The astonishing video of Zhanna Sankina's collision shows the apparently doomed Zhanna, 16, running in front of the bus as she runs across the road.
The youngster, from Orenburg, said: "When the bus smashed into me I didn't know what was going on. I just woke up and saw all the doctors around me."
Accident experts believe that the crash pushed Zhanna into a deep pocket of snow which absorbed the impact like shock-absorbing foam or an airbag.
"She walked away with barely a bruise. On a sunny day she would have been dead," said one traffic cop.