- April 20
- 1856 – Robert L. Stevens, president of Camden and Amboy Railroad, dies (b. 1787).
- 1887 – Horatio G. Brooks, founder of Brooks Locomotive Works, dies (b. 1828).
- 1966 – The second segment, between Predeal and Câmpina, of Căile Ferate Române's (in Romania) electrification is completed.
- 2005 – UTA TRAX (pictured), in Salt Lake City, Utah, begins construction of its 900 South Station, the railroad's first new station in six years; this is the first station for the railroad that is to be built in a mainly residential area.
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