What can we do about what I regard as the roving billboard, parked inconsiderately in the only layby of the residents' part of London Road?

Not only is it spoiling the outlook of the elderly residents but it is also taking up two or three valuable parking spaces.

How do we get rid of this eyesore? It's not the first time it's been left there. What is its purpose? It's not even facing incoming traffic.

-BH Day, Brighton