TriMet says it has a chained fleet ready if snow and freezing rain hit the Portland area, but buses for Saturday service pulled out this morning without chains.
TriMet also operated MAX trains throughout the night to help keep overhead power line clear of ice, said spokeswoman Bekki Witt.
Witt said the chained buses are on standby. Crews were out at 3 a.m. to scout bus routes to determine if any lines needed sand or to be moved to a snow route, she said.
Meanwhile, three MAX trains ran overnight across TriMet's 52-mile system to help keep the overhead power lines from accumulating ice.
All trains are outfitted with pantograph heaters, which are activated when there is precipitation to help prevent ice buildup on the lines, Witt said. The pantograph is the arm that reaches from the top of the train to the overhead power lines; the heaters help keep the pantograph's contact point warm, helping prevent ice build up.
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