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The accident site, a few days after the crash.
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| Date | November 15, 1875 |
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| Time | circa 01:11 |
| Location | Kapellån, between Malmslätt and Bankeberg |
| Coordinates | 58°24′07″N 15°28′59″E / 58.402°N 15.483°E |
| Country | Sweden |
| Rail line | Eastern Main Line |
| Type of incident | Head-on collision |
| Statistics | |
| Trains | 2 |
| Deaths | 9 |
| Injuries | 3 |
The Lagerlunda rail accident occurred in the early hours of November 15, 1875 about 8 km west of Linköping in Östergötland, Sweden. Unclear signalling between a station master and a steam engine driver led to a train leaving the station although another train was approaching on the single line track. 9 people were killed in the head-on collision shortly after. The station master was sentenced to 6 months of prison.
A contemporary investigation by Swedish ophthalmologist Frithiof Holmgren suggested that color blindness on the part of the driver could have contributed to the accident, which prompted the introduction of mandatory color-vision screening of railroad personnel. However, more recent analyses dispute color blindness as the main cause of the accident.