GPS Speedo ?

Discussion in 'Tech/Mech General' started by bjandlin, Mar 3, 2015.

  1. bjandlin

    bjandlin Funster

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    Good morning, I have been wondering about the legality / acceptance of GPS speedos, (not the swimming ones)
    Thinking of registering our MH in UK, thought it might be an easier option than replacing kmh only facia.
    Does anyone have copy of construction & use regs or experience please ?
    Thanks.
    Barrie.
     
  2. pappajohn

    pappajohn Funster Life Member

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    UK speedo must show MPH
    You can use an MPH overlay on your kph dial or simply tippex the corresponding numbers over the existing ones.
     
  3. jollyrodger

    jollyrodger Funster Life Member

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    Imported from Germany through mot with kmh no probs use dighud speed app on android phone or sat nav mph pretty accurate never had a ticket works for me .
    No doubt experts will be along soon :)
     
  4. SandT

    SandT Funster

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    I use an old Satnav placed above the original speedo as I found my speedo pretty inaccurate .

    Works for me. :)

    Terry
     
  5. Barclaybasher

    Barclaybasher Funster

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    My speedo cable broke recently (1991 van - proper cable)

    I will replace cable but will have to remove old one to have new one made, just need the time to do it

    Due for MOT, wondered if a GPS speedo or sat nav would pass MOT

    Speedo is included in MOT since 2012
     
  6. Mr Colpot

    Mr Colpot Funster

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    Not sure as to the legality if stopped but working speedo is not part of the MOT as far as I know, and also some have suggested they (sat nav) are not as accurate when going up or down hill due to the satellite position overhead.
    Having said that I tend to drive but the Sat Nav speed than the Van Speedo - Sat Nav tells me when I am going over the speed limit for the road/motorhome also.
     
  7. Larby

    Larby Funster

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    I use my sat-nav as my speedo when in France, have it read out in KPH
     
  8. Chockswahay

    Chockswahay Funster

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    Really? You would need to be driving down a really really steep hill for it to make any difference :eek:
     
  9. richr

    richr Funster

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    I may be wrong , happens a lot [​IMG] I don't think a gps speedo is accepted as in construction and use regs
    Even if not a mot fail
     
  10. Mr Colpot

    Mr Colpot Funster

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    Thanks - I don't worry about it myself but was only mentioning what I had read elsewhere.
     
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  11. Forestboy

    Forestboy Funster Life Member

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    Use our sat nav as speedo all the time check it against roadside speed indicators and its far more accurate then the speedo.
    Never had mph on our speedo and it passes mot every year.
     
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  12. scotjimland

    scotjimland Funster Life Member

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    Extract from the Department of Transport legislation

    Imperial Speedometer

    Great Britain uses imperial units for speed measurement. The law requires that speedometers must include a miles-per-hour display. Please note in particular that any modified display must be visible in daylight and in darkness.

    Markings may be added to the existing speedometer provided they are:

    • accurate;
    • durable;
    • can be seen clearly in daylight and when the instrument is lit during darkness.

    also

    That a speedometer has been fitted which is capable of indicating speed in both miles per hour and
    kilometres per hour, either simultaneously, or by operation of a switch.
    Note: We can not accept secondary devices, hand written changes or multiple stickers applied to the
    speedometer. We can only accept the changes detailed below.
    The speedometer must be marked up to the maximum speed of the vehicle, with graduations at 1, 2, 5, or
    10mph, and with values at intervals not exceeding 20mph. For this change we can accept the following
    options.
    a) That the factory fitted speedometer is dual marked as standard
    b) The existing (digital) speedometer is, permanently, re-programmed, through a standard feature of the
    vehicle, to display the vehicle speed in mph
    c) A miles per hour speedometer is fitted in-place of the factory fitted unit
    d) A professional, single, miles per hour, overlay is applied directly to the speedometer face plate, not the
    glass front plate (the overlay must be durable and accurate, with markings visible in both day and night
    driving conditions).
    e) A dual marked dial / facia has been added as a replacement to the factory fitted one
     
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  13. John Laidler

    John Laidler Funster

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    I think this from above answers the question: "We can not accept secondary devices"

    A separate GPS speedo would be a secondary device I think.
     
  14. Barclaybasher

    Barclaybasher Funster

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    Doesn't that mean that a replacement GPS speedo would be allowed if say the original did not function
     
  15. Lenny HB

    Lenny HB Funster

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    The rules changed a few years ago 2011 I think, kmh speedo is legal for MOT but not for VCA (Vehicle Certification Authority). When you import a vehicle not you have to get an inspection done by a garage or MOT station and send a letter/invoice with your application form to VCA stating that Speedo Rear Lights & Headlights conform to UK regulations they in return send you a certificate that allows you to register the vehicle.

    Replacement dials available from Lockwood International, be careful in selecting the right one Fiat have several variations for each model, they are quick & easy to change.
     
  16. klaatu

    klaatu Funster

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  17. Borderland

    Borderland Funster

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    The GPS speedo may not work in tunnels because of lack of signal.
     
  18. Borderland

    Borderland Funster

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    I imported a vehicle from Japan and had to have fog light fitted and the speedo converted to read mph. The speedo was an electronic type and the conversion was done using a convertor chip. The letter k on the kmph was blanked out so that it read mph. To get the vehicle registered it only had to pass an mot because it was over 10 years old.
     
  19. Clive

    Clive Funster Life Member

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    My sons speedy was broken on his car when it went in for a MOT, he forgot to tell them to replace it. The car passed and still has a broken speedo :eek:
     
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  20. Barclaybasher

    Barclaybasher Funster

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    Might be difficult top explain zero miles travelled next time though


    :)(y)
     
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