THE HID HEADLIGHT BEAM OF THE 2015 CHEVROLET IMPALA LT IS VERY POOR. THE BEAM OF LIGHT IN THE LOW SETTING PROVIDES NO ILLUMINATION TO THE SIDES OF THE ROAD, FORWARD ILLUMINATION IS MARGINAL. I CONTEND THAT WHEN THE 2015 IMPALA LIGHTS ARE ON THE HIGH OR "BRIGHT" SETTING IT IS COMPRABALE TO THE LOW BEAM SETTING IN MY 2012 IMPALA. IN MODERATE TO HEAVY WEATHER, RAIN, SLEET, SNOW THE HEADLIGHTS OFFER NO ASSISTANCE, DRIVER IS NAVIGATING BLIND, CAN NOT EVEN SEE THE LINES ON THE ROAD. I LIVE AND DRIVE PRIMARILY IN A RURAL AREA, ALONG WITH THE WEATHER CONDITIONS THERE ARE MANY WILDLIFE HAZARDS. I HAVE EXPERIENCED SEVERAL CLOSE ENCOUNTERS WITH WILDLIFE AND TWO IMPACTS, ONE WITH A DEER CAUSING SUBSTANTIAL DAMAGE TO MY CAR. I SIMPLY CAN NOT SEE ANYTHING UNTIL IT IS DIRECTLY IN FRONT OF THE CAR. IT IS IN MY JUDGEMENT THESE HEADLIGHTS ARE UNSAFE NOT ONLY FOR THE OCCUPANTS OF THE VEHICLE, BUT OTHERS SHARING THE ROADS WITH THE VEHICLE.