Tried w/ py's asphalt and the asphalt roads patched mods.
Can't quite get it to work. The drones will drive on the asphalt from these mods but they will NOT go between two depots unless the depots are at least connected by an unbroken string of road and/or fast road tiles from the Transport Drones mod.
I'm honestly not the biggest fan of the textures on the Transport Drones road and fast road tiles. Would prefer asphalt from py or asphalt roads.
Not sure if I'm doing something wrong?