🔗 Wikipedia: Rubber-tyred tram

Some follow-up on my speculation of how this one-rail tram vehicle that I saw in Italy works. Turns out that the single rail is used for guiding the vehicle, and the one pantograph variant does use the rail for the return current. But there is a two trolly-poll variant that only uses the rail for guidance, and can disconnect from it to form a bog standard trolleybus. Bit weird to consider the rail at all at that point, but still quite intriguing.