1 2 diameter solid aluminum with 1 4 34 flat plate by 1 34 by 1 34 affixed at the bottom by welding or screw threading the shaft is welded to a bottom surface of the floor plate 35 compared to prior art bollard top formations the present invention provides an easily installed cap which can be placed down into the wet concrete without need for hand forming or welding the reflective band increases visibility for traffic safety fig3 and fig5 illustrate an alternate embodiment demonstrating further advantages of the bollard cap of the present invention in the embodiment of fig3 an alternate cap 26a includes a sleeve 50 proceeding downwardly from the dome 30 providing an enclosed volume v which can hold electronics and sensors the sleeve 50 includes hardened plastic transparent strips 52a b covering openings or windows 53a b behind which is located motion detectors or optical detectors such as a beam generator or receiver to transform the bollard into a security device a sensor control box 58 can be provided which when the bollard cap 26a is placed down into the pipe 20 registers with a conduit 60 having electrical conductors and or optical conductors 62 therein for providing power to the bollard or for transporting signals to and from the bollard such as sensor signals additionally the bollard cap can include an audio component 66 such as a small loudspeaker for providing warnings alarms verbal instructions to persons near the bollard etc a reflective band 70 can be applied below the electronics compartment as described above the dome can be made of transparent material and can be provided with a light therein for aesthetic purposes or for traffic safety the shaft 36 and anchor plate.