Author Topic: Road departure mitigation - is it rubbish?  (Read 11873 times)

CB72

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Re: Road departure mitigation - is it rubbish?
« Reply #15 on: February 09, 2026, 02:15:25 PM »




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!  :P
[/quote]

Where's all the cyclists?
« Last Edit: February 09, 2026, 02:17:10 PM by CB72 »

Sean Regan

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Re: Road departure mitigation - is it rubbish?
« Reply #16 on: February 09, 2026, 03:09:37 PM »
I have a 23reg Crosstar.

I've never needed  "physical assistance" to drive any car.
It's a bit of a pain to have to disable it every time I start the car, but that's 'elf n' safety for you.
"The information's out there, you only have to let it in." (Jesse Stone)

Kremmen

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Re: Road departure mitigation - is it rubbish?
« Reply #17 on: February 09, 2026, 03:43:35 PM »
Agree, me neither

If I felt I wasn't fit to drive without assistance I'd stop driving ........ oh, I did, but not for that reason  ;)
Let's be careful out there !

Hicardo

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Re: Road departure mitigation - is it rubbish?
« Reply #18 on: February 09, 2026, 07:00:33 PM »
I always turn it off every drive.  Round where we live are lots of narrow lanes and it literally goes of pointlessly all the time. So for me, an annoyance, but one i can disable in about 8 seconds.  Still, i would prefer just one straightforward button that i can turn it off with.   ;)

richardfrost

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Re: Road departure mitigation - is it rubbish?
« Reply #19 on: February 12, 2026, 05:25:30 PM »
I always turn it off every drive.  Round where we live are lots of narrow lanes and it literally goes of pointlessly all the time. So for me, an annoyance, but one i can disable in about 8 seconds.  Still, i would prefer just one straightforward button that i can turn it off with.   ;)

Renault and Dacia vehicles have that button.

I'm intrigued by the narrow lanes though. Do they have white lines at the edges that the RDMS is detecting? Where I live there are no white lines on our narrow lanes.

Lord Voltermore

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Re: Road departure mitigation - is it rubbish?
« Reply #20 on: February 13, 2026, 03:13:29 PM »

I'm intrigued by the narrow lanes though. Do they have white lines at the edges that the RDMS is detecting? Where I live there are no white lines on our narrow lanes.
It can detect  green grass,and dirt etc  road margins  but possibly white sidelines will be detected sooner and cause 'wobbles' while you are still a safe  enough distance from the rough stuff. 

At the risk of upsetting , or enraging ,some readers, I will repeat my opinions on this.(other opinions are available  ;D) Its a bit like war and peace. Stop reading now if you are short of time. :-[

I seldom get any RDMS interventions  on my 2024 car even when driving at quite high speed ,only a few millimeters away from the rough verges.  Whether this is  in the centre of a narrow single track road  (until confronted with something coming the other way) or positioned in the middle of 'my' side of the road  when the road is wide enough to have a centre line and  you can usually (but not always)  safely pass oncoming vehicles without risk of clashing mirrors. etc 

There appears to be a setting (on later cars at least)  where intervention is minimal ,even if you dont actively try to avoid rdms interventions  by adapting your driving .IMO this should be the setting you use, NOT just switching it off every trip. 

I accept that on earlier cars the RDMS can be a bit more intrusive. It took me  a while to get used to steering twitches etc on my 2021 car.  This improved significantly   when the car had a free Software update. IIRC you had to book an appointment to have this done, or specially book a longer time slot to include it with a service.  So its possible some cars have never been updated, especially if their owners habitually switch  RDMS every trip.  These  might continue to do so when they buy a  'facelift' car without ever giving the improved driver aids systems a second chance to impress or make a second attempt at learning to work in harmony with it.  ;)

As coldstart said in the recent post about ACC  adapting to using driver aids can actually improve your driving. 

Many  say  they have been driving many years without ever needing the help of driver aid and resent it now. .    But with all due respect  many years of driving does not mean you have reached the pinnacle of competence. We all make mistakes, get into bad habits , deteriorate in some areas.   Every driver canl learn from active criticism, whether its  from a respected advanced driving instructor , 'back seat driver', or the sometimes imperfect driver aid Gizmo . My own worst critic is me.  The biggest benefit of some advanced driving lessons was learning I wasnt as good a driver as I thought I was.  No one is. 

