Page "People mover" Paragraph 5

Generally speaking, larger APMs are referred to by other names.

The most generic is " automated guideway transit ", which encompasses any automated system regardless of size.

Some complex APMs deploy fleets of small vehicles over a track network with off-line stations, and supply near non-stop service to passengers.

These taxi-like systems are more usually referred to as personal rapid transit ( PRT ).

Larger systems, with vehicles with 20 to 40 passengers, are sometimes referred to as " group rapid transit " ( GRT ), although this term is not particularly common.

Other complex APMs have similar characteristics to mass transit systems, and there is no clear cut distinction between a complex APM of this type and an automated mass transit system.