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jamesinger
03-24-2017, 08:02 PM
I do not usually post threads but after searching and reading a lot on Audi's Adaptive Cruise Control (ACC), I felt this thread is warranted for the SO. Cal. part of this forum.

I have had a 2012 A4 Avant Prestige S-Line for a couple years now. I really love the car, and the ACC is a real game changer. However, driving in LA it seems like the ACC is inadequate for the vehicular warfare that I am in on any given day (i.e. East Pasadena 210e --> 134e --> 101e to Woodland Hills). I really love the ACC feature but in the more contentious drive time traffic, I feel it is almost dangerous to use when people are swerving in and out of lanes while slamming on their brakes and then jamming on the accelerator in seemingly typical nonsensical LA driver fashion. What happens to me is the brake guard starts dinging and even vibing the brakes. Sometimes the car will even surge at a car that just cut me off only to then freak out and start dinging and etc. Other times, I will step in and brake because it seems like the car has seen the red mist and is just going to ram the offending car [headbang].

The reason I feel it is worth trying to start a discussion is because I would like to know other people's strategies for dealing with ACC in LA traffic. My ACC cuts out at 12mph. That is OK with me but what is more annoying than the lack of stop and go is the car's inability to deal with the wild side of LA traffic at speeds of around 20-60mph, mainly when flow is slow but with random people trying to punch through traffic with sporadic lane changes. It might just be the case that my expectations are unreasonable. I am OK with that...but I would really like to use ACC in heavy traffic because that is really where I want it to work the most.

Just FYI, because of the type of person I am, I have driven in Dynamic with varying space cushions, regular also with varying space cushions, and comfort with varying space cushions. I have also tried different lanes and speeds. My current technique is to set the ACC to comfort at 80 mph with only a single car length distance while sticking to the #1 or 2 lanes (i.e. the "passing" lane or the lane next to the passing lane. This works best but still not within my expectations. What my fantasy would be is to be able to set the ACC and just let it do its thing from Pasadena to Woodland Hills without drama. If I go under 12mph, it would be nice to have stop and go but I am OK with having to take over at that speed. However, it would be nice to be able to leave the ACC on at speeds of over 12mph and up to 75 or so.

Have you other people with ACC figured out any interesting tips or tricks to get the ACC to deal with LA traffic, or is it just a dream?? Please tell me your stories or give any tips/tricks.

Thank you for your feedback.

p.s. flame suit is on. I am totally ready to be laughed at for my expectations.

skiracerblah
03-24-2017, 10:20 PM
https://halfelf.org/wp-content/uploads/sites/2/2013/07/yousuck.gif


The ACC in my Lexus works perfectly fine....

jamesinger
03-24-2017, 10:50 PM
https://halfelf.org/wp-content/uploads/sites/2/2013/07/yousuck.gif


The ACC in my Lexus works perfectly fine....

I thought you drive a 92 Accord???

skiracerblah
03-24-2017, 10:54 PM
I thought you drive a 92 Accord???

I used to drive a '98 Accord , but it died at 280K miles...

jamesinger
03-24-2017, 10:57 PM
I thought you drive a 92 Accord???

So seriously though, how do you set the ACC on your Lexus then because with the Audi ACC every time someone cuts me off it sends the brake guard into a panic. Also, the accelerating at cars that cut me off is uncanny as well.

skiracerblah
03-24-2017, 10:59 PM
Oh, here's me using some sort of ACC on the 101....


https://www.youtube.com/watch?v=10AynWu_Yfk

jamesinger
03-25-2017, 07:48 AM
For me, the ACC is all well and good until people start cutting in and out of lanes or if a motorcycle lane splits too far into the lane. It also has issues with the seemingly LA specific phenomenon of full gas or full brakes only. This is especially the case on the 405 between the 101 and the 10.

***also, there is a ton of information on ACC online, just not much about Audi***

0396
03-25-2017, 08:47 AM
With the amount of traffic on the 210 134,etc. I think is suicidal to use in on the LA freeway. Its not like your on I5 where its a straight line for miles. You have " balls " .. , I don't know anyone who uses CC in traffic. You feel safe, just continue to do what your doing.

Oh, I once asked my instructor at Buttonwillow about why " certain " students have to be kicked off the session. Response was, there's always one out there.

jamesinger
03-25-2017, 02:48 PM
With the amount of traffic on the 210 134,etc. I think is suicidal to use in on the LA freeway. Its not like your on I5 where its a straight line for miles. You have " balls " .. , I don't know anyone who uses CC in traffic. You feel safe, just continue to do what your doing.

Oh, I once asked my instructor at Buttonwillow about why " certain " students have to be kicked off the session. Response was, there's always one out there.

With the ACC, operative word ADAPTIVE, especially ones with the full Stop and Go feature, it is actually designed for using in traffic because it adjusts speed accordingly for you. My feeling is that it is not as useful as advertised in LA traffic. I will add that in the OC, San Diego and in the Bay Area up into Sacto and Tahoe, it works great for light to medium traffic. However, I do not feel ACC works in LA high drama traffic.

Your Buttonwillow analogy is weak nevertheless. I am using something as is was "designed." My primary concern is that it is not designed with LA in mind, which is the worst traffic I have ever been in. Nevertheless, I can live in hope that something will make the commute more chill. I have been doing it for 10 years now, and it is a bummer. It would be weird to try to use the old style CC in traffic. What I am talking about is something that is designed to regulate speed for you from 10mph +. Newer ACC equipped Audis have a feature that will fully stop the car and accelerate again in relation to traffic. Other brands have this feature as well, most namely Tesla. People use ACC specifically for these heavier traffic situations.

0396
03-25-2017, 06:45 PM
Buttonwillow explanation is weak...oh well. I better find me a safe place to cool off from this absurd reply.

jamesinger
03-25-2017, 08:10 PM
I thought this thread would garner more interest because of ACC and Lane Assist becoming more of a "standard" feature.

In case anyone is interested in this subject, this article illustrates a lot of the same frustrations I have had with the semi-autonomous features in my Audi.

http://jalopnik.com/car-buyers-just-arent-feeling-all-those-semi-autonomous-1796303252

At this point, I have given up on using ACC in heavier traffic. Brake Guard is another can of worms and I am on the fence of turning it off because it seems to panic a lot when there are cars turning in and out from side streets (especially during city driving in LA), and when people make erratic lane changes, which is very common here in LA. However, I do think ACC is super useful in medium to light traffic when people are not radically speeding up, slowing down, or making wild unsignalled lane changes.

Last, I have a friend with an F80 M3 that feels his driver assists, specifically his Lane Assist, is useless. I would agree after having his car for a few days but I do like the blind spot warning, which is also a great feature on my Audi. However, similar to Audis, his other semi-autonomous features are annoying in most cases and seem to react counterintuitively to me in heavier traffic particularly.

At this point, I only use the driver's assists on longer freeway drives for the ACC but I am still divided on Brake Guard.