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How Dark Sky Cities Light Their Roads Without Erasing the Stars

The phrase “dark sky city” can conjure an impractical picture: roads disappearing into blackness, pedestrians carrying flashlights and local astronomers celebrating while everyone else dri

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Your Headlights Perform a Little Bow at Startup. They May Be Checking Their Own Aim

Start certain cars in front of a garage wall and the headlights put on a brief performance. The beams drop, rise and settle. Some sweep sideways too, giving the impression that the car has opened i

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One Stripe of Fog Refuses to Leave Your Rear Window. The Fix May Be Almost Invisible

The rear defroster has been running for several minutes. Most of the glass is clear, traffic behind the car has returned to recognizable shapes, yet one narrow stripe of fog remains stretched across t

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Stop-Start Worked Yesterday but Refuses Today. Your Car May Know Something You Do Not

Automatic stop-start has a peculiar talent for irritating drivers both when it works and when it does not. At one traffic light, the engine shuts down the moment the car stops. At the next, it keep

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Only One Reverse Light Works, but the Red Lamp Beside It Is Not Broken

Select Reverse, walk behind the car and one white lamp comes on. The other stays dark. The rear light clusters look symmetrical. Both contain clear and red sections. Surely one bulb has fail

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Is It Illegal to Drive With Interior Car Lights On? 2026 State Guide

Quick answer? You're fine. Nobody is getting arrested for flicking on the cabin light to dig through a glovebox at midnight. Not in any of the fifty states. There simply isn't a law on the boo

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Car News
Mercedes Just Made the GLS Even More Loaded Than Before

Mercedes has reworked the GLS for 2027, and the focus is clear. More tech, more comfort, and a bit more presence. This is their take on a full-size luxury SUV that tries to cover everything in one pac

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Video
Headlights in the Rain: “Wipers On, Lights On” Laws Across All 50 States Explained

Depending on where you got your driver's license, certain habits behind the wheel are probably second nature. Especially safety decisions based on weather. Might have left you confused why not eve

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Denmark Tests Red Streetlights to Protect Bats Without Sacrificing Night Road Safety

A neighborhood north of Copenhagen just made a pretty wild change to its streets at night: red streetlights instead of white ones. In Gladsaxe, officials have been swapping out regular streetlights fo

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Why Traffic Lights Use Fresnel Lenses: The Secret to High-Visibility Signals

Traffic lights seem about as simple as it gets. A colored light turns on, drivers react, everyone moves on. But if it were really that simple, traffic lights would actually be a lot harder to read &md

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