The system was opened on 28 April 1961.[2] At its height, it consisted of eight lines. The only remaining line was closed on 31 December 2005 (i.e., with effect from 1 January 2006).[3][1]
Services
The line operating immediately before closure of the system was:[1]
6. Торговый центр (Shopping Centre) - Микрорайоны (Neighbourhoods)
Fleet
The Sumqayit trolleybus fleet in the period leading up to the system's closure was made up of 13 vehicles of type ZiU-9.
Previously, the system had used trolleybus vehicles of the following types:[1]
^ abcd"17. Сумгаит (троллейбус)" [17. Sumqayit (trolleybus)]. Горэлектротранс (Electrotrans) website (in Russian). Дмитрий Зиновьев (Dmitry Zinoviev). Archived from the original on 4 January 2013. Retrieved 23 September 2012.
^Murray, Alan (2000). World Trolleybus Encyclopaedia. Yateley, Hampshire, UK: Trolleybooks. p. 74. ISBN0-904235-18-1.
^"Trolleynews [regular news section]". Trolleybus Magazine. Vol. 42, no. 270. UK: National Trolleybus Association. November–December 2006. p. 133. ISSN0266-7452.