Gold Line trains returned to normal operations and schedule at 3 p.m. today after maintenance crews repaired a loss of traction power that de-energized tracks between Southwest Museum and Del Mar stations and delayed service on the entire Gold Line since Saturday night.

Update 4 p.m.: Two additional trains were added to restore service to every 15 minutes today. Normal weekday service will resume on schedule for Monday.

What was happening: Gold Line trains were running every 30 minutes from Altadena to East Los Angeles. Passengers were advised to allow extra travel time. The loss of traction power de-energized tracks between Southwest Museum and Del Mar stations at 9:30 p.m. Saturday night, requiring trains to single track at reduced speed in the Mount Washington area.