Abstract: A half barrel traffic barricade for use with an annular traffic barricade base includes a half tube-shaped vertical wall having a top end and a bottom end. A top panel is provided at and closing the vertical wall top end. The annular traffic barricade base is adapted to be received over the vertical wall and engages the bottom end thereof for supporting the traffic barricade in a vertical position. Preferably, the vertical wall further includes a convex front face, a concave rear face, and vertical wall edges. Stacking flanges can be provided extending along the vertical wall edges and a nesting/stacking pocket is defined between the concave rear face and the top panel. The traffic barricade is nestable/stackable with other traffic barricades by inserting the front face thereof into the nesting/stacking pocket of an adjacent traffic barricade with the stacking flanges of adjacent traffic barricades being placed against/abutting one another.