Terre Haute, In. – If you travel U.S. 41 South be prepared for a new traffic light to be operational this week.  The Light is located at U.S. 41 and McCallister Drive/Hospital Lane.  The light is a half block north of the light that used to be at the entrance to the Vigo County Fairgrounds. After INDOT decided to move the light they told the for fair board they should move the entrance to the fairgrounds north to the light. The signal relocation was to improve safety and provide better access to McCallister Drive, the fairgrounds and commercial lots.