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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]
The device makes hybrid electric vehicles sound more like conventional internal combustion engine cars when the vehicle goes into the silent electric mode (EV mode), but at a fraction of the sound level of most vehicles. At speeds higher than between 20 miles per hour (32 km/h) to 25 miles per hour (40 km/h) the sound system shuts off.
Noise, vibration, and harshness (NVH), also known as noise and vibration (N&V), is the study and modification of the noise and vibration characteristics of vehicles, particularly cars and trucks. While noise and vibration can be readily measured, harshness is a subjective quality, and is measured either via jury evaluations, or with analytical ...
Automotive aerodynamics is the study of the aerodynamics of road vehicles. Its main goals are reducing drag and wind noise, minimizing noise emission, and preventing undesired lift forces and other causes of aerodynamic instability at high speeds. Air is also considered a fluid in this case.
It should be illegal to drive your car in a circle like a jerk.” New laws would bring higher fines and harsher penalties for motorists. Boise plans legal speed bumps for downtown cruise, targets ...
The 'classic' one-car crash results when a vehicle slowly drifts to the right, hits dirt or rumble strips on the right shoulder of the road, and the driver becomes alert and overreacts, jerking the wheel left to bring the vehicle back onto the road. This motion causes the left front tire to strike the raised edge of the pavement at a sharp ...
economics, top speed, range, cargo capacity lower is better if area is too small, vehicle becomes difficult to use Fuel economy: mpg (US) mpg (imperial) l/100 km and km/L economics, range greater is better (mpg and km/L), lower is better (L/100 km) must be specified on new vehicles for sale in the US and UK Maximum g-force(s) g or ft/s 2: g or ...
One of those vehicles, a 2009 ES 350, was given as a loaner car to California Highway Patrol officer Mark Saylor on August 28, 2009. Saylor and his wife, daughter, and brother-in-law were driving on State Route 125 in San Diego, California, when their car accelerated out of control and crashed into an embankment , killing everyone in the car.