Second Karaj metro line opened for limited service
https://www.railwaygazette.com/metros/second-karaj-metro-line-opened-for-limited-service/63653.article
The quote "Services are only operating on Sundays and Tuesdays from 11.00 to 13.00, running every 30 min" on the article shows extremely limited service. It's impossible for most of the people to use such a train line, when commuting.
So, diagram on the subway line should be revised to make it convenient for commuters.
