with this invention is illustrated in fig2 through 4 plp slider bar 26 includes main tube 32 extending along longitudinal axis 37 and is a hollow cylinder with an external surface 33 and a hollow interior 35 tube 32 has two sections including a closed gas cylinder section 34 extending from a first end of the tube and a webbing sliding section 36 extending to an opposite second end one or more attachment clips 38 are provided for attachment of main tube 32 to a structural component of the motor vehicle as shown attachment clip 38 includes a bolt type fastener 40 collar 42 at the opposite second end of main tube 32 also provides a means for mounting plp slider bar to the motor vehicle using another bolt type fastener 44 sliding collar 46 is moveable along exterior surface 33 of main tube webbing sliding section 36 in a manner which will be described in more detail as follows the lower anchorage end 30 of lap belt section 24 is affixed to slider 49 which forms a sliding webbing anchor 48 in normal use of plp slider bar 26 when it is in the normal condition shown in fig1 slider 49 is freely able to slide between positions adjacent to sliding collar 46 and fixed collar 42 as described previously this is desirable for facilitating ingress and egress for occupants of rear passenger compartment 28 internal components of plp slider bar 26 are illustrated in fig4.