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2. Air brake (road vehicle) - Wikipedia

   en.wikipedia.org/wiki/Air_brake_(road_vehicle)

   Truck air-actuated disc brake. An air brake or, more formally, a compressed-air-brake system, is a type of friction brake for vehicles in which compressed air pressing on a piston is used to both release the parking/emergency brakes in order to move the vehicle, and also to apply pressure to the brake pads or brake shoes to slow and stop the vehicle.

3. S-cam - Wikipedia

   en.wikipedia.org/wiki/S-cam

   The S-cam is generally used in heavy trucking applications or commercial vehicles where an air supply is readily available from the vehicle. It is normally powered by air, but hydraulic power can be used too. The S-cam foundation brake is being used in over 85% of vehicles in the U.S. that run with air brakes. [1]

4. Commercial driver's license - Wikipedia

   en.wikipedia.org/wiki/Commercial_driver's_license

   A commercial driver's license is required to operate a tractor-trailer for commercial use. A commercial driver's license (CDL) is a driver's license required in the United States to operate large and heavy vehicles (including trucks, buses, and trailers) or a vehicle of any size that transports hazardous materials or more than 15 passengers (including the driver).

5. Driver's licenses in the United States - Wikipedia

   en.wikipedia.org/wiki/Driver's_licenses_in_the...

   This restriction is issued when a driver either fails the air brake component of the general knowledge test or performs the CDL road skills test in a vehicle not equipped with air brakes. M: CDL-A holders may operate CDL-B school buses only. N: CDL-A and CDL-B holders may operate CDL-C school buses only. O: Driver limited to pintle hook ...

6. Appeals court scraps Nasdaq boardroom diversity rules in ...

   www.aol.com/appeals-court-scraps-nasdaq...

   A federal appeals court blocked Nasdaq rules to increase boardroom diversity, saying that the Securities and Exchange Commission did not have the authority to approve them.. Wednesday’s ruling ...

7. Braking test track - Wikipedia

   en.wikipedia.org/wiki/Braking_test_track

   The braking test track is a fundamental element of the vehicle industry proving grounds, designed for conducting vehicle braking system operability and efficiency tests under various braking circumstances. Such types of tests are highly significant in regard to road safety. Testing is an indispensable step prior to manufacturing newly developed ...