Abstract: A handle for the top of a blow-molded traffic delineator includes a bulbous lower portion, an curved intermediate portion, and an upper portion that forms a T-shaped handle. The upper portion has a hole therethrough to allow mounting of a warning light or other item. The intermediate portion has a curvature that gradually reduces the diameter of the handle moving from lower end to upper end, in a shape that easily accommodates the grasp of a human hand.

Abstract: A flat panel vertical traffic channelizer includes front and back generally rectangular panels connected to generally triangular end panels by curved corners. Each of the curved corners is formed as a portion of a cone, with a gradually increasing radius from top to bottom. The curved corners are preferably of a shape that would form a cone if the rectangular panels and triangular end panels were removed. Alternatively, the end panels may be reduced or omitted, so that the flat panels are connected by curved corners that have a radius that gradually increases from the top to the bottom of the channelizer.

Abstract: A D-shaped base fits tightly over a barrel to add ballast to the barrel. The base is perimeter weighted to increase resistance to tipping of the barrel. The interior circumference is designed to fit tightly on the barrel. The outer circumference includes a flat portion to resist rolling of the barrel if tipped over. As a result, if the barrel is tipped over, the base stays tightly fitted to the barrel, but if an automobile collides with the barrel, the base releases to reduce the possibility of damage to the automobile or barrel or base.

Abstract: A traffic delineator includes a cylinder and a base. The base has a hole therethrough to permit the cylinder to be inserted into the base and the base then holds the cylinder down. A grip is formed in the center section of the cylinder to increase ease of carrying the delineator. The cylinder may also include a handle and means for affixing traffic warning lights and flags. The base may include means for holding removable ballast. The cylinder is formed by blow molding.

Abstract: A traffic delineator includes a barrel and a base. Wheels are mounted to the delineator to permit rolling of the delineator. The barrel has a domed top for added strength. When removed from the base, the barrel may be stacked by nesting another barrel into the cavity of the first barrel. The barrel includes a handle. Traffic warning lights and flags may be affixed to the barrel. Removable ballast may be held by, contained in, or used on, the base.

Abstract: A plastic barricade is formed from identical panels placed back to back and hinged together. Each panel includes a handle at the top, vertical legs with reinforcing ribs, and horizontal cross-members. The bottom most horizontal cross-member includes a stacking lug that may be inserted into the handle to prevent a stack of barricades from tipping over. The barricade may also be designed to be compatible with existing barricades.