MADISON, Wis. -

Gary Lammert, the truck driver charged with homicide by negligent operation of a vehicle in the death of 22-year-old Katie Binning, was involved in three previous crashes in Colorado according to records obtained through the Colorado State Patrol.

Lammert, 50, of Anaconda, Montana, is alleged to have caused the accident that claimed the life of Binning on May 30, 2012, in the town of Black Earth. Binning was stopped on Highway 14 waiting to turn into Wisconsin Heights School, where she was a student teacher when her car was struck from behind by Lammert's truck. The force of the impact pushed Binning's car into the intersection where it was struck by another vehicle.  Binning was pronounced dead at the scene.

A check of Lammert's driving record shows he had been cited in three previous accidents in Colorado.

In August of 2004 Lammert was involved in an accident in Colorado while driving a truck for CHS Inc.  He was ticketed in that accident for a lane violation. 

Three months later, on Nov. 5, 2004 the truck Lammert was driving went through a guardrail and rolled 250 feet down a hillside on Loveland Pass in Colorado.  Lammert was ejected from the truck and according to published reports sustained serious head injuries.  He was flown by Flight for Life to a Denver hospital.  The truck Lammert was driving was carrying 7,200 gallons of diesel fuel and according the EPA approximately 2,000 gallons spilled as a result.  The truck Lammert was driving was owned by CHS Inc.

According to Colorado State Patrol records the road conditions were considered dry at the time of the accident and the cause was determined to be excessive speed.

In January of 2010 Lammert was again involved in an accident in Colorado.  The cause of that accident was also determined to be excessive speed.  At the time of that accident he was driving for Agland Inc.

The criminal complaint into Katie Binning's death makes reference to Lammert’s injuries from the 2004 crash on Loveland Pass.  The Dane County Sheriff’s Deputy Paul Miller observed, “the defendant had a hard time speaking as if he had some type of medical problem.” 

Kerrie Lynn Wester was in the truck with Lammert at the time of the crash in the Town of Black Earth.  She told investigators Lammert had been involved in the 2004 crash on Loveland Pass and was severely injured.  She stated Lammert went through extensive rehabilitation time and had suffered severe injuries to his legs and walked slowly and with a limp as a result.

U.S. Department of Transportation records show the motor carrier license for Lammert Transportation, which was owned by Lammert was revoked twice previously.  It was first revoked in 2007 and then reinstated in 2010.  Several months later it was again revoked and the current status is "not authorized for interstate operation."