Discription of Events: White female with brown hair driving silver Chevrolet Uplander license plate LRL5393 ran stop sign at Brand road and Apollo Tailgaiting all the way down Brand street heading north. Took left turn from right lane at Brand and Naaman School road Red light. Speeding over 80 MPH on service Road for Bush 190 HWY. Turned right on Shiloh at 80 mph heading north. I saw her yelling on her cell phone at Shiloh and Plano parkway headed North. 12:26 p.m. approx..