Key System
Key System streetcars also used the IER Shattuck Avenue tracks from Parker St to University Ave until abandonment in November 1948. During World War II the Key System used a portion of the 7th St, Dutton Ave Line tracks in Oakland on 7th St, from Broadway to Pine St, for streetcar service to a shipyard and most of the 9th St track of the 9th St Line for the Richmond Shipyard Railway.