Dynamic Cruise - acceleration and stopping

[dzcruiser21]

I drive on a tough highway, I-95 in a busy city that during rush hour can have frequent stops. I use the DRCC quite frequently, but I tend to notice that if the traffic up ahead stops dead, the DRCC doesn’t necessarily slow down and see it and stop, but I typically step in manually. Anyone know if this will actually stop if I were to rely on the system? Like I assume it will slam on the breaks, but I don’t want that to be when it’s too late.

Any thoughts around DRCC in this situation?

Also - I use 3 car lengths and the lowest acceleration. Found that to be the best for me, hoped it would help with the stopping issue above, but not necessarily.

 

[EOD Guy]

I've never been brave enough to try.......... I've always chickened out.......LOL

 

[gvan1998]

Tried it, it will stop but the computer will slam on the brakes.

 

[KurtW]

Engage it once you come to a complete stop and it seems to work well for me

 

[JustinHEMI]

Tried it, it will stop but the computer will slam on the brakes.

This. It's a terrible driver.

 

[ferrari1898]

I have used the dynamic cruise control and it does good with normal traffic. Depending on the section and time of I95 other drivers may feel Toyota has too large of a gap between you and the next vehicle. with normal traffic the Toyota slows down to about 10-20mph and then beeps at you. At this point I have applied the brakes, I do not want to bet the computer will intervene at this point and be wrong.

If someone was to brake check you, the system seems to be pretty responsive. Again, at lower speeds I am not 100% certain how things will fair.

In comparison the Honda system is rubbish. I had daily false alarms with the system getting confused. So the Toyota is MUCH better.

We have also had Subaru Eyesight and IMO their system is better. Mainly that I could set the cruise in Atlanta traffic and the Outback would go from 90mph to 0mph without any intervention and then when the traffic started to move I just tap the resume button.

 

[neema2k]

my experience with LC adaptive cruise on the highway is what you said about the Outback except that after going from 90 to a stop, the cruise would resume on its own without any intervention and crawl back to 90.
I was driving what is usually a 3 hour drive but it was the weekend after thanksgiving and it was a 5 hour drive then and this exact feature made the drive actually pretty nice.

On slow drives. I've tried it in the school zone dropping off the kids and it's nice. But when it stops there's a sudden acceleration to 20 MPH and I know 20 is a low speed but with kids running around everywhere that sudden acceleration could be jarring.

Let me know if you know of a way to adjust the acceleration. I've only had this car for a month.

 

[ferrari1898]

my experience with LC adaptive cruise on the highway is what you said about the Outback except that after going from 90 to a stop, the cruise would resume on its own without any intervention and crawl back to 90.
I was driving what is usually a 3 hour drive but it was the weekend after thanksgiving and it was a 5 hour drive then and this exact feature made the drive actually pretty nice.

On slow drives. I've tried it in the school zone dropping off the kids and it's nice. But when it stops there's a sudden acceleration to 20 MPH and I know 20 is a low speed but with kids running around everywhere that sudden acceleration could be jarring.

Let me know if you know of a way to adjust the acceleration. I've only had this car for a month.

I have had the cruise reduce and then resume speed fine. I think Subaru handles lane changes better, but Toyota does well. If I am on the interstate and the vehicle in front of me STOPS, the Toyota slows down but as we get into the 15mph range I get beeping and seems like the cruise disables itself (not 100% if it will intervene or not), which is sad since the Toyota tracks the vehicle in front pretty well.

In comparison the Subaru will go from 90mph to a dead stop (no beeping) and if the traffic starts moving again in like 5-10 seconds the Subaru will apply the gas. After 5-10 seconds of being stationary you have to re-engage the active cruise.

Toyota seems to me like at low speeds the cruise disables itself. I would think the active breaking would apply IF needed. But in comparison the Subaru cruise will completely stop and resume without fuss.

