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Without your headlights, you wouldn’t last long while night driving. A deer, a fallen tree, or a car parked by the side of the road would all become invisible. Cars that can’t see you could pull in front of you and cause a head-on crash. Dim headlights are also risky. If your speed only allows a few seconds to stop your car when you first see a road obstruction, then you’re out-driving your headlights. Dim headlights prevent you from seeing long distances down the road. Either you must slow down.