Santa Clara is one of my favorite places to watch trains. Here, the former Southern Pacific lines from San Francisco and Oakland meet on their way to Los Angeles. As a result, a substantial number of freight and passenger trains pass by in a given timeframe. Rush Hour is generally around 4-6 PM on weekdays. The line to San Francisco is now owned by Caltrain, while the tracks to Oakland, and Santa Clara Yard, are owned by the Union Pacific.