Machines | How Adaptive Cruise Control Works - Step One For Autonomous Cars
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How adaptive cruise control works. Adaptive cruise control is one of the first steps in moving towards autonomous driving vehicles, as it allows the vehicle to regulate speed and braking on the highway to maintain a set following interval behind the detected car ahead. This video will look at how Honda implements this system on their vehicles, as well as how Collision Mitigation Braking Systems work. Both systems rely on a millimeter wave radar as well as a monocular camera to detect objects ahead. So how does adaptive cruise control work? The primary purpose of the system is to travel at the speed selected by the driver, just like traditional cruise control. However, if the vehicle detects another car in front of it that is traveling at a slower speed, the vehicle will reduce its speed to match that of the detected car and a then maintain a selected interval behind the car. The system works by emitting radar waves which bounce off of vehicles ahead and return to the unit. This informs the system of the distance between the two vehicles; changes in that distance inform the system of the vehicles’ relative speeds. So how does the Collision Mitigation Braking System work? The goal of the system is to alert the driver if a collision with a detected vehicle is likely, and then to apply the brakes to reduce the severity of a collision if it’s unavoidable. The system scans up to 330 feet of the road in front of the vehicle, and works in three stages if the driver begins to come close to a vehicle detected ahead. This is a sponsored video created by me on behalf of Honda. The opinions stated are all mine. Related Content: Honda Sensing: http://automobiles.honda.com/sensing/ Disclaimer - ACC: ACC cannot detect all objects ahead and may not detect a given object; accuracy will vary based on weather, speed and other factors. ACC should not be used in heavy traffic, poor weather or on winding roads. ACC only includes a limited braking function; driver remains responsible for slowing or stopping the vehicle to avoid a collision. Disclaimer - CMBS: Depending on the circumstances, CMBS may not go through all the alert stages before initiating the last stage (of collision mitigation). CMBS cannot detect all objects ahead and may not detect a given object; accuracy will vary based on weather, speed and other factors. System operation affected by high interior heat. Driver remains responsible for safely operating vehicle and avoiding collisions. Please feel free to rate, comment, and subscribe! And don't forget to check out my other pages below! Facebook: http://www.facebook.com/engineeringexplained Official Website: http://www.howdoesacarwork.com Twitter: http://www.twitter.com/jasonfenske13 Instagram: http://www.instagram.com/engineeringexplained Car Throttle: https://www.carthrottle.com/user/engineeringexplained NEW VIDEO EVERY WEDNESDAY!
Comments
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+Engineering Explained Is it possible to create a small working model based on adaptive cruise control?
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Dead DWTs (Driving While Texting) be like, "duuuuuuuude!"
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Wonderfully explained @engineering explained. Thanks mate.
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What is the sensor used for ACC?
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Can you please make a video explaining the way police use radar to catch speeders and how radar detectors work? Also, if these and other new features such as blind spot monitoring affect radar detectors?
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Edmunds doesn't think highly of Honda's system.
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informative. thanks
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I wonder how a loop of these cars would drive together in a loop.
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A lot of if statements in that code I'm guessing. New programmer here.
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I had ACC on my Accord Plug-in Hybrid and the collision avoidance was a nervous nellie. Even at very low speeds if someone was crossing ahead of me with plenty of room it would panic and sound the alarm. Never hit the brakes on me but it was certainly aware of the potential broadside (if the car ahead hadn't been moving). On the highway, the ACC cruise control sure makes highway driving easier - all you need to do is stay in your lane and the car will do the rest.
I've just switched to a German car with camera based ACC and the performance so far seems the same. Highway driving is very easy and follow distance is maintained nicely... -
I think it is really cool how we have all this tech in cars now, but I'm still a little on edge about it because of the chance some people might get too dependent on the tech and if it malfunctions people won't be able to respond fast enough because they thought it would do it for them.
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My question is what happens if the car behind you slams into the back of you because the computer in your car decided to slow down? I'm not faulting Honda, it's a great safety system I just think it's such a race between auto manufacturers to have the latest and greatest that sometimes important things get overlooked. Also with so many features being automated in cars I think it leads to drivers being more relaxed thinking "I don't have to pay attention the car is" maybe a bit extreme but you get my drift. With all of these systems what happens if they need repaired out of warranty? I think people should consider that if they plan on keeping the car for a long time, and most mechanics won't be able to work on these systems forcing the owner to pay a lot more to go to the dealer. Again I'm NOT saying this is bad, only providing an objective view..
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I have a feeling these systems are going to reek havoc on police radar detectors.
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How can i determent the distance using micro waves?
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Adaptive cruise control is the most annoying feature I've ever experienced on a car so far. I wish I could remove it from our Ford Explorer. It promotes distracted driving because you don't have to pay attention like you used to.
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Hey Jason! Seeing as how Honda sponsored this video, maybe you should ask them for some parts on the Integra!
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would it stop the car completely if the car in front came to a complete stop? thx
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I'll ask it in a less confusing way, I'm thinking you were pointing out a system that helps prevent crashing. what if it makes you brake when you're just trying to slow down and then brake? or is it only active with cruise control?
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Nick obvious orange
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so what does this system do if you let off the gas to slowly come up behind someone, while there's ice/snow on the ground and it decides to brake harder than you want and you slide and hit someone?