The MTA announced Monday new "rapid response teams" to address problems at the three subway lines with the most delays in the last year.
At a board meeting Monday, the transit agency said the teams would be dispatched to the No. 6, No. 7 and F lines to address crowding, delays and other issues.
Officials also said "ultrasonic" detection devices would be used to avoid broken rails on those lines.
The announcement comes amid record ridership on all subway lines. At the meeting Monday, the MTA said that just five of the mass transit system's 20 lines can handle additional trains or riders during peak hours.
