Two pedestrians injured in SF collisions

Two women were seriously injured when vehicles struck them in separate collisions in San Francisco on Tuesday afternoon, according to police.

The first collision was reported at 3:13 p.m. in the area of Persia Avenue and Moscow Street in the Excelsior.

A truck was traveling west on Persia Avenue when the driver heard a sound, stopped and got out of his vehicle and found a 61-year-old woman underneath it, police said.

He backed the truck off of her and she was taken to a hospital to be treated for injuries that are considered life-threatening, according to police.

Then at 4:14 p.m., another pedestrian collision was reported, this time at Fifth Avenue and Kirkham Street in the Inner Sunset.

A vehicle traveling west on Kirkham hit a 56-year-old woman who was walking north on Fifth Avenue. She was taken to a hospital, also with life-threatening injuries, police said.

The drivers were not arrested in either case Tuesday.