A suspected road rage incident on Interstate 80 in Placer County that left two women terrified started after one woman made an obscene gesture at a driver who was tailgating their vehicle, according to a California Highway Patrol report.

A woman was arrested in the dust-up Saturday shortly after noon between drivers in Placer County that was captured on a video and posted on YouTube.

The video includes the women in a car trying to escape a female driver of a sport-utility vehicle as the vehicles speed down eastbound I-80. The driver in the car is aided by her friend in the passenger seat who is trying to seek advice and help from authorities – all the while capturing the scene on another cellphone.

“Please help us,” the passenger pleads to a police dispatcher.

The CHP report said that a caller in the car told dispatchers that a Ford Explorer was tailgating their Mazda. As the SUV pulled alongside the car, “the passenger in the Mazda made a rude hand gesture toward the Explorer,” according to the CHP report.

When the vehicles got west of the Gold Run highway rest area, the SUV pulled in front of the car and came to an abrupt stop. The SUV driver got out of her vehicle and approached the car.

The SUV driver then held up an unknown type of identification card and identified herself as a sheriff and stated the two women in the car were going to jail, according to the CHP report.

The driver in the car then sped away in an attempt to get away from the SUV. The SUV followed, pulled around in front of the car again and forced the Mazda to come to a stop by blocking its path.

Once again, the car sped away. At that point, the SUV came up alongside and struck the left side of the car of the two women, forcing it onto the shoulder of the freeway.

“She just hit our car!” the passenger tells a dispatcher as the driver screams. “She’s pushing us off the side of the road. Put it in reverse, Vanessa.”

The dispatcher eventually instructed the two women to exit at Dutch Flat where an awaiting officer at a service station came to their aid.

The CHP identified the woman in the SUV as 50-year-old Deirdre Orozco of Santa Clara. She was booked into Placer County jail on suspicion of assault with a deadly weapon/not a firearm, obstructing a peace officer and reckless driving. Officials did not identify the two women in the car.

The Roseville police reported Tuesday that Orozco was also recently arrested in a Dec. 17 incident when a woman driving a sport-utility vehicle collided with another car at Sunrise Avenue and Cirby Way at about 5:30 p.m. and left the scene.

The SUV driver, later identified as Orozco, continued to a relative’s house in Roseville, and allegedly threw large rocks through a front window while threatening the residents with bodily harm. The family called police.

Officers responded and arrested Orozco without incident on suspicion of felony hit and run, making criminal threats and felony vandalism. She was booked into the Placer County jail.

Here’s the cellphone video of the tailgating incident. WARNING: The unedited video contains profanity.