RDMS and winter

[Neil Ives]

On the Honda website, if you go into the Jazz section and then click on Reevoo for owners comments/ratings there are many people saying they have issues with RDMS.

https://www.honda.co.uk/cars/new/jazz-hybrid/overview.html

I found a link to customer reviews but the connection doesn't work.

[Kremmen]

From the link, just scroll down a short way to see the "Reevoo, Read 1.037 Reviews"

If clicking that doesn't work then you may have popups blocked.

[Jazzik]

On the Honda website, if you go into the Jazz section and then click on Reevoo for owners comments/ratings there are many people saying they have issues with RDMS.

https://www.honda.co.uk/cars/new/jazz-hybrid/overview.html

Indeed... but like here on this forum you can read very mixed opinions:

- Suzanne, 12 July 2021 "Like the safety features".

- Janet, 11 July 2021 "1. Didn't like the safety feature that moves the steering wheel from the side.  Our lanes are too narrow and I felt i was being pushed into the path of the oncoming car."
2.  You have made the car wider.  dangerous for our narrow lanes.

- James, 9 July 2021 "The road safety features such as lane assist etc make you feel safer when driving".

- RICHARD, 30 June 2021 "steering warnings don't take account of poor road conditions. Its disconcerting when steering momently tightens."

- David, 30 June 2021 "Equipment level including technology driver assists is first class."

- Alan,  28 June 2021 "Lane keep assist stays off far to long if you go over white line or near edge of road which sometimes it is Inevitable. Worse on narrow roads."

And so on, and so on...
It is clear that the negative comments about RDMS almost all (or all?) have to do with road conditions (our lanes are too narrow).
Now I could of course repeat: Don't blame the equipment for the quality of your roads, but I won't...
It is not without reason that Honda indicates in the manual where and when the safety devices do or do not work reliably and how to switch them on or off.
And mind you. If your daily drive is narrow country lanes: it takes not even 10 seconds to switch RDMS off at the (every) start. LKAS only works if you turn it on yourself.

[Jazzik]

Our previous car was a Toyota Yaris Hybrid. When we planned to replace this Yaris, there were two options: the new Yaris Hybrid and the Jazz.
We read here about problems with (certain parts of) "Honda Sensing" the Jazz's driver assistance systems. Don't think these kinds of complaints only exist about the Jazz.
On the Dutch "Toyota Hybride Forum"  https://www.toyotahybrideforum.nl/index.php  under topic "Are driver assistance systems safe?" You will find the following summary (I will try to give an adequate translation):


DRCC (Dynamic Radar Cruise Control) often brakes much harder than the predecessor slows down and this could cause a rear-end collision. There is also no limit to resuming the last set speed after the predecessor disappears from view.
There should be a difference between predecessors that take a turn and those that go faster.
A full range system is less safe than a system that only at a speed of e.g. 30 or 40 km can be switched on.
Especially at intersections or roundabouts, acceleration to the last set speed is not desirable when the vehicle in front leaves the intersection or roundabout.

LTA (Lane Tracing Assist) steers towards the center of the road in some cases when this is not desired, such as crossing bicycle lanes on narrow roads when an oncoming vehicle is approaching or at a road narrowing and also with incorrect markings on roads under construction. The system cannot be switched off at the moment and that is not pleasant in the situations mentioned. It is also being examined whether the LTA can be made switchable or whether the software can be made smarter. Such as the recognition of certain types of markings to which the LTA does or does not actively respond.

LCA (Lane Centering Assist) is a system that gives up at the slightest, so sometimes it makes and sometimes doesn't make steering corrections to keep the car in the center of the lane.


Toyota LTA = our RDMS.

All this does not make the Jazz any better or worse, but at least the feeling that we are not alone might give some comfort...

[sportse]

Thanks Jazzik, that’s awful that you can’t even turn the Yaris system off!

