Located to the side of a track, especially a racetrack or set of railroad tracks.
This halt is notable for its very pretty trackside garden, which has won prizes in the Western Region station gardens competition.1954 November, P. W. Gentry, “The Lambourn Valley Railway”, in Railway Magazine, page 744:
Many workers were killed as they squeezed into a trackside niche or the narrow space between tracks to get out of the way of an oncoming train […]2007 May 5, William Neuman, “Looking Back at 6 Decades of Subway Worker Deaths”, in New York Times:
1 more example
Over the past two years, particularly in 2018, Network Rail has come under fire about its approaches to trackside tree-felling across its 52,000-hectare estate. Conservationists accused it of wanton destruction.2020 June 3, Andrew Mourant, “A safer railway in a greener habitat”, in RAIL, page 58:
Habitat: Growing in shaded places in forests, along pathways and tracksides or along rivers and streams; altitudinal range 1 400-3 250 m.1980, Impatiens of Africa, page 122:
For another writer, the lack of harm or moral acceptability of painting trains or tracksides flows from the nature of the location itself as 'dead space'.2016, Marta Iljadica, Copyright Beyond Law: Regulating Creativity in the Graffiti Subculture: