The former line spurred the development of streetcar suburbs in Upper Darby, Haverford Township, and communities in Chester County.

[citation needed] In 1936, the P&W went bankrupt and was reorganized as the Philadelphia Suburban Transit Company taking the line with it.

In 2002, service was extended to serve West Chester University, eliminating a 10- to 15-minute walk not just for college students, but also for residents of the borough's south end neighborhoods.

As part of the plan, Route 104 trips deviating off West Chester Pike would be eliminated.

Short-turn trips to Newtown Square provide 10-minute headways to that town during weekday peak hours, and 30-minute service levels on Saturdays and Sundays.