The subway train may seem a little more crowded due to cutbacks quietly made by the Metropolitan Transportation Authority.

Without alerting riders or holding public hearings, the agency reduced the number of peak and off-peak trains on the 1 and 6 lines on July 1.

There are now 21 trains per hour during the morning rush on the 6 line, down from 23.

The 1 line now has 16 trains per hour during the morning rush, down from 18.

Off-peak, the MTA is running 13 trains per hour instead of 15 on the 6 line and between nine and 11 trains per hour on the 1 line, down from 10 to 12.

An MTA official said in statements that the “seasonal adjustments” are based on lowered ridership due to summer vacations, and that most riders will only have to wait an additional 30 seconds.

MTA officials say during average peak times on summer weekdays, ridership is down 12 to 19 percent on the 1 line and between 10 to 19 percent on the 6 line.

No other subway lines are affected, but some bus lines have similar summer reductions, according to the MTA.