Several people escaped serious injury after police say a semitractor-trailer driver going too fast for the snowy road conditions on Interstate 15 caused a multivehicle crash in Iron County Thursday.As a snowstorm passed through Southern Utah late Thursday night, Utah Highway Patrol troopers and Iron County Sheriff’s deputies were dispatched to multiple incidents along the interstate. At around 11 p.m., trooper Daniel Nielson was dispatched to mile marker 73 on northbound I-15 on report of multiple rollovers in the area, including one involving two women and a man who were waiting outside their crashed vehicle while a tow truck was en route.“The tow truck was taking longer than I thought, so I went down to check on them and the elderly females were starting to shiver, so I brought them up and put them in my patrol car,” Nielson said, noting that his car was parked off the road in the inside median. Two wreckers showed up a short while later and parked next to Nielson’s patrol car to help recover the rolled vehicles. As Nielson and the tow truck drivers were outside discussing how to get to the vehicles, he said they noticed drivers whizzing by the emergency vehicles in both inside and outside lanes without slowing down, despite the winter weather conditions. As they were talking, Nielson said one of the tow truck drivers noticed a semi start to slide as it headed toward their vehicles in the inside lane. “We saw the tractor and trailer start to go sideways,” Nielson said.The semi’s trailer then hit one of the tow trucks, which slammed into the patrol car, Nielson said, causing the patrol car to spin around and come to rest pinned against the other tow truck. “We got the ladies out of the car,” Nielson said.