In August 2020, service along the route was replaced by buses to allow for the construction of improvements to the L Taraval line.

In March 2014, Muni released details of the proposed implementation of their Transit Effectiveness Project (later rebranded MuniForward), which included a variety of stop changes for the L Taraval line.

[6][7] The current platforms were to be extended to the full length of a train, necessitating left-turn prohibitions at 36th and 37th Avenues.

Trains reversed direction using the crossover west of 35th Avenue, with the westbound platform at Sunset serving as the terminal.

[10][2] Rail service was re-replaced with buses on August 25 due to issues with malfunctioning overhead wire splices and the need to quarantine control center staff after a COVID-19 case.