The North/South O-train line could be extended from Confederation station along the VIA line to Barrhaven.

This extension would provide for stations at Colonnade (shared with a Kanata extension), as well as stations at Merivale, Fallowfield, and Jockvale Rd. The initial terminus would be Fallowfield, with one or two additional stations added to the south-west.

The line would be shared with VIA rail, and this would require two passing tracks to permit VIA trains to pass the LRT vehicles.

Diesel LRTs would initially provide service to Bayview, including stops at Carleton University.

This line could be operational 3-4 months after an Environmental Assessment, and cost:
$32M - FALLOWFIELD/jockvale (15 minute service on DLRT)
$11M - FALLOWFIELD/416-park'n'ride.