MBTA riders on Tuesday morning endured soggy, delay-filled commutes following an early morning Red Line train derailment that had negative ripple effects throughout the system.

It was the second derailment in four days, following an incident Saturday on the Green Line near Kenmore Station, and the problems come three weeks before the T is set to jack up its fares.

According to a T spokesman, one car of a six-car southbound train derailed just outside JFK/UMass Station at 6:10 a.m. and the car sustained "significant damage."

Boston EMS responded to the scene and none of the 60 passengers aboard the car were transported for care. One person reported a hand injury, according to spokesman Joe Pesaturo.

The cause of the derailment is under investigation, he said, and personnel are working to re-rail the car.

Boston EMS reported 11 injuries due to a Green Line derailment Saturday morning as a train was leaving Kenmore Station.

Officials have ruled out the vehicle and infrastructure as the cause of the Green Line derailment, MBTA Deputy General Manager Jeff Gonneville told the MBTA Board Monday, saying the cause "does appear to be operator-related."

Board members had no questions for Gonneville about the derailment.

Amid rider complaints about service, Democratic Party Chair Gus Bickford criticized Gov. Charlie Baker, who for years has decline to stake out a position on a wealth tax that would generate $2 billion for education and transportation.

"These derailments don't just cause delays and frustration, they put lives at risk," Bickford said in a statement. "Meanwhile, just yesterday, Charlie Baker doubled-down on his position that we don't need additional revenue to fix our broken public transportation system or our crumbling roads and bridges. If the governor thinks the system can run just fine as it is, then it's fair to ask if the problem lies with his ability to manage it."

Health Care Financing Committee Co-chair Sen. Cindy Friedman acknowledged the Red Line derailment and traffic congestion as the got her panel's hearing off to a tardy beginning.

"We started late. We'd like to acknowledge the Massachusetts Bay Transportation Authority and the Mass Pike, and thank you to all those who braved getting to the State House," she said. "We won't talk about whether we need more funding for the T, that's for another group."

According to Suffolk University-Boston Globe poll results released Tuesday morning, 61 percent say that general travel, including commuting to work and school, has gotten worse over the past five years.

Katie Lannan contributed reporting.