Talking about this convert thing. I know the new road/tram type has to be compatible with the old road/tram type, but i just don't like this functionality. Each time i want to convert an electrified road to a standard road, it tells me there isn't a suitable road. It doesn't do the same thing when i want to convert ELRL to RAIL...
OpenTTD is multiplayer innit.
To further explain: since roads can be used by vehicles of any company, downgrading roads has more potential impact. Converting ELRL to RAIL can only affect your own vehicles.
The development team thought about and discussed this issue at length, and decided the griefing potential of a mass-road-downgrade tool was too great to allow it. For any actual-gameplay uses, removing and rebuilding is perfectly adequate, and you're unlikely to change anyone's mind by posting here (especially if your argument is "I do what I want
Rather than trying to prevent all grief by other players, why wouldn't we rather have players that would respect themselves instead of doing this ? In OpenTTD, twisted players griefing others can be counted on the fingers of a hand. I did play a 1700-2050 (and further) game on RATT with friends (we're about 10 companies each game) and no one ever trolled the others on road type conversion, etc. We played a game with just converting our roads, and even if we took the same sections on some routes, we never removed our roads so that the other couldn't run his vehicles, never converted manually an electrified road to a standard road to block other's trolleybuses, etc.