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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 ...
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]
AEB systems aim to detect possible collisions with the car in front. [50] This is performed using sensors to detect and classify things in front of the vehicle, a system to interpret the data from the sensors, and a braking system which can work autonomously. [51] Some cars may implement lane departure warning systems. [52]
Head-on collision with two cars involved Standard wrong-way sign package used on all freeway off-ramps in the state of California to prevent head-on collisions [1]. A head-on collision is a traffic collision where the front ends of two vehicles such as cars, trains, ships or planes hit each other when travelling in opposite directions, as opposed to a side collision or rear-end collision.
The Allanté was hampered by poor performance, being a front-wheel-drive car powered by a 170 horsepower engine while weighing 3600lbs; Motor Trend measured the Allanté as having a 0–60 time of 10.3 seconds, 4 seconds slower than the Mercedes. [112] This led to the press dismissing the Allanté as "all show, no go". [112]
The system is active up to 31 miles per hour (50 km/h) and steers, brakes, and accelerates the car on its own. [77] It relies on the adaptive cruise control sensing a car in front and clear lane markings to be present. 2016 Audi: Audi A4: Semi-autonomous traffic assistant marketed as "Traffic Jam Assist" offered as an option. Tesla: Model S ...
A crash test illustrates how a crumple zone absorbs energy from an impact. Road Maintenance Truck Impact Attenuator, Auckland, New Zealand Extent of the crumple zones (blue) and the driver's safety cell (red) of an E217 series train The crumple zone on the front of these cars absorbed the impact of an offset head-on collision.
A doughnut or donut is a maneuver performed while driving a vehicle. Performing this maneuver entails rotating the rear or front of the vehicle around the opposite set of wheels in a continuous motion, creating (ideally) a circular skid-mark pattern of rubber on a carriageway and possibly even causing the tires to emit smoke from friction. [1]