Suburban stations are typically spaced more than a kilometre or two apart. Service is typically city-centre to outlying suburbs. Electric powered multiple-unit trains are nearly universal. Service is typically intra-urban, with stations spaced from a few city blocks to around a kilometre or two apart. BART in San Francisco comes the closest to being CR rather than HR, because of its station spacing and regional service area.
Configuration is usually small vehicles operating frequently, with stations spaced close together.
The Downtown People Mover in Detroit uses the same technology as SkyTrain in Vancouver and the Scarborough RT in Toronto. The above list is derived from The New Electric Railway Journal whose editor does not list intra-complex people movers as public transit. Often cable-hauled, with unpowered cars moved by a stationary engine. More of an outdoors elevator than anything else. Others see LR as too broad, and divide it into two categories, one with a rapid transit connotation and the other more a street railway.