Is there any equipment that will tell you where the next green lane is in an area?

Thank you for you reply and help. with memory map, can you put in a route and it guide through all the green lanes in that area, is that how it works?

Hi all Im looking for some information as i haven't a clue. My OH would like a sat nav or GPS System for use whilst green laning, like the ones that the Land Rover club use. Please could you give me any advise that would enable me to be able to purchasing such a system. Your help will be much...