The route is frequently covered in Chinese-language media as a result of the bus operator's publicity efforts.

[6][7][8] Trolleybus Route 20 opened on 27 September 1928, initially operating between Zhongshan Park and the Jing'an Temple.

[9] That year, it was estimated that as many as 9 out of 10 Shanghai residents had ridden on the route.

These buses bear a blue retro livery, commemorating the heritage of trams and trolleybuses in Shanghai.

Interchange discounts using the Shanghai Public Transport Card is applicable.