What are the items for headlight inspection?
4 Answers
Front: Check left and right turn signals, fog lights, parking lights, high beams, low beams, and dimming lights. Rear: Check left and right turn signals, parking lights, brake lights, reverse lights, and license plate lights. In addition to the above, there are also interior reading lights and front and rear row dome lights, all located overhead. Below is relevant information: Definition: Headlights are also known as main beams, with 'headlights' being the formal term and 'main beams' the colloquial name. Headlights have high beam and low beam functions. Low beams are used for close-range visibility, while high beams provide long-distance illumination and a broader field of vision. Notes: Headlights are lighting devices installed on both sides of the front of a car, used for road illumination during nighttime driving. As modern vehicle speeds increase, the required illumination distance also grows. The illumination distance of a car's low beams is approximately 50 meters. The positioning requirements mainly ensure the illumination of the entire road surface within the lighting distance and prevent deviation from the road surface.
As a daily driver, I regularly check my headlights to prevent nighttime driving issues. Mainly testing brightness: find a dark spot to observe if the lights are adequately bright but not glaring; then calibrate the angle using a simple method like adjusting vertical and horizontal lines against a wall to avoid misalignment; test the high-low beam switching response speed to ensure no delay; check the cleanliness of the lens—clean or replace if there's dirt or cracks; finally, simply test the wiring connections for stability to prevent loosening or detachment. Occasionally, I also check if the automatic adjustment system works properly, such as leveling automatically on slopes. Spending 5 minutes on this before long trips can prevent blurred night vision or accident risks, especially crucial during rainy or foggy conditions. Developing this habit is simple and cost-effective.
During vehicle maintenance, we typically cover multiple items to ensure lighting compliance. Step one involves using a photometer to measure luminous intensity, ensuring it meets safety standards to avoid being too dim or dazzling. Step two requires adjusting the alignment tool to calibrate vertical height and horizontal scatter, preventing interference with other drivers. Step three involves inspecting the integrity of the lamp cover and reflector to prevent contamination or aging. Step four tests the functionality of the control module, such as high-low beam switching and automatic adjustment response. Step five involves checking for corrosion or short circuits in the wiring connections. These steps require professional equipment and regular operation to prevent escalating faults, saving owners future costs while enhancing driving safety and reliability, especially crucial during high-speed driving or in adverse weather conditions.
I believe headlight inspection should focus on practical aspects. The brightness should be moderate - not too dim to impair visibility nor too glaring; the angle should be properly adjusted to avoid useless upward projection; the high-low beam switching should be quick without lag; the lens should be clean and crack-free to prevent light scattering; and a simple circuit test ensures stable connections. This guarantees clear night vision and reduces accident risks. Remember to conduct regular checks for safety and reliability.
