>>1576820Better per-length-of-vehicle capacity
Greater maximum length of vehicle / consist - not limited by handling, only by signaling / station platform length
Easier to separate from other traffic - only the most braindead of drivers will try their luck on uncovered tram track
Far more compact structure gauge, just minimally exceeding the vehicle loading gauge.. trolleybuses would need a lot more to be able to pass at speed.. sure, guided way trolleybuses can technically have smaller gauge as well, but the guided way infrastructure cost is at least equal to a tram track, and therefore the one major advantage is lost
