Does Car Glass Have a Speed-Reducing Visual Effect?

[SanCarlos]

Car glass does have a speed-reducing visual effect. Here are the relevant details: 1. Speed-reducing glass: Speed-reducing glass is essentially the laminated front windshield commonly referred to in cars. Some tempered front windshields have poor optical performance and uneven transitions, which can cause drivers to experience eye fatigue and dizziness after prolonged driving. In contrast, glass with good optical performance and no optical distortion provides clear visibility from inside the car. Additionally, the incorporation of new technologies makes the light passing through the glass softer, thereby creating a sensation of reduced speed. 2. Principle: The principle of glass is to transmit light, and the best effect it can achieve is to make the presence of the glass indistinguishable from its absence. In reality, speed-reducing glass does not make the movement of external objects appear slower than their actual speed; instead, it makes them appear consistent with the actual speed—just as if there were no glass at all.

[StWalter]

While driving, I often notice the sensation of vision, where the car glass itself doesn't have a speed-reducing visual effect. As someone who has driven for many years, I've always felt that the glass is just a transparent barrier—it allows me to see everything outside clearly but doesn't slow down the movement of objects. In reality, the perception of slowing down is a visual illusion. For example, when driving at high speeds, distant hills may appear to move slowly, while nearby vehicles zoom past. This is due to relative motion and depth perception. The glass is made of safety materials, such as laminated or tempered glass, designed to ensure high transparency and impact resistance while avoiding distortion. If the glass is dirty or blurry, it can make objects appear disjointed and affect speed judgment. I always make it a habit to check the cleanliness of the glass before driving to avoid hazards caused by malfunctioning wipers or dust buildup, as this helps me maintain a true field of vision and prioritize safety while driving.

[JasperAnn]

The glass in a car is essentially a transparent window. After driving for so many years, I've never felt that it can slow things down. The sensation of deceleration is an illusion caused by the relative movement of objects when the car is moving fast, while the glass's job is to provide clear visibility. If the glass is dirty or scratched, visibility worsens, leading to confusing illusions. For safe driving, I make sure to clean the glass regularly to keep it spotless. I recommend treating the glass every time you wash the car, especially the windshield, to prevent fog or dust from causing trouble. A clear view is more important than any visual effect because road conditions can change in an instant.

[MaximusLee]

As an ordinary car enthusiast, I personally experienced that when driving at high speeds, objects outside appear to move faster as the vehicle's speed increases, but the glass itself has no decelerating magic. The deceleration effect is purely due to relative speed. For example, the higher the speed, the faster nearby trees whiz by, while distant mountains seem to move slowly. The design of the glass ensures transparency without distortion. If there's an anti-glare coating, it only reduces discomfort from strong light. I believe keeping the glass clean is most crucial, as dirt can cause misjudgment of speed. Before every drive, I give it a quick wipe to avoid potential hazards.