S4 · 05/11
2025 · ~09:45 ET ·
SEPTA · Norristown, PA, USA
| Company | SEPTA |
| Category | other |
| Type | crash |
| Date | 05/11 2025 |
| Time of day | ~09:45 ET |
| Location | Norristown, PA, USA · Norristown Transportation Center |
| Severity | S4 (serious injury, total loss, or grounding) |
| Scale | 1 train, 12 injured (2 serious) |
| Confidence | high |
| Verification | Cited source on file; not independently re-verified |
| Source | NBC10 Philadelphia (NTSB report) |
SEPTA light rail vehicle 153 struck an end-of-track bumping post at 11 mph at Norristown Transportation Center on May 11, 2025 after the operator became disengaged and did not brake; NTSB determined the probable cause was the automatic train control system's design, which relied solely on operator engagement and had no independent means to detect the situation and intervene, causing serious injuries to 2 passengers and minor injuries to 9 more passengers and the operator.