What exactly does the headlight aiming operation consist of in the vehicle's lighting system?

Question

DentroTest · Accepted Answer

Headlight aiming consists of calibrating the orientation of the light beam both in the vertical plane (height or tilt) and in the horizontal plane (lateral deviation). Its purpose is twofold: to give maximum visibility and range on the roadway at night or in bad weather, and to avoid dazzling road users who are oncoming or ahead. Modifying the physical width of the headlight is not aiming: that dimension is fixed at manufacture and cannot be altered. And placing the beam in the lowest possible position is not aiming either: it would dangerously reduce the illuminated distance of the road and prevent obstacles from being anticipated in time.

What exactly does the headlight aiming operation consist of in the vehicle's lighting system?

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