
531 | DF | .~.~.~> Mounted on roadway |
532 | DF | .~.~.~> Mounted adjacent roadway |
533 | DF | .~.~.~> Mounted on vehicle |