CCTV footage caught the moment a quick-thinking school bus driver stopped a student from stepping into the path of a car.
The shocking footage shows driver Samantha Call grab a kid by the back of his jacket just moments before a car goes whooshing past.
Call acts like it's no big thing but does lean on her horn to let the other motorist know what she thinks of their driving.
The clip was shared by Norwich City School District, in the US, and has quickly gone viral with social media users heaping praise on Call for saving the boy - named as 13-year-old Matthew Squires.
Speaking to WBNG, Call said: "I look down at my bottom mirror which I check before I let any kid out. Here comes a silver car on the side. Matt is probably the third step down now and all I could think of was 'Matt is going to get hurt', so I just pull him."
Recalling how she felt when she saw the video back for the first time, she added: "When I first saw it. All I could think of was, 'what if I didn't get him?'. I wouldn't be sending him home to his mom anymore.
"I'm so glad I could have sent him home to his mom cause I don't know if I could have gotten back on that bus had I not been able to. I don't think I could ever touch a school bus again."
While Squires' mum Christina Beardsley said she broke down in tears when she first saw the footage and how close her son had come to being hit by the car.
The driver has been hailed as a hero. Credit: Norwich City School District
She told the news outlet: "I cried. I honestly cried. If she hadn't had been so vigilant and looking behind her bus because no one really thinks of someone coming on the door side of the bus.
"I still try to wrap my head around what that person thought was so much more important that he almost hit my son."
Now the video has gone viral, Call hopes it will encourage motorists to be more considerate.
"It's got to get out there. It's got to stop. People have to pay attention this. Kids die every day from problems like this," she said.
Featured Image Credit: Norwich City School District