Altamont Corridor Express and San Joaquins services are planned to be enhanced and expanded as part of the state's general rail plan. CAHSR was originally to run over the Altamont Pass for its service route between the Central Valley and Silicon Valley, but these plans were later changed. New ACE lines are being built progressively to Ceres by 2023 and later to Merced. Additional services to Sacramento along a lesser-used rail line are also expected to be implemented in 2023, known as Valley Rail. Trains are planned to run to Merced and act as a feeder service in the northern section of the high speed rail service area.