To add articulated trolleybuses to the fleet, King County Metro purchased 45 MAN SG-T310 articulated trolleybuses in 1985. These buses are similar to the diesel versions purchased around the same time.

Thumbnail	Bus #	Date	Description
	4018	July 2, 2002	King County #4018 sitting at Atlantic Base waiting for its next run.
	4042	July 2, 2002	KC Metro #4042 running on a route 43 in Downtown Seattle.