Approximately two-thirds of SEPTA's regional rail fleet are Silverliner IV railcars.
November 24, 2025
high
temporal
Indicates the proportion of SEPTA's regional rail fleet comprised by the Silverliner IV model.
A 2025 National Transportation Safety Board (NTSB) assessment concluded that the outdated design and maintenance and operating practices related to Silverliner IV railcars increase the incidence and severity of electrical fires that can spread to occupied compartments, representing an unacceptable safety risk.
November 24, 2025
high
temporal
Summarizes the safety findings and concerns raised by the NTSB regarding the Silverliner IV railcar design and related practices.
The Silverliner IV electric passenger railcars constitute about two-thirds of the Southeastern Pennsylvania Transportation Authority's (SEPTA) regional rail fleet and date back to the mid-1970s.
November 24, 2025
high
temporal
Describes fleet composition and vehicle age for SEPTA's regional rail.
The National Transportation Safety Board (NTSB) concluded that the outdated design of Silverliner IV railcars combined with criticized maintenance and operating practices creates an immediate safety risk because electrical fires can spread to occupied compartments.
November 24, 2025
high
temporal
NTSB safety assessment regarding electrical fire risk in Silverliner IV cars.
The Silverliner IV electric railcars in SEPTA's regional rail fleet date back to the mid-1970s and are the agency's oldest railcars.
January 01, 1975
high
temporal
Describes the age and fleet status of the Silverliner IV railcar model used by the Southeastern Pennsylvania Transportation Authority (SEPTA).