Metra is in discussions with Cook County on a proposed pilot program to lower fares for city rail service on Metra’s Rock Island and Metra Electric District lines to $2.50 — the same cost as a ride on the CTA’s "L" — in order to add transit options to the South Side, said Metra spokesman Meg Thomas-Reile. Metra would also run trains more frequently under the plan, which would be subsidized by the county.