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2. Road slipperiness - Wikipedia

   en.wikipedia.org/wiki/Road_slipperiness

   Road slipperiness can be measured either in terms of the friction between a freely-spinning wheel and the ground, or the braking distance of a braking vehicle, and is related to the coefficient of friction between the tyre and the road surface. Public works agencies spend a sizeable portion of their budget measuring and reducing road slipperiness.

3. Skid mark - Wikipedia

   en.wikipedia.org/wiki/Skid_mark

   Skid marks are divided into "acceleration marks" created on acceleration, if the engine provides more power than the tire can transmit; "braking marks", if the brakes "lock up" and cause the tire to slide; or "yaw marks", if the tire slides sideways. Each skid mark has a characteristic appearance, and an experienced accident reconstructor or ...

4. Split friction - Wikipedia

   en.wikipedia.org/wiki/Split_friction

   The road may then not be perceived as hazardous when accelerating, cruising or even braking softly. But in a case of hard (emergency-)braking, the car will start to rotate over the wheelpath offering highest grip. Split friction may cause jack-knifing of articulated trucks, while trucks with towed trailers may experience trailer swing phenomena.

5. Brake - Wikipedia

   en.wikipedia.org/wiki/Brake

   Further, brakes are often mounted on wheels, and unsprung weight can significantly hurt traction in some circumstances. "Weight" may mean the brake itself, or may include additional support structure. Noise – Brakes usually create some minor noise when applied, but often create squeal or grinding noises that are quite loud.

6. Airlines seen making $1 trillion for the first time in history

   www.aol.com/airlines-seen-making-1-trillion...

   The global airline industry will likely rake in more than $1 trillion in revenue next year, as passenger numbers look set to hit an all-time high of 5 billion, the International Air Transport ...

7. Brake fade - Wikipedia

   en.wikipedia.org/wiki/Brake_fade

   Brake fade can be a factor in any vehicle that utilizes a friction braking system including automobiles, trucks, motorcycles, airplanes, and bicycles. Brake fade is caused by a buildup of heat in the braking surfaces and the subsequent changes and reactions in the brake system components and can be experienced with both drum brakes and disc ...