One of the larger features of the Japanese urban landscape is the raised expressways that wind their way through the cities. Of course this is a good opportunity to get some serious level changes on the board.
The board is made up from 300mm x 300mm lasered squares and the expressway preferably had to fit this. Each 'section' is supported underneath with a concrete stanchion (made from chemiwood) and has two roadways on top, each side has one way traffic.
The intention is to have lights both underneath (in a limited capacity) and on the expressway itself. I do have some photos of the top lit up but I can't find them at the moment. The road surface is medium grit sandpaper and everything else is either lasered or made from chemiwood.