With early cars  there were several posts to the effect "rdms threw me into the path of a tractor" etc.
Sorry if this upsets you but those who believe RDMS is dangerous should  maybe  take a long hard think about their own  driving.  Could it be they are driving too fast for that road , reacting too late to hazards,  being slow to react to any steering twitches.  (IF so they may also  react too slowly to a genuine  skid on ice, mud, loose gravel etc  - I find the occasional  rdms twitch 'keeps me on my toes' ) It may be you are genuinely in control of cutting a corner, avoiding an oncoming vehicle by gliding onto the verge etc, but 'Gismo' doesnt know that, and   your passenger might be terrified by it ,  but too polite to  say so.  Advanced drivers  normally have raised awareness of how their driving affects , passengers, other road users etc. Just include Gizmo in this.   If the result of this analysis is 'I'm always  good, RDMS is always bad ' then maybe you are right. Good luck.    Personally I'd rather drive at a speed and active  positioning that remains Gizmo friendly .

But for those who have concerns about high tech drivers aid please dont let it put you off progressing to a mk4.  Other brands of newer cars have similar systems.   It is possible to drive without fully embracing the systems,  or take your time to learn them.    Mrs LV comes into this catagory. She switches nothing off , but seldom switches on optional stuff during her local trips. (eg brake hold, acc etc)  but very quickly learned to accept  and expect RDMS twitches  "yes it always happens when I cross lanes at the traffic lights by Tesco' etc. No big deal
My IQ test came back negative

Hicardo

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Re: Road departure mitigation - is it rubbish?
« Reply #21 on: February 14, 2026, 12:00:39 PM »
LV, what settings do you have on your car for RDMS?

I accept your argument, and will try to see if your settings work in my driving.  I don't believe i have altered anything with relation to RDMS since the car was new.  I do remember it being OK on the main roads, but not on the narrow roads.  So i have turned it off ever since those early attempts to live with it, for me, failed. 

The sales guy said he drove a works car same model for a couple weeks and was not bothered by interventions, and he lives not far from me, so in theory it should be fine. 

Anyway, please let me know.  Cheers!  :)

Hicardo

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Re: Road departure mitigation - is it rubbish?
« Reply #22 on: February 14, 2026, 12:07:09 PM »
Richard, there are no white lines on our local lanes either at the side or centre

Lord Voltermore

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Re: Road departure mitigation - is it rubbish?
« Reply #23 on: February 14, 2026, 02:21:07 PM »
Hicardo.  Mine is set on 'delayed'  which may explain why its  less intrusive . With a choice of Early, Normal, and Delayed  its surprising that the factory  default setting  is 'Delayed' rather than 'Normal'. Maybe Honda get fewer complaints   ;)   

I cant remember what setting I used on my 2021 car. ' Delayed' sounds  counter productive to a safety intervention system  so I might not even have tried that setting.. Maybe this alone accounts for much of the apparent improvement in the 2024 car's system.
 
I will experiment using all three settings to see which is the best compromise for me, and Mrs LV.  ;)   Must remember to warn her if I unexpectedly  increase its effect. 

Must  admit  I didnt know which setting I was on and had to read the manual to find out how to check.    :-[   Finding this in the manual made me realise  there is still a lot of stuff (some of it new)  that I didnt learn properly or  have already  forgotten . Must read it again , maybe several times  ;D

 
« Last Edit: February 15, 2026, 09:43:18 AM by Lord Voltermore »
My IQ test came back negative

Hicardo

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Re: Road departure mitigation - is it rubbish?
« Reply #24 on: February 15, 2026, 09:50:58 PM »
Thanks LV.  Ive changed my setting from Normal to Delayed on RDMS, so let's see what happens!  Will report back in due course...... ;D.   

coldstart

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Re: Road departure mitigation - is it rubbish?
« Reply #25 on: February 17, 2026, 09:11:03 PM »
... With a choice of Early, Normal, and Delayed  its surprising that the factory  default setting  is 'Delayed' rather than 'Normal'. Maybe Honda get fewer complaints   ;)   

My understanding is that Honda somewhen changed the default to "delayed" (probably with the 2023 facelift because that's the default setting on my MY24 Jazz bought August 2023 as well)

Jazzik

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Re: Road departure mitigation - is it rubbish?
« Reply #26 on: February 17, 2026, 11:46:30 PM »
No, our 2021 had (and has) delayed as default setting, also in the manual!
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jonhd

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Re: Road departure mitigation - is it rubbish?
« Reply #27 on: Today at 02:35:08 PM »
No, our 2021 had (and has) delayed as default setting, also in the manual!

Interesting! My 2021 Crosstar was set to 'Normal'. I've just changed it to 'Delayed', as a trial.
One previous owner - I did a Factory Reset when I took ownership. (Agree that the manual shows 'Delayed' as default.)

Jazzik

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Downsizer

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Re: Road departure mitigation - is it rubbish?
« Reply #29 on: Today at 06:15:28 PM »
The same information is on p 309 of the current manual.

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