Dynamic Radar Cruise Control on 2022 Prius: Problem

and nhtsa as well

 

I'm in a rented 2022 Camry this week and it does the same thing.

And I love it!

I'll admit it surprised me the first time, but I thought it was graceful and intuitive.

Satan will be in treatment for frostbite before I try to pass on the right. It's an unnecessary safety risk and I'm completely OK with this feature being incompatible with bad driving habits.

 

For comparison, if perhaps the 2022 version is different from my 2021, my DRCC with full-speed range will accelerate upon signaling into the left lane. but if I will be following a vehicle already in the left lane it will immediately slow down to maintain the preset following distance. I'm not sure but I think the acceleration only begins when I execute the lane change. I'll check it next week if I can (and remember). The following distance is active all the time and enforced regardless of lane changes, which I have found out in a panic stop sort of way when someone ahead of me suddenly slows to make a right turn. I also really like using this system. It maintains a strict safety envelope so I can concentrate on other aspects of the drive.

 

First of all, the DRCC uses not just the radar under the emblem, it also uses the camera, and the sensors for blind spot and the others around the car are all still active.
Second, your owners manual warns that we should NEVER rely on the system to think for us, because it won’t.
Third, I have yet to have mine behave the way you describe, and have been in traffic situations just as you describe, and have had the system disengage itself (just as the manual says it will). But then again, perhaps it didn’t disengage so much as the driver was aware of his surroundings and responded accordingly.
There is plenty of information available on how these systems ACTUALLY operate and it is well worth our time to learn about them.
Third, the more you take the time to learn about them, the more you will learn just how little most dealerships know about them.
Fourth, these systems and the cars were not produced in a vacuum. Believe it or not they actually underwent extremely involved testing in real world situations.

 

Y'all who have actually observed this behavior should report it to
the NHTSA and the NTSB.
It is a safety hazzard.......and there is no GOOD reason for it to work that way.

 

Assuming it actually IS working that way, of course.

 

I can see how that could be an issue.
Properly, in heavy traffic, if someone wants to change lanes, they turn on their turn signals, and wait for an opening, often by another vehicle, allowing them into that lane.


With the above said, I realized that I have not noticed that issue - at least not yet.
There could be a few reasons for that
1) I have a 2022 Prius Prime Limited, with TSS 2.0 and "Blind Spot Monitor with Rear Cross-Traffic Alert".
Imho, the Blind Spot Monitor (BSM) works very nicely on my car. I love it - Two Thumbs Up!

2) When I'm using Cruise Control, I'm often more relaxed mode, and I'm not in a "big rush" to get some where.
Imho, if I'm in a rush, then cruise control is the wrong thing to use.


Fwiw...
3a) I also always have my DRCC set for max distance. That way, I don't stress as much, when there's sudden braking.

3b) Unlike many Tesla drivers that fully depend on "auto-magic-megaAI-cruise" or what-ever, I'm more aware of the limitations of these types of systems.
I also got a Limited, specifically since it has a Head Up Display.
Fwiw, even the fraction of a second that it takes to look down at the dash for the speed, results in many feet of travel at high way speeds.
At 65MPH, a vehicle travels over 93 feet each second.

Code:

https://www.google.com/search?q=convert+65+miles+per+hour+to+feet+per+second 

Btw, an easy walking speed is about 20mins per mile. Or, 3MPH.
At an easy walking speed of 20mins/mile, that is still 4.4 feet per second.

Code:

https://www.google.com/search?q=convert+20+mins+per+mile+to+feet+per+second 

3c) Fwiw, there is no way I would trust any automated system in traffic that has "very rapid, very hard braking".
In other words, common NYC and Boston rush hour traffic.

3d) It should also go without saying, that none of these system do very well, or even work at all, in many rain, snow, fog, etc conditions.

 

WOW!!!!!!! It is nice to know that there are other intelligent drivers out there!!!!
OH WAIT! I just noticed the UK. Well, I was hoping you were in the states, but now the surprise at the iq level is less surprising

 

THAT’S THE DEFECT!!!!!! Toyota forgot to install that sign on the DASHBOARD!!!!!!

 

Well I don't think I tried using it in circumstances where someone was passing me, so I didn't happen to experience that effect.

I'll never claim perfection but I try to avoid the 3-way combination of passing someone with cruise control active and other peoples' passing maneuvers. Just too busy. In those situations I'll rely on the radar cruise to slow me down to chill out behind somebody else for a while or I'll take full control and drive for a minute.

In any case I survived the week in the rental and made it home to my own cars unscathed.

 

the throttle should never be activated by the turn signal without using other nanny tech to detect the carnotchanging lanes with car in front and car on side

 

I have used this system repeatedly in heavy traffic and have never experienced this issue, in fact I have actually had the system reduce speed when someone passes me on the left and is a little too close to me. Hard to see how the problem you describe could occur in my Prius.

 

Sounds like “responsible driving” to me. I bet you don’t have the overwhelming desire to text while you’re driving either!

 

I like automatic driving aids, but they have to be helping me. The moment I'm doing something to accommodate them comes slightly after the point where I should have turned them off and just done it all myself.

I've long accepted the idea that the technology only helps sometimes, and that I still have to drive. No points deducted for failing to use cruise door-to-door.

 

Page 326 of the 2022 manual:
“When the turn signal lever is operated and your vehicle moves to an over- taking lane while driving at 50 mph (80 km/h) or more, the vehicle will accelerate to help to overtake a passing vehicle.”
Page 336 of the 2022 manual:

“■Conditions under which the vehicle-to-vehicle distance control mode may not function correctly
In the case of the following conditions, operate the brake pedal (or accelera- tor pedal, depending on the situation) as necessary.
As the sensor may not be able to correctly detect vehicles ahead, the system may not operate properly……
●When steering wheel operation or your position in the lane is unstable”

apparently this problem occurs when some “mysterious” force moves the steering wheel to cause the car to move into another lane. .