NASHUA, N.H. (WHDH) -- A driver was rescued after she crashed her car into a tractor-trailer in Nashua, New Hampshire Thursday afternoon.

The woman behind the wheel of the silver Honda was pulled to safety by Jay Martin and his wife.

“He said, ‘there's someone in the car and they need help,’ clearly needed help,” said Jay Martin’s wife.

“I was amazed how calm the girl was. I reached in to make sure she knew that I was there to assist her and she was okay. She had some blood on her face,” said Jay Martin.

The 26-year-old walked away with just scrapes and bruises.

“I thought he would see something that he would never forget and he just kept going and did it anyways,” Martin’s wife said.

The crash happened just before 1 p.m. on the busy Everett Turnpike. State police say the driver swerved to avoid hitting a large sign that had fallen in the middle of the road.

Her car hit the side of an 18-wheeler; she was pinned underneath and dragged for several hundred feet.

“[The driver of the tractor trailer] described feeling the impact and then checking his mirrors and then seeing the car wedged beneath the body of the trailer,” said Trooper J.D. Quigley, New Hampshire State Police.

State police and witnesses were stunned no one was seriously hurt.

“I’m amazed that woman lived,” Martin’s wife said.

Officials told 7News the sign that had fallen was from the top of a student-driver vehicle.