A roll stop plate is rotatably connected to {HEAD ~ a free edge} of {TAIL ~ the outermost plate} such that the roll stop plate is manually folded for stowing, manually unfolded for use and manually raised to a vertical position for preventing a wheelchair from rolling off the platform structure before the platform structure reaches a ground level position 
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A roll stop plate is rotatably connected to { HEAD ~ a free edge } of { TAIL ~ the outermost plate } such that the roll stop plate is manually folded for stowing , manually unfolded for use and manually raised to a vertical position for preventing a wheelchair from rolling off the platform structure before the platform structure reaches a ground level position
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH