Abstract: An impact attenuator to absorb the impact energy of vehicle collisions. The attenuator includes a fiberglass shell which forms an interior cavity. Located within this cavity are a plurality of empty aluminum beverage cans. The cans are arranged in a three dimensional array having a number of horizontally planar rows. Each of the rows includes a plurality of columns, with each column being formed of a number of cans in end-to-end relation. The columns are aligned such that their longitudinal axes are parallel to the anticipated direction of impact, such that they will be forces to buckle under impact and thereby absorb a portion of the impact energy. The rows may each be placed in a tray-like divider having a peripheral lip to maintain the row's configuration. The entire array of cans may be surrounded by burlap to maintain the array configuration and prevent scattering of the cans after impact.

Abstract: A flagger gate for roadway construction sites. The flagger gate includes a base which pivotally mounts an elongated arm. The arm may be pivoted from a lowered position where the arm extends horizontally into a lane of the roadway to a raised position where the arm extends vertically. A first sign member is located on the arm near the free end thereof, and will typically be a stop sign. A second sign is located below the arm between the free end of the arm and the base, such that the sign extends towards the roadway when the arm is raised. A linkage is provided for rotating the signs during rotation of the arm. Specifically, the first sign faces traffic when the arm is lowered, but faces upwardly when the arm is raised. The second sign faces the base when the arm is lowered, but faces traffic when the arm is raised. This eliminates confusion as to which sign to obey.