He followed Bland on the afternoon of July 10, 2015, on University Drive in Prairie View, Texas, accelerating fast on her rear, closing in so near to her that she changed lanes to give him the right of way, believing he was headed to an emergency call sndat which point he performed the stop for failure to signal a lane change, though he could have still stopped her if she did signal, under a different section of the Texas Transportation Code requiring a continuous lane change signal for a minimum of 100 feet .