What is LANE CENTERING? What does LANE CENTERING mean? LANE CENTERING meaning — LANE CENTERING definition — LANE CENTERING explanation.
Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license.
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In road-transport terminology, lane centering is a mechanism designed to keep a car centered in the lane, relieving the driver from the task of steering. Lane departure warning systems are similar to lane centering technology, but tend to have the negative effect of weaving inside the lane. Features that differentiate systems are how well they perform on turns, speed limitations and whether the system resumes from a stop. Together with adaptive cruise control these vehicles allow unassisted driving for some seconds. Most vehicles require hands on the wheel, but GM super cruise monitors the driver’s eyes to ensure human monitoring of the road, and thus allows hands-free driving.
The first commercially available lane centering systems were all based on off-the-shelf systems created by Mobileye, such as the Tesla Autopilot and Nissan Propilot, although Tesla has switched to an in-house system when Mobileye ended their partnership. A handful of companies like Bosch, Delphi, and Mobileye provide sensors, control units, and even algorithms to car makers, who then integrate and refine those systems. While not directly attributable to lane centering, crash rates on the Tesla Model S and Model X equipped with the Mobileye system were reduced by almost 40% while Tesla Autopilot was in use.
Current lane centering systems rely on visible lane markings. They cannot decipher faded, missing, incorrect or overlapping lane markings. Markings covered in snow or old lane markings left visible can hinder the ability of the system. GM’s Super Cruise only works on known freeways that have been previously mapped.
In addition to passenger vehicles, Semi trucks are expected to be fitted with this technology, starting with the Tesla Semi and other vendors in 2019.
The lane detection system used by the lane departure warning system uses the principle of Hough transform and Canny edge detector to detect lane lines from real-time camera images fed from the front-end camera of the automobile. A basic flowchart of how a lane detection algorithm works to produce lane departure warning is shown in the figures.
Mobileye claims 11 automakers will incorporate their EyeQ4 chip that enables L2+ and L3 autonomous systems. This would collectively represent more than 50% of the auto industry. Level 2 automation is also known as «hands off»: this system takes full control of the vehicle (accelerating, braking, and steering). Level 3 is also known as «eyes off»: the driver can safely turn their attention away from driving, e.g. the driver can text or watch a movie. Will launch in 2018 and 2019.
Average selling price for the EyeQ4 chip to auto makers is about $450 U.S. dollars.
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