Assist systems overlap ?
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Joined: Sep 2014
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Assist systems overlap ?
I have been trying to decode how the various assist systems work. Being new to MB it took some time, and I am still not sure i got it right.
Am i wrong in deducting that there seems to be some overlap with the newest system "Collision Prevention Assist Plus" (note the "Plus") and the (older) BAS systems?
Initally i was not aware that the Collision Prevention Assist Plus system would perform true AEB (autonomous braking) I thought it only modulated the brake force once the driver applied the brake pedal, but the Euro NCAP appears to describe a true AEB function at lower speeds.
http://www.euroncap.com/results/merc...class/546.aspx
1) Does anyone know where the sensor(s) for "Collision Prevention Assist Plus" is located and can comfirm if the sensors are radar or light based?
2) Would anyone know the maxumum value of brake force, Collision Prevention Assist Plus will apply in true AEB mode? The test by Euro NCAP, would indicate no more then 40-60%
Am i wrong in deducting that there seems to be some overlap with the newest system "Collision Prevention Assist Plus" (note the "Plus") and the (older) BAS systems?
Initally i was not aware that the Collision Prevention Assist Plus system would perform true AEB (autonomous braking) I thought it only modulated the brake force once the driver applied the brake pedal, but the Euro NCAP appears to describe a true AEB function at lower speeds.
http://www.euroncap.com/results/merc...class/546.aspx
1) Does anyone know where the sensor(s) for "Collision Prevention Assist Plus" is located and can comfirm if the sensors are radar or light based?
2) Would anyone know the maxumum value of brake force, Collision Prevention Assist Plus will apply in true AEB mode? The test by Euro NCAP, would indicate no more then 40-60%
Last edited by Pete1968; Sep 27, 2014 at 02:40 PM.
Junior Member
Joined: Aug 2014
Posts: 62
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From: UK
Mercedes C250 Bluetec AMG
I have been trying to decode how the various assist systems work. Being new to MB it took some time, and I am still not sure i got it right.
Am i wrong in deducting that there seems to be some overlap with the newest system "Collision Prevention Assist Plus" (note the "Plus") and the (older) BAS systems?
Initally i was not aware that the Collision Prevention Assist Plus system would perform true AEB (autonomous braking) I thought it only modulated the brake force once the driver applied the brake pedal, but the Euro NCAP appears to describe a true AEB function at lower speeds.
http://www.euroncap.com/results/merc...class/546.aspx
1) Does anyone know where the sensor(s) for "Collision Prevention Assist Plus" is located and can comfirm if the sensors are radar or light based?
2) Would anyone know the maxumum value of brake force, Collision Prevention Assist Plus will apply in true AEB mode? The test by Euro NCAP, would indicate no more then 40-60%
Am i wrong in deducting that there seems to be some overlap with the newest system "Collision Prevention Assist Plus" (note the "Plus") and the (older) BAS systems?
Initally i was not aware that the Collision Prevention Assist Plus system would perform true AEB (autonomous braking) I thought it only modulated the brake force once the driver applied the brake pedal, but the Euro NCAP appears to describe a true AEB function at lower speeds.
http://www.euroncap.com/results/merc...class/546.aspx
1) Does anyone know where the sensor(s) for "Collision Prevention Assist Plus" is located and can comfirm if the sensors are radar or light based?
2) Would anyone know the maxumum value of brake force, Collision Prevention Assist Plus will apply in true AEB mode? The test by Euro NCAP, would indicate no more then 40-60%
2) well it can apply 100% percent brake power if needed to make a full stop, however the system is working well, prevent collision if speed is max 50km/h above that well it reduce impact power but does not unfortunately prevent it. But it is still the best available on the market.
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Thx for the info on the radar. very useful info.
Re. the applied brake force, looking at the test video, I very much suspect that the system will never apply more then ca. 50%. At up to 50 km, from the point the system commences the AEB function, it does not require full brake force to bring the car to full stop.
At higher speeds, (where the collision is not avoided) the system clearly does not apply full brake force, or even half. I am however sure this is what the Engineers intended. They did not design the system to fully take over for the driver at higher speeds.
Re. the applied brake force, looking at the test video, I very much suspect that the system will never apply more then ca. 50%. At up to 50 km, from the point the system commences the AEB function, it does not require full brake force to bring the car to full stop.
At higher speeds, (where the collision is not avoided) the system clearly does not apply full brake force, or even half. I am however sure this is what the Engineers intended. They did not design the system to fully take over for the driver at higher speeds.
Junior Member
Joined: Aug 2014
Posts: 62
Likes: 0
From: UK
Mercedes C250 Bluetec AMG
Thx for the info on the radar. very useful info.
Re. the applied brake force, looking at the test video, I very much suspect that the system will never apply more then ca. 50%. At up to 50 km, from the point the system commences the AEB function, it does not require full brake force to bring the car to full stop.
At higher speeds, (where the collision is not avoided) the system clearly does not apply full brake force, or even half. I am however sure this is what the Engineers intended. They did not design the system to fully take over for the driver at higher speeds.
Re. the applied brake force, looking at the test video, I very much suspect that the system will never apply more then ca. 50%. At up to 50 km, from the point the system commences the AEB function, it does not require full brake force to bring the car to full stop.
At higher speeds, (where the collision is not avoided) the system clearly does not apply full brake force, or even half. I am however sure this is what the Engineers intended. They did not design the system to fully take over for the driver at higher speeds.
Thread Starter
Junior Member
Joined: Sep 2014
Posts: 59
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Yes but i think the car in that video is from "Internal MB" tests, it is not Euro NCAP tests, and i think the sytem in use is PRE SAFE. This system is based (i think) on stereo cameras, placed in the windshield behind the rear view mirror.
If Collision Prevention Assist PLUS, is able to detect Pedestrians, that would be a huge plus.. but i suspect it can only detect other vehicles.
If Collision Prevention Assist PLUS, is able to detect Pedestrians, that would be a huge plus.. but i suspect it can only detect other vehicles.
Last edited by Pete1968; Sep 28, 2014 at 07:35 AM.
