Road departure mitigation - is it rubbish?

[cardriver29]

First month of ownership. 2024 Jazz Hybrid Advance.

When I test drove the car the RDM was set to delayed by the dealership.

Didn't really give it much thought. It never flagged anything during my test run on large and well marked roads near the dealership.

I thought I'd give it a try with "Early" and "Normal" setting.

Both seem to flag the white steering wheel icon several times a minute and I swear I'm driving straight down the middle. Even giving little unneccessary jolts to the steering wheel.

If I set to "delayed" at least the white steering wheel alert is less prominent.

But on the other hand I can cross the white line and drive in the middle of the road for 10 seconds and never see the amber steering wheel icon.

I just can't find any setting where it seem to be acurately reporting what's going on.

Is the RDM system on a Jazz just rubbish and best set to "delayed" to stop it moaning.

Or is there something wrong with mine?

[Marco1979]

It depends also on the speed you are travelling at! You can cross a white line slowly without any issue, but faster (do not know the exact number) does cause warnings.
I think it is actually equal to or better than the systems most French or German cars currently have.

[Kremmen]

I used to turn it off every journey

[Nicksey]

I find it ok, doesn't bother me unduly. It was a bit of a shock when first week of ownership and the few times it 'jerked' the steering wheel.. but nothing to worry about now. It does what it does.. but just another gimmick really.

[Lord Voltermore]

It a bit of a marmite question. Some  like RDMS  , others dont. 

I have no issues with the RDMS in my 2024 car.  Maybe it has always been at the right setting for me.  I have never checked. (If it aint bust I dont fiddle   )

I regard RDMS as a system that might warn or intervene if it appears I am unintentionally departing  off the side of the road.  If I intentionally let the car drift over towards the edge of the road, or cross a line etc I have learned to expect  it might give a warning or steering intervention. How else does it know I am not asleep?    But it is smart. It can detect even the slightest steering intervention  or use of brakes or indicators  and  'knows' I am still in control and intend what is happening.  If  I stubbornly continue driving along the centre of the road,straddling the centre line   it accepts that.
 There are many situations where the safest place to position the car  is in the middle of the road rather than  inconspicuously  skulking along the gutter  almost  hidden in the hedge. You have a better view ahead ,can see further round some bends ,can  avoid car doors opening or things suddenly emerging from hidden, junctions gateways, gaps in the hedge etc. And other road users are likely to see you sooner.   

[Kremmen]

I'm just OCD with RDMS

I passed my advanced driving test in 1983 and I continued to adopt it's teachings throughout my driving

I know when it is safe and provides a smoother journey to slightly cut some corners. I know when not to indicate because there is either no one else around or it would be misleading

So, when I got the orange warning and wheel wobbling telling me never to drift over a white line I decided to turn it off every journey

No big deal, only took seconds once I learned the 3 presses

[stani]

To all contributions: well, it would be best if the driver himself decided whether he wanted these assistants to be permanently or temporarily turned on or off.

[Downsizer]

I regard it primarily as a safeguard against me losing concentration, which I’m sure we’ve all done on occasions on long journeys. There continue to be accidents where there is no other explanation, however good the driver.

[CB72]

It happens to me on a regular journey, I have to cross the line to avoid parked cars, the steering wheel tugs me towards the parked cars so I tug back to avoid an accident

[Jazzik]

...the steering wheel tugs me towards the parked cars so I tug back to avoid an accident

No accidents, so you've always won with RDMS so far?

Knowing how it works, it doesn't really surprise me and it doesn't bother me either.

[tfw7]

I dislike it intensely. I drive on rural roads where it thinks I'm driving into a hedge.
It is part of my start up routine to turn it off every journey.

[Jazzik]

...where it thinks...

I don't think it 'thinks', but as Lord V wrote:

But it is smart. It can detect even the slightest steering intervention  or use of brakes or indicators  and  'knows' I am still in control and intend what is happening.  If  I stubbornly continue driving along the centre of the road,straddling the centre line   it accepts that.

In the Netherlands, on roads like this with these famous bicycle lanes(?) strips(?), RDMS goes crazy. But in my experience, it gives up after you ignored it three times and than leaves you in peace for a few minutes. Unfortunately, RDMS then comes back to life, and the process repeats itself.
It might be annoying, but you get used to it! 

[Mr Onion]

Totally useless, dangerous and should be banned.

End Of

[Jazzik]

Totally useless, dangerous and should be banned.

End Of

You mean roads like the Dutch ones shown above?   
Maybe you're right, ban them!

[Bristol_Crosstar]

I think the RDMS has improved on the more recent Advance models, it rarely intervenes now unless I'm drifting off course, it's a useful thing to have if you're tired and concentration isn't at 100%.