I've made it in reply to Dominik's post.
I wanted someone to code it so these waypoints would be reserved to monorail and maglev, while Prof Frink's waypoints would stay with railway.
I've been told on the IRC it would be better to leave decision to the player.
So you should just download it and add entry to your config file.
When clicking on the waypoint placement button, you will be greeted with pop-up with installed waypoints.
It would be nice if this grf would be added to the trunk, so people can play with these waypoints on-line.
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Thanks to HackyKid who coded it and taught me how to make (working) .nfo files
