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Chat Area => General Car Chat => Topic started by: terry paget on 16 April 2016, 13:59:33

Title: Does my satnav record my speed?
Post by: terry paget on 16 April 2016, 13:59:33
Article in the Telegraph 15Ap16 p10, coroner's inquest report of a fatal crash, says 'Ms Reason, a manager at a karting track, was travelling at up to 102mph when her Audi hit a lorry that was stationary on the wrong side of the road as it attempted to do a U-turn.' It does not state how this speed was determined. I have long suspected that satnavs record data  Do they?
Title: Re: Does my satnav record my speed?
Post by: Nick W on 16 April 2016, 14:10:37
No.


The speed will have been calculated from a number of factors, including the vehicle weights, damage caused, how much the vehicles moved - particularly the stationary one, the friction of the road surface etc. This is why you see the investigators taking lots of measurements as to where the vehicles end up and where they started from. This takes a lot of time, especially when there is more than vehicle involved, and is why roads are closed for so long after fatal crashes(they are not accidents!).


There is another simpler way that sometimes works: the speedo needle might be stuck!
Title: Re: Does my satnav record my speed?
Post by: Andy H on 16 April 2016, 14:37:29
My Garmin Quest does. What Satnav do you use?
Title: Re: Does my satnav record my speed?
Post by: zirk on 16 April 2016, 14:38:40
Some modern SatNavs will effectively record a journey, in its simplest form it does it the learn 'Driver Behavior', ie you deviate off the SatNavs planed journey, do this a few times and the unit wil learn from this, other Satnav's will store the Journey history, or waypoints and store them in a Data Form or sometimes a user Spread Sheet export file.

The one in the Mig ie, NCDC,  doesn't record or store any usable data.
Title: Re: Does my satnav record my speed?
Post by: Andy H on 16 April 2016, 14:42:00
Any Satnav that stores 'tracks' will store enough information to calculate vehicle speed.
Title: Re: Does my satnav record my speed?
Post by: terry paget on 16 April 2016, 14:54:39
My Garmin Quest does. What Satnav do you use?
GarminNUVI2595LMT
Title: Re: Does my satnav record my speed?
Post by: 05omegav6 on 16 April 2016, 16:38:38
Said Audi might have had a factory unit which might store vehicle data :-\
Title: Re: Does my satnav record my speed?
Post by: plym ian on 16 April 2016, 16:41:20
My garmin does and reckons that my max speed ive done in the onega is 165mph ;D :D
Title: Re: Does my satnav record my speed?
Post by: steve6367 on 16 April 2016, 18:24:21
Article in the Telegraph 15Ap16 p10, coroner's inquest report of a fatal crash, says 'Ms Reason, a manager at a karting track, was travelling at up to 102mph when her Audi hit a lorry that was stationary on the wrong side of the road as it attempted to do a U-turn.' It does not state how this speed was determined. I have long suspected that satnavs record data  Do they?

My records speed, acceleration, altitude, route etc - if you ask it to.