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  2. Train noise - Wikipedia

    en.wikipedia.org/wiki/Train_noise

    This reduces noise in problem areas although trains make a distinctive tonal sound on freshly-ground track due to the pattern on the rail left by the grinding process, which wears flat over time. Rail squeal is a sound caused by a train's wheels slipping under specific conditions, usually around sharp curves.

  3. 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. NoiseBrakes usually create some minor noise when applied, but often create squeal or grinding noises that are quite loud.

  4. Brake pad - Wikipedia

    en.wikipedia.org/wiki/Brake_pad

    Brake pads with a higher coefficient of friction provide good braking with less brake pedal pressure requirement, but tend to lose efficiency at higher temperatures. Brake pads with a smaller and constant coefficient of friction do not lose efficiency at higher temperatures and are stable, but require higher brake pedal pressure.

  5. 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 ...

  6. Brake wear indicator - Wikipedia

    en.wikipedia.org/wiki/Brake_wear_indicator

    The embedded sensor in the brake pad 2 contacts the rotor and creates a connection to ground of the sensor. The metal plate 3 contacts the rotor and creates a noise. This wear clip should be positioned so that the rotor contacts the clip before it contacts the brake pad. The rotor should push against that clip, not drag it away from the brake pad.

  7. Brake fade - Wikipedia

    en.wikipedia.org/wiki/Brake_fade

    In contrast, for a brake without self-assist, such as a conventional disc brake, a loss of pad friction material does not change the pad force, so there is no necessary loss in the brake torque reaction for a given amount of input force. The self-assist mechanism affects the water pump and the amount of fade.

  8. 'I can go.' Dodger Freddie Freeman endures hours of therapy ...

    www.aol.com/news/dodger-freddie-freeman-endures...

    Dodger Freddie Freeman runs to first after hitting a single during the first inning of Game 5 of the NLDS against the San Diego Padres at Dodger Stadium on Friday.

  9. Roadway noise - Wikipedia

    en.wikipedia.org/wiki/Roadway_noise

    Roadway noise is the collective sound energy emanating from motor vehicles. It consists chiefly of road surface, tire, engine/transmission, aerodynamic, and braking elements. Noise of rolling tires driving on pavement is found to be the biggest contributor of highway noise and increases with higher vehicle speeds. [1] [2] [3]