The busiest ‘single track’ rail segment in the country,
Carrying over 1,000 trains a month,
The Tehachapi Pass connects the Central Valley with
The transcontinental mainline in the south. Many tunnels
Along the line cannot be expanded to double track, so passing sidings
Are used where ever there is room to bring trains through.
https://railpictures.net/photo/839564/
https://www.youtube.com/@TehachapiLiveTrainCam/streams