With roughly one-third of its bus drivers stuck in the snow, Metro Transit pulled its buses off the streets of the Twin Citites Saturday afternoon.

However, the Hiawatha light-rail line and the Northstar commuter train continued to operate.

About 70 of the system's 220 buses got mired in the snow and system managers made the decision to send them back to the gararges, said spokesman Bob Gibbons.

He said managers have "no idea" when regular service can be restored.