PORTLAND, Ore. — Computer problems and heat impacts continued Wednesday at TriMet. The agency said all rides system wide are free today.

As temperatures approached 100 degrees in parts of the metro area Wednesday, MAX trains slowed due to the hot weather. WES commuter trains were suspended just before 1 p.m. due to the heat and shuttle buses were serving stations between Wilsonville and Beaverton transit centers.

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The heat wave made for a nightmare commute for thousands of people Tuesday evening as MAX trains slowed to a crawl for hours.

According to TriMet spokeswoman Tia York, the delay was due to a computer network failure — the second of its kind in a matter of days.

Wednesday morning, MAX, WES and buses were running normally. However, ticket machines were not accepting payment cards and riders will not be able to load their Hop cards.

On Saturday, TriMet’s computer system shut down during an equipment install. On Tuesday, crews were repairing TriMet’s reader board system when the network failed, again. York said she didn’t know when the latest network failure would be resolved.

York said two more factors contributed to Tuesday’s delays; temperatures rose above 90 degrees, requiring drivers to slow MAX trains in high speed areas so drivers could watch for problems like kinks in the rail and downed wires. The Orange Line was also disrupted when a wire came down near the tracks.

Many MAX riders were diverted to alternate routes via shuttle busses.

“It's very frustrating that they don't have a better back-up plan,” said Dani Schreiber, who boarded the Orange Line at the South Waterfront before getting off to wait for a shuttle at SE 12th and Clinton.

“They told us there was a bus so we went across the street but the bus was full so I called my daughter to pick me up,” said Schreiber. “There were no other buses in sight.”