They are saying in their FAQ that there are some brushes they can mount on the tails of trains running overhead. Can’t see any published picture of them though.
Comment garantir la propreté des panneaux ?
Il est vrai que des panneaux sales produisent moins et ce problème se vérifie également sur les toits des maisons ou dans le désert. Cependant, pour ce qui des panneaux placés entre les rails, il existe des systèmes de nettoyage, sous forme de brosse cylindrique, qui se place en queue de train et qui procède au nettoyage automatique des panneaux lorsque le train passe au-dessus. Ce dispositif garantit un rendement maximal des panneaux à un coût minime.
There shouldn’t be any rocks kicked up because the trains should stay on the rails, not touch the ballast.
But dirt, debris, and brake dust will absolutely collect very quickly. Maybe they’re counting on rain to keep them clean.
There’s still massive amounts of air pressure changes Those can definitely lift some smaller rocks
They are saying in their FAQ that there are some brushes they can mount on the tails of trains running overhead. Can’t see any published picture of them though.