This creates a danger since the vehicle head lights must be aligned appropriately in a way that they do not blind the driver of another car or hinder visibility throughout the night and in poorly lit areas. The aim should be checked every 12 months and whenever there is a change of a front-headlight or if there is a replacement of front-end body work. The following is a procedure to lead to an effective temporary fix until the proper alignment can be done by a professional. Start with the Phillips head little screwdriver in order to manipulate the vertical mobility by the screws that can be found in the top part of the projector headlight. As a basic modification, stand a wall without any markings at a distance of twenty-five feet from the vehicle and preferably on a flat area. masking tape to mark out the vehicle centerline as well as the centerline of one head-light; place an additional horizontal tape line. It is preferable that the vehicle is not tilting; a gas tank halfway filled and no excess weight. Low beam adjustment can be done by aligning the high intensity zones two inches below the horizontal centrally drawn line on the front of the car and two inches to the side of the headlight's vertical line pointing towards oncoming traffic adjust the top screw clockwise to raise the beam and counterclockwise to lower it. It is noted that the high intensity part of the beam should be aimed at the point immediately below the horizontal axis, while low beams are used more often than high and are vital for safety. There may be slight misalignments that may need the attention of a dealer or an automotive service station in the shortest possible time.