Another day, another nightmare commute for city straphangers.
Throngs of Big Apple riders faced hellish conditions right out of the gate Tuesday, when a signal malfunctioned at the 34th Street-Herald Square station, causing massive delays and the rerouting of several lines.
The 6:30 a.m. “signal problem” led Manhattan-bound train service on the B, D, F, M, A, C and E lines to be delayed.
Those delays in turn prompted the MTA to make service changes on multiple lines that lasted well through the morning rush.
“It’s impossible to get anywhere anytime,’’ lamented rider Mia Vallet, 26.
Lyalya Nazarova, a 28-year-old Brooklyn waitress, fumed, “You never know how much time you need in advance to get somewhere — 40 minutes or two hours — and it’s so often.
“I’m from Moscow, and [they] never have any issues: always on time, rare when the train is late. Not everyday like New York.
“The MTA is taking our money . . . It’s not fair!”
Even MTA workers sympathized with riders in the aftermath of the morning from hell.
“Subways are congested, and MTA is pocketing money and ignoring the issue,’’ a frustrated agency employee told The Post. “New Yorkers are screwed.”
The chaos included at least one F train being stalled in between stations for about 25 minutes.
By 8:05 a.m., B train service was suspended between Brighton Beach Avenue in Brooklyn and Bedford Park Boulevard in The Bronx in both directions.
Manhattan-bound D trains ran on the C line from West 4th-Washington Square to 59th Street-Columbus Circle, and F trains ran on the E line from West 4th to Columbus Circle.
M service was suspended between Broadway-Lafayette and Forest Hills-71st Avenue in both directions. All northbound C trains ran express from Canal Street to 59th Street.
It took the MTA nearly five hours before the issue was resolved at 34th Street.
Some angry riders took aim at Gov. Cuomo, who appoints the head of the MTA and the most board members.
“Another morning late to work because of atrocious signal problems on the F train. Yet, you slash the MTA budget. Fix.The.Subway,’’ Jake Mendelson tweeted at Cuomo.
The Riders Alliance advocacy group also slammed Cuomo.
“A month after Governor Cuomo said he would take responsibility for fixing the subway, he hasn’t delivered a plan for how to improve service,” the group said in a statement.
“Subway riders aren’t going to accept this sort of regular failure. We are fighting back, and we will hold the governor accountable for performance on #CuomosMTA.”
Cuomo’s administration responded by saying he has repeatedly pushed for increased funding to update the MTA’s signal system — which dates back to the 1930s.
“For decades, the MTA has been chronically underfunded . . . which is why the governor is advancing a historic $32 billion investment in the MTA and proposing reforms that would give the state majority control,” spokesman Rich Azzopardi said. “If these legislators want to help, they can pass the governor’s bill.”
MTA spokesman Kevin Ortiz apologized for the mess and said the agency is working to do better.
“This morning the 1930’s era signal interlocking at 34th Street failed and, as a result, emergency repairs were required,” Ortiz said in a statement.
“The signals and interlocking at this location are currently being upgraded as part of the MTA’s capital program, and we are focused on accelerating this work.”
The MTA tweeted, “You trust us to get you to where you need to be, and this morning, we failed to deliver. We sincerely apologize for this inconvenience.”
But commuters were having none of it. Alyssa Gold, 35, of the Lower East Side, called the entire transit agency “a sh-t show.”
“The trains are from the 1970s. We live in 2017, and I’m living in New York City — the greatest city in the world?” she said.
Paulene Livingston, a 29-year-old artist from the Lower East Side, said, “The MTA is ruining my personal life and my professional life.”