Sept. 18, 2025 By Tila Grant DALLAS — Imagine North Texas at rush hour: Cars streaming down roadways, intersections humming with activity, and traffic lights blinking in perfect rhythm. Behind the scenes, a group of unsung heroes work tirelessly—often before dawn, sometimes through the night—to keep it all running smoothly. The signal technicians at TxDOT are the quiet conductors behind the scenes, ensuring traffic flows smoothly.