A new report sheds light on the impact signal troubles had on rush hour subway rides in 2018.

The Riders Alliance says 92 percent of morning rushes were slowed by signal problems.

The worst months were in January and February, which saw signal delays every morning.

The report says the "F" line was the worst, with 72 days of morning rush signal delays.

Six lines saw more than 50 days with signal delays.

The MTA released a statement saying in part, “...the Subway Action Plan, along with President Byford’s 'Save Safe Seconds' campaign, have improved performance for millions of riders, with on-time performance reaching four-year highs recently. "

It also touted the potential of Byford's Fast Forward Plan, saying, if funded, it will modernize the signal system for decades.