I was going to get a new Yaris initially, having owned a couple of Toyota hybrids before, but didn’t as Toyota is still sticking their catalytic converters out the underneath of their cars where they are easy to steal.

[Kremmen]

I think this is the theme of new cars thanks to EU NCAP.

I haven't checked but as part of the NCAP rating some systems may have to be enabled by default. Whilst we would like the option to turn them off permanently, that assumes that there is just one driver.

A car with multiple drivers, each knows what the default position is and can adjust each 'system' as required.

So we've now heard about BMW and Toyota also with dissatisfied owners.

[culzean]

An amusing article in our local paper, the person who writes a regular column says his car has speed limit recognition feature and he has had some odd speeds shown up on his dashboard display, picked up from extraneous signs,  but the oddest was when it showed speed limit as 90, he had been following lorry with 90km/h sign on the back.

Another amusing story about a woman wearing a T shirt with 'KNITTER' on it,  she walked across a bridge in Bath and strayed into bus lane, where the CCTV / ANPR system snapped her, a bemused van driver in Dorking with the registration KN19TER got a surprise fine through the post. 

These systems are not even BETA,  maybe just climbed out of the 'omega' category at best.

[peteo48]

The speed limiter shortcomings are why I wouldn't even attempt to use this feature. It often picks up signs near but not actually on the road and sometimes, if the signs are obscured in some way, it will show no speed limit where there is one. Useless but I gather all cars with this system are the same.

[Kremmen]

I'm successfully using the LIM function to stop me straying above the M4 smart motorway average speed limit Specs but I agree trying to use the Intelligent Limiter sounds like a disaster waiting to happen.

[peteo48]

Yes - should have made clear - it's the intelligent speed limiter that is the problem.

[R2D3]

Excellent. Thanks for this Kremmen. I will definitely give this a go.

I think I need a "fiddling about" session with the car stationary. I must say the user guide they give you with the car is useless but I have accessed the on-line version.

Just to see if I am alone in my incompetence I googled the topic of "being overwhelmed by tech in new cars" and a gratifyingly large number of entries appeared. BMW dealerships allowing 2 to 3 hours to "explain" the car (this was Australia) and people even coming back for refresher courses!

It also seems to be the case that a large number of people do not use much of the technology on board a modern car.

The handover of my BMW X1 was about 15 minutes and centred mainly around the opening and closing of the bonnet - the dealer didn't know that the release handle had to be pulled twice to free the bonnet (and I had to look it up in the manual) and closing it was another issue.  The manual said to hold bonnet approx 2 feet off closed position and release.  Much hilarity ensured as the bonnet is held by gas struts, so when released it opened fully!!

[PaulC]

There are all these automated smarts for doing things like ensuring the Jazz is kept in the centre of a lane and that it does not veer off a road.
Which of them will get temporarily suspended/switched off when the indicator stalk is used to signal that the car is turning right or left or is going to change lanes?

[sportse]

There are all these automated smarts for doing things like ensuring the Jazz is kept in the centre of a lane and that it does not veer off a road.
Which of them will get temporarily suspended/switched off when the indicator stalk is used to signal that the car is turning right or left or is going to change lanes?

Unfortunately you won’t be indicating on a straight road

While it’s ok on clean motorways/etc with no marks on the road other than clearly defined lanes when you would be indicating to cross them…

On narrow country roads, RDMS goes crazy and thinks you are constantly going to crash!

And that’s happened to me regularly too on roads with no traffic coming where you are driving on your side of the perfectly wide 2 lane road.

[Kremmen]

Fully agree.

On paper RDMS sounds safe but in practice it's just plain annoying and potentially dangerous going by posts here.

[culzean]

Fully agree.

On paper RDMS sounds safe but in practice it's just plain annoying and potentially dangerous going by posts here.

imagine how unsafe a self driving vehicle would be, unless every road in the country was changed and kept in perfect order, with no tar banding allowed etc.