Most motorists have the brights to appreciate there are at least two good reasons vehicles have headlights: 1) so the operator can illuminate the road ahead when natural or street lighting isn’t enough; 2) so other operators easily can see your vehicle, especially in a rear view mirror or with peripheral vision when visibility is less than ideal, such as inclement weather, early morning, late afternoon and what skiers know as “flat conditions,” where lack of sun obscures details in your line of sight such as contours under foot or moving objects at a distance.