 

[Markarian421]

I have had the cruise reduce and then resume speed fine. I think Subaru handles lane changes better, but Toyota does well. If I am on the interstate and the vehicle in front of me STOPS, the Toyota slows down but as we get into the 15mph range I get beeping and seems like the cruise disables itself (not 100% if it will intervene or not), which is sad since the Toyota tracks the vehicle in front pretty well.

In comparison the Subaru will go from 90mph to a dead stop (no beeping) and if the traffic starts moving again in like 5-10 seconds the Subaru will apply the gas. After 5-10 seconds of being stationary you have to re-engage the active cruise.

Toyota seems to me like at low speeds the cruise disables itself. I would think the active breaking would apply IF needed. But in comparison the Subaru cruise will completely stop and resume without fuss.

The Land Cruiser has a separate system for stop and go traffic, which puzzles me. Especially if it has this awkward of a transition. Our Volvo will go from highway speeds to stop and go traffic smoothly. I haven't needed it yet on the Land Cruiser and don't have any idea how to activate it (I need to check the manual). I know it won't activate if you have the driver attention monitor shut off (I guess because it's hands free).

 

[Thx_1158]

The Land Cruiser has a separate system for stop and go traffic, which puzzles me. Especially if it has this awkward of a transition. Our Volvo will go from highway speeds to stop and go traffic smoothly. I haven't needed it yet on the Land Cruiser and don't have any idea how to activate it (I need to check the manual). I know it won't activate if you have the driver attention monitor shut off (I guess because it's hands free).

I've tried "Traffic Jam Assist". I thought it worked quite well and you can remove your hands from the wheel for a short time before it yells at you....LOL

 

[EOD Guy]

If you have the features engaged and use the blinker, the vehicle will changes lanes all by it's self. I'm too chicken to try it in heavy traffic but on the interstate it works well.

 

[ferrari1898]

If you have the features engaged and use the blinker, the vehicle will changes lanes all by it's self. I'm too chicken to try it in heavy traffic but on the interstate it works well.

I thought I tried that on the drive home from the dealer (bought in GA and we live in SC) and it did not work, but I am not 100% I had all the systems on correctly.

And it may be a while before I can test again as The Land Cruiser makes a trip the local elementary school 2 X a day and beyond that most of the miles involve towing the camper, which disables most of the safety systems and cruise control.

 

[bluebullet]

This. It's a terrible driver.

USAA Safe Driver app will report it as hard braking. Can go against your discount if it happens frequently. Nanny state...

 

[RideWithYanu]

I’ve used the systems on highway traffic quite a lot and have nearly full confidence in it. I keep it at the max following distance, and the system has no trouble going from 75mph to full stop with sudden traffic stops ahead. The system is much more jarring when using a shorting following distance…just as it is when you’re driving without it. 99% of drivers are driving insanely close to each other.

The Traffic Jam Assist, which engages when traffic goes below 25 mph, is superb. You can drive completely hands and pedal-free. Again, it’s a more comfortable ride when you set following distance to max.

Edit: I didn’t know that it would change lanes for you with the turn indicator. I’ll have to test that out when I return from travel tomorrow and start a road trip.

 

[ferrari1898]

So from a few of my previous posts I am wrong (it is rare but it does happen).

With active cruise control enabled, the system does come to a complete stop if needed and resumes within reason if the vehicle in front starts to move again. 99% when I am on the interstate with the Toyota, we are towing (so no active cruise control). After playing with it, I think Subaru Eyesight is a tick better but only because when you change lanes around a slow moving vehicle it reacts better. Still the Toyota is really good and MUCH better than what my Honda had.

around town (without cruise control) I have some of the safety systems enabled which creates an acceptable following distance when coasting off the gas. If a light turns read and the vehicles in front slow down, the toyota will apply the brakes (again cruise control not enabled). Around 10-15mph this system seems to stop and make a lot of noise. I suspect if I was to ignore it, eventually the brakes will apply but I do not want to test that theory.