For example, Google Maps will have him ride one bike trail the whole way to his destination, but he can save a lot of time by getting off the trail and onto a particular road that I've determined is safe. My brother needs a way to punch in a location on his phone, and then follow a route that I've manually laid out for him. I've been unsuccessful in finding an app that can do this sort of thing. Also using a paper map hasn't worked so far, since my brother struggles to know where he is on the map at any given time.