Sen. Charles Schumer is urging federal authorities to audit railroad agencies to make sure they are testing train engineers for sleep apnea.

"We need the NTSB [National Transportation Safety Board] to do a full investigation of all our railroads, here in New York and around the country, and let us know who's doing the right thing and who's not when it comes to safety and then force the others to get with it," New York's senior senator said.

Wednesday morning, more than 100 people suffered minor injuries when a when a Long Island Rail Road train crashed into a bumper block at Brooklyn's Atlantic Terminal.

Investigators said the engineer said he does not remember the train crashing and is undergoing tests for the disorder.

They are also looking into the backgrounds of the train cars and the crew.

The operators of the trains in the 2013 Metro-North derailment in the Bronx and last September's New Jersey Transit crash in Hoboken were both suffering from undiagnosed sleep apnea.

Schumer said the testing could ultimately save lives, and that riders deserve to know whether the federally recommended tests are being done.

Schumer also said he wants inward-facing cameras.

Four people died in the 2013 crash, and one woman died in last September's New Jersey Transit crash.

Some passengers NY1 spoke to said it is about time lessons are learned from previous accidents. Some even had safety suggestions of their own.  

"It should be limited to the amount of hours they can drive," one man said at Penn Station. "When it's overtime, they drive more hours. They should be checked out to make sure they can still drive."

"Everyone should pass some type of physical examination and sleep apnea, and any type of narcolepsy or anything should be taken into account for your job," one woman said. "You have people lives in your hands."

Schumer said the NTSB has already called for safety testing but it has not been done.

"The fact that it wasn't done on the LIRR when we saw what happened in Spuyten Duyvil, when we saw what happened in New York City subways is outrageous," Schumer said. "Why didn't the whole MTA test everyone for sleep apnea?"

Schumer said the next steps are to get the NTSB to complete a review of railroad systems — not only in New York but across the country — and give each one a safety report card so that all railroads are being held to the same improved standards.