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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. Rules of the Road: Do we really need all those traffic signs ...

    www.aol.com/rules-road-really-those-traffic...

    He addressed problem intersections by removing stop signs and signals, speed limit signs, speed bumps, railings, pavement markings; all the things we rely on to keep us safe as we drive.

  4. Road signs in the United States - Wikipedia

    en.wikipedia.org/wiki/Road_signs_in_the_United...

    Stop sign ahead. CW3-1 Stop sign ahead. W3-2 Yield sign ahead. CW3-2 Yield sign ahead. W3-3 ... Another train coming (Activated, Blank-Out) W10-21 Busway Crossing ...

  5. Stop sign - Wikipedia

    en.wikipedia.org/wiki/Stop_sign

    A stop sign is a traffic sign designed to notify drivers that they must come to a complete stop and make sure the intersection (or railroad crossing) is safely clear of vehicles and pedestrians before continuing past the sign. [1]

  6. Noise control - Wikipedia

    en.wikipedia.org/wiki/Noise_control

    Using a combination of sound absorption materials, arrays of microphones and speakers, and a digital processor, a restaurant operator can use a tablet computer to selectively control noise levels at different places in the restaurant: the microphone arrays pick up sound and send it to the digital processor, which controls the speakers to output ...

  7. They film you rolling through stop signs and fine you $100 ...

    www.aol.com/news/socal-parks-agency-fines...

    A California parks agency issues about 17,000 tickets a year for stop sign violations, such as 'rolling stops,' bringing it more than $1 million a year. They film you rolling through stop signs ...

  8. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    In the US, a single-aspect flashing amber signal can be used to raise attention to a warning sign and a single-aspect flashing red signal can be used to raise attention to a "stop", "do not enter", or "wrong way" sign. [32] Flashing red or amber lights, known as intersection control beacons, are used to reinforce stop signs at intersections. [33]

  9. Rumble strip - Wikipedia

    en.wikipedia.org/wiki/Rumble_strip

    The noise levels at the sidewalk ranged from 60 to 77 decibels, higher than the 60 decibel noise level limit in the Town's Noise Ordinance during nighttime hours. [53] In 2005, the London borough of Bromley removed transverse rumble strips after residents complained of the excessive "machine gun fire" noise. [ 54 ]

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