The 2008 Chatsworth Train Collision
At 4:22 p.m. on 12 September 2008, westbound Metrolink train 111 collided head-on with an eastbound Union Pacific freight train on single track near Chatsworth. Twenty-five people died and more than one hundred were injured. The NTSB found that the Metrolink engineer passed a red signal while distracted by text messaging and that the absence of positive train control allowed the error to become a catastrophic collision.
Background
Passenger, freight, and intercity trains shared the Ventura Subdivision through the Santa Susana Pass, where tunnels constrained the line to one track. Signals and dispatching were intended to hold one train while another cleared the section. Metrolink prohibited personal wireless-device use, but oversight inside isolated locomotive cabs was limited.
What happened
Train 111's engineer did not appropriately respond to approach indications and the red signal at Control Point Topanga. He sent a text about twenty-two seconds before impact, ran through the switch, and continued around a curve. The opposing freight crew saw the passenger train only seconds before the locomotives met at a combined speed above eighty miles per hour.
Timeline
Train 111 departs Chatsworth
The westbound passenger train enters the approach to a red signal protecting single track.
Final text message received by network
The engineer transmits a message about twenty-two seconds before the collision.
Passenger and freight trains collide
The head-on impact derails both trains and telescopes the passenger locomotive into the lead coach.
Rail Safety Improvement Act signed
Federal law mandates positive train control on specified passenger and hazardous-material routes.
Aftermath
The Metrolink locomotive telescoped about fifty-two feet into the lead passenger coach, destroying survival space. Firefighters, police, medical teams, helicopters, hospitals, and mutual-aid agencies managed a complex rescue in the confined rail corridor. The crash killed twenty-four passengers and the Metrolink engineer and seriously strained regional trauma capacity.
Long-term consequences
Federal regulators immediately restricted on-duty railroad wireless-device use. Congress passed the Rail Safety Improvement Act of 2008, requiring positive train control on major passenger and hazardous-material routes. The NTSB also sought inward- and outward-facing cab recorders and stronger operational monitoring.
Significance
Distraction explains the engineer's missed signal, but a safe system must also anticipate a single human error. The collision demonstrates the difference between a rule that tells someone to stop and an engineered control capable of stopping the train when that rule is not followed.
What remains today
The active rail line still passes through Chatsworth and the Santa Susana tunnels, now within a national positive-train-control regime. Memorials at Metrolink stations, the NTSB docket, responder records, and the names of twenty-five people killed preserve the event away from the restricted crash site.
Uncertainty
Contemporary reports briefly gave changing death and injury totals. This file follows the NTSB final report: 25 fatalities and 102 people transported to hospitals; the Board's concurring statement later refers to 135 injured. The discrepancy reflects injury-counting scope, so the summary says more than one hundred.
References
These reviewed sources support the article. Open the claim notes to see which evidence supports specific statements.
How the sources support this article 4 claims
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Quick read
At 4:22 p.m.
- Metrolink 111 collision with Union Pacific, Chatsworth reviewed Jul 2026
- Chatsworth rail investigation docket DCA08MR009 reviewed Jul 2026
- Collision of Metrolink Train 111 With Union Pacific Train LOF65-12 reviewed Jul 2026
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Trigger and conditions
Train 111's engineer did not appropriately respond to approach indications and the red signal at Control Point Topanga.
- Metrolink 111 collision with Union Pacific, Chatsworth reviewed Jul 2026
- Chatsworth rail investigation docket DCA08MR009 reviewed Jul 2026
- Collision of Metrolink Train 111 With Union Pacific Train LOF65-12 reviewed Jul 2026
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Uncertainty
Contemporary reports briefly gave changing death and injury totals.
- Metrolink 111 collision with Union Pacific, Chatsworth reviewed Jul 2026
- Chatsworth rail investigation docket DCA08MR009 reviewed Jul 2026
- Collision of Metrolink Train 111 With Union Pacific Train LOF65-12 reviewed Jul 2026
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Why it matters
Distraction explains the engineer's missed signal, but a safe system must also anticipate a single human error.
- Metrolink 111 collision with Union Pacific, Chatsworth reviewed Jul 2026
- Chatsworth rail investigation docket DCA08MR009 reviewed Jul 2026
- Collision of Metrolink Train 111 With Union Pacific Train LOF65-12 reviewed Jul 2026
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01
Collision of Metrolink Train 111 With Union Pacific Train LOF65-12
National Transportation Safety Board
Final investigation for exact site, chronology, casualties, survival, signal evidence, probable cause, PTC, and recommendations. Open original Trace this source → -
02
Chatsworth rail investigation docket DCA08MR009
National Transportation Safety Board
Primary reports, engineering drawings, track measurements, signal evidence, records, and interviews supporting the final findings. Open original Trace this source → -
03
Metrolink 111 collision with Union Pacific, Chatsworth
Federal Railroad Administration
Federal safety summary of time, location, deaths, injuries, texting, red signal, and physical losses. Open original Trace this source →