Penngrove crossing. Note the diagonal crossing of a three way road intersection with buildings blocking visibility. Hopefully all the gates, bells and warning lights will do their job. The passenger DMU's slow from 79 to 45 but the motormen probably still hold their breath until they are across.
Where once there was only one commuter carrier, Southern Pacific between San Jose and San Francisco, today there are three: Caltrain (former SP), Altamont Commuter Express, and the newest, SMART (Sonoma-Marin Rapid Transit).