The existing HUD product has a fixed information position that is reflected on a windshield, so this leads to frequent movement of a driver's gaze, causing distractions while driving. Meanwhile, we provide our H-HUD System that recognizes both the road situation in front of vehicle and a driver’s pupils to calculate the location of projector reflection. This system displays HUD information at an optimal sight. Depending on exterior or brightness, a HUD projector automatically adjusts light intensity to improve the visibility of information.