Why are the headlights uneven in height?

[DeRemington]

Headlights are uneven in height because traffic regulations require the low beam pattern to be lower on the left and higher on the right. One side lower than the other: One side is lower than the other, typically with the left side lower and the right side higher. This design is actually for safety considerations. In right-hand traffic systems, oncoming vehicles are mostly on the left side of the car's front. During nighttime driving when encountering oncoming traffic, if dazzled by the opposing headlights, there's a high risk of temporary vision loss, which is extremely dangerous. Different headlight beam patterns: Different vehicles have varying headlight beam patterns, categorized into American standard, hybrid standard, and European standard patterns. The hybrid standard combines features of both American and European standards, better aligning with the practical distribution of visibility and dark zones during driving, hence the uneven height of car headlights. However, with technological advancements, smart headlights represent the future direction of automotive lighting.