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2. Ohio Bureau of Motor Vehicles - Wikipedia

   en.wikipedia.org/wiki/Ohio_Bureau_of_Motor_Vehicles

   The Ohio Bureau of Motor Vehicles (abbreviated BMV) is an agency of the Ohio Department of Public Safety that registers motor vehicles and issues license plates and driver's licenses in the U.S. state of Ohio. It is headquartered in the state capital, Columbus, and operates deputy registrar's offices and driver exam stations throughout the state.

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

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

   L: Drivers are restricted from operating a commercial vehicle with air brakes. 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.

4. 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.

5. ECE Regulation 90 - Wikipedia

   en.wikipedia.org/wiki/ECE_Regulation_90

   Brake Tests Cold Performance Equivalence and Speed Sensitivity Tests For the tests the vehicle brake for which the replacement linings are designed is installed in an inertia dynamometer instrumented for continuous recording of rotative speed, brake torque, brake line pressure, number of rotations after brake application, braking time, and ...

6. Transportation Research Center - Wikipedia

   en.wikipedia.org/wiki/Transportation_Research_Center

   High Speed Test Track: 7.5-mile (12.1-km) oval test track contains four asphalt lanes on the front straightaway and curves and five asphalt lanes on the back straightaway. The 7.5-mile test track's parabolic banking allows neutral speeds up to 140 mph (225 km/h). The test track features level 2-mile (3.2 km) straightaways.

7. 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).