trips per weekday in the peak rush hour directions – westbound (to San Jose) in the morning and eastbound (to Stockton) in the evening. Trains are scheduled to make the one-way trip in 2 hours 12 minutes, an average speed of . ACE did not operate on weekends or major holidays until September 7, 2019, when two Saturday round trips were added. Route From San Jose to just north of Santa Clara, ACE uses the Caltrain main line (Peninsula Subdivision), shared with Caltrain and Amtrak service. From Santa Clara to Stockton – the majority of the route – ACE runs on Union Pacific Railroad freight lines. From Santa Clara to Newark, ACE uses the Coast Subdivision, then the Niles Subdivision to Niles. From Niles to Lathrop, the line uses the Oakland Subdivision. From Lathrop to Stockton, the line uses the Fresno Subdivision. The route runs through Niles Canyon, parallel to the Niles Canyon Railway, Highway 84, and the Hetch Hetchy Aqueduct. The line passes through a long tunnel which cuts off one of the canyon's horseshoes. This tunnel was modified from its original configuration to accommodate intermodal double-stack freight trains. However, this left the track in poor condition, reducing speeds from to in the summer and as low as during the rainy season. The San Joaquin Regional Rail Commission plans to rehabilitate the tunnel. East of Pleasanton and Livermore, the line runs through the Altamont Pass on the original Feather River Route. After crossing the California Aqueduct and the Delta-Mendota Canal into the Central Valley, skirting the southern edge of Tracy. It then turns north between Lathrop and Manteca and runs to Robert J. Cabral Station in Stockton. Tickets and fares ACE tickets are available at select stations and on ACE's web site. Distance-based fares are available in one way, round trip, 20 trip, and monthly passes. Rolling stock ACE operates push-pull trains with one to two diesel locomotives and four to eight bilevel coach cars. Trains typically operate with the locomotive(s) leading westbound and the cab car leading eastbound. ACE has ordered 17 additional Bombardier BiLevel cars (5 cab cars and 12 coaches). Deliveries were expected to begin sometime in 2021. The entire fleet of Bombardier bilevel coach cars and MPI F40PH-3C locomotives will be rebuilt, overhauled, and repainted to have a matching paint scheme, except for two F40PH locomotives that were retired in May 2020. They will then