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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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Before Every Car Got a Third Brake Light, 343 San Francisco Taxis Had to Prove It Worked

A third brake light is remarkably easy to ignore. It sits in the rear window or above the tailgate, performs one job and receives considerably less attention than the lamps surrounding it. That ano

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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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The Car Is Off. So Why Is the Cooling Fan Still Shouting Under the Hood?

The key has left the ignition. The doors are locked. From beneath the hood comes the unmistakable roar of a large electric fan apparently unaware that the journey ended. Waiting beside the car for

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You Switched Off the Engine, but the Radio Kept Playing. Here Is Why

The engine stops. The dashboard goes dark. The radio continues playing as though it has decided the journey deserves an encore. For a driver unfamiliar with the car, this can produce an immediate r

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You Added Fuel, but the Gauge Ignored It. The Car May Be Doing That Deliberately

The low-fuel light is on, so a few gallons go into the tank. The engine starts, the receipt confirms that actual gasoline was purchased, and the gauge responds by remaining exactly where it was. No

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Your Brake Lights Will Not Turn Off, and the Clue May Be Lying on the Floor

A car sits empty in the driveway, engine off and doors locked, yet all three brake lights are glowing as though an invisible driver has a foot planted on the pedal. It looks like a wiring problem. Pos

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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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Your Brake Pedal Turned Rock Hard With the Engine Off. Here Is What Happened

The engine is off. You push the brake pedal once, then again. Each push feels a little firmer than the last. After several presses, the pedal barely wants to move. That sensation can make it s

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Your Car Promised 80 Miles of Fuel. Ten Miles Later, Half of Them Had Vanished

The fuel light comes on. The dashboard says 80 miles to empty. The next gas station is 35 miles away, so there should be no problem. Ten miles later, the display reads 54. Nothing has leaked out. N

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