A pedestrian was rushed to the hospital with head trauma, after he was struck by a San Francisco Municipal Transportation light rail vehicle in Mission Bay Wednesday evening.

According to San Francisco Police Department spokesperson Officer Albie Esparza, the collision occurred at 8:19 p.m. Wednesday evening near Third and Mariposa Streets, right behind the UCSF Benioff Children's Hospital.

Esparza says that a 22-year-old man "walked onto the Muni train tracks and was struck by the Muni train," likely the T-Third, as that is the only Muni train that runs on that route.

The man was transported to the hospital with a "traumatic brain injury," Esparza says. No update on his condition was available at publication time.