Anyone knows what this is on the back of my camper

[Onderweg]

Hi you all,

In May we bought ourselves a nice Camper !! Its a Fiat Ducati built 1991/2. Did quite some campering with it: went to Scandinavia, Paris and in september to France and northern Spain.
Had a great time. :thumb:

Everywhere we went we have asked people whether they knew what the thing is which is included at the bottom of the bike-rack, sofar no-one could tell us what it is

First here a photo of the back of the camper:

And here a photo of the bottom part of the bike-rack of which we really cant imagine the function.

Can anyone help us out ??

 

[jools]

My Hymer has two sets of rear lights, the lower set are fitted to a sliding aluminium "bumper that can be extended backwards when carrying bikes on the rack. I think there must be legislation somewhere that insists on the rear lights being further rearwards than any part of the vehicle.