General > General Technical Chat

The Glorious Return of a Humble Car Feature

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Stray Electron:

--- Quote from: nctnico on April 29, 2023, 06:29:18 pm ---
--- Quote from: Stray Electron on April 29, 2023, 04:30:35 pm ---
--- Quote from: Ed.Kloonk on April 29, 2023, 05:01:49 am ---
--- Quote from: Halcyon on April 29, 2023, 04:10:35 am ---
--- Quote from: wilfred on April 28, 2023, 01:57:26 pm ---I particularly don't like headlights that cost a thousand dollars to repair/replace when I can just buy a bulb for  $50. It makes insurance premiums that much higher too when even a minor accident can irreparably damage one.

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As someone who was "recently" involved in a crash in a European car (someone hit me up the rear at 40-50 km/hr), I can attest to the pain of trying to get parts from overseas.

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No excuse not to have at least 3rd party insurance in this day and age.

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   Keep this in mind, OVER 50% of the drivers in Florida have NO insurance despite the fact that it's been required by the state since about 1969.

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That says more about Florida than the drivers. Over here you'll automatically receive a fine for not having a car insurance. These fines are quite hefty as well.

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   They'll fine you for not having insurance in Florida too.  But not if you're an illegal and you disappear back into the woodwork.  Ask me how I know!  The biggest problem in Florida isn't this state, it's the fact that SO MANY people here are from out of the state or out of the country and they can just vamoose when they get in trouble with the law. The state isn't going to try and extradite them back to Florida for a traffic offense so once they're gone, that's the end of it.  That was huge problem with people from other states;  even before illegals started pouring in by the millions.

Stray Electron:

--- Quote from: tom66 on April 29, 2023, 07:19:59 pm ---
--- Quote from: coppice on April 29, 2023, 06:51:55 pm ---I'm very happy having most things on the dashboard accessed by a touch screen, but who thought it was a good idea to make all the controls on the steering wheel touch?

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I thought the same about my car, but the haptic feedback function and the fact that you can map things based on touch pressure makes it a net win.  For instance, the adaptive cruise control - a firm press is +/-5mph, and a light press (quite distinct in force) is +/-1mph.

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  Sheesh, and on my cars I have to tap the (real) button five times, or hold it down for a count of five, to change the speed by 5 MPH.  I feel so dated!    ;D

coppice:

--- Quote from: tom66 on April 29, 2023, 07:19:59 pm ---
--- Quote from: coppice on April 29, 2023, 06:51:55 pm ---I'm very happy having most things on the dashboard accessed by a touch screen, but who thought it was a good idea to make all the controls on the steering wheel touch?

--- End quote ---

I thought the same about my car, but the haptic feedback function and the fact that you can map things based on touch pressure makes it a net win.  For instance, the adaptive cruise control - a firm press is +/-5mph, and a light press (quite distinct in force) is +/-1mph.

The button also vibrates such that it pretty much feels real - you can just about tell it's not a real button but the effect is close enough to fool you into thinking you've pressed 'something'.

I guess a major benefit to this is that they don't have to design safety-critical multiple-redundant switches for things like ACC any more.  You must be able to turn off ACC with a single button press (some people forget the brake does this too), which means that you need a doubly redundant switch and that needs to be reliable for the 'life' of the car.  So even though you need a haptic actuator with the captouch solution, you probably save money overall.

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If you have ACC why would you want to set the target speed in 1MPH increments? Do you have some 33MPH speed limits you need to match? My Volvo just sets the car's speed at the time you enable ACC, and moves from there to rounded 5MPH steps on the buttons.

How are you going to match the reliability of a redundant physical switch with something as flaky as capacitive touch controls?

Stray Electron:
 Actually some jurisdictions in the US do have odd speed limits such as 27 MPH.  They do it because they think people will take more notice of the odd amount and will more of an effort to stay below the limit. 

  OTOH a lot of people like to bump their speed up a few MPH more that the legal limit since the police (in Florida anyway) usually won't stop you unless you're doing at least 5 MPH over the legal limit.  But don't try that in Virginia!! They absolutely will stop you, even for 1 MPH over.  Yes, been there done that, and have the ticket to show for it :(

tom66:

--- Quote from: coppice on April 29, 2023, 08:08:57 pm ---If you have ACC why would you want to set the target speed in 1MPH increments? Do you have some 33MPH speed limits you need to match? My Volvo just sets the car's speed at the time you enable ACC, and moves from there to rounded 5MPH steps on the buttons.

How are you going to match the reliability of a redundant physical switch with something as flaky as capacitive touch controls?

--- End quote ---

I won't comment further for risk of incriminating myself  ;D, but maybe the limit could be considered, as a friend of mine declares "speed limit plus some VAT", so the 1mph adjustment is helpful to set an ideal speed.

I can easily see why a captouch button would be more reliable than a physical switch.  There's no possibility of moisture or dirt getting in or behind the button (that's happened on my previous car that has physical button for ACC, I had to take it off and clean it).  The captouch buttons could continuously calibrate themselves to the 'no press' condition so they can handle dirt etc. building up on the switch area.  Given the safety-critical nature of controls like this, I am certain the manufacturer has taken a decent amount of effort to ensure they are safe and operable for a very long time.

This car also has the option to set the speed limit to the detected road limit, and decelerates automatically to match a new limit.  Very clever... a little too clever!

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