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marbar2k
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Joined: Dec 02, 2005
Posts: 67
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 Posted: Wed Feb 01, 2006 8:16 pm Post subject: [i3] Arrival Time Question? |
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does the arrival time work off how fast you are going? i read somewhere that it learns you driving style? is this true?
i would be nice if you could change this to your speed. when do you think we will see the next firmware update/ |
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Nickwolf
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Joined: Apr 01, 2005
Posts: 219
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| Posted: Wed Feb 01, 2006 9:29 pm Post subject: |
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I believe the arrival time is calculated from the distance you have left to travel and by fixed speeds by road type.
I have found that it is extremely optimistic on the i3 and seems to have speeds set at or near the maximum speed limits for the road types. Since I travel around the midlands most days the motorway speeds are ridiculously optimistic.
The unit cannot learn your speeds, as far as I can tell it does not even keep a track of where you have been.
I agree that if you could set your own speed for each road type it would be a vast improvement and it would also allow you to effectively deselect some types of road for routing purposes, but if we wanted all the bells and whistles we should have spent a few more quid I suppose.
Nick. |
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Trajet
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Joined: Oct 04, 2005
Posts: 160
Location: Highlands of Scotland
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| Posted: Wed Feb 01, 2006 10:32 pm Post subject: |
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| Nickwolf wrote: | | The unit cannot learn your speeds, Nick. |
When I first started useing my i3 the ETA was very optimistic. However the more I used it the more accurate the ETA was. If I recall correctly, I think it was Skippy that said when he moves his i3 from his motorbike to car (and vice-versa) the ETA will be over or under stated until the i3 settles down again. |
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Nickwolf
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Joined: Apr 01, 2005
Posts: 219
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| Posted: Wed Feb 01, 2006 10:55 pm Post subject: |
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It might take an email to Garmin to solve this one for sure, but I am fairly certain it does not learn your speed.
Nick. |
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marbar2k
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Joined: Dec 02, 2005
Posts: 67
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| Posted: Thu Feb 02, 2006 12:54 am Post subject: |
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| Nickwolf wrote: | It might take an email to Garmin to solve this one for sure, but I am fairly certain it does not learn your speed.
Nick. |
any offers on emailing?
when do you think we will see the next firmware release? |
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Skippy
Pocket GPS Verifier
Joined: 24/06/2003 00:22:12
Posts: 2946
Location: Escaped to the Antipodies! 36.83°S 174.75°E
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| Posted: Thu Feb 02, 2006 9:49 am Post subject: |
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| Trajet wrote: | | Skippy that said when he moves his i3 from his motorbike to car (and vice-versa) the ETA will be over or under stated until the i3 settles down again. |
Yes, it was me but it's a Quest that I use. I'm pretty sure that the i3 is similar.
The Quest definately does learn the road speeds but it's still very optomistic with it's initial ETA. I wish there was a way to tweak it but I don't know of one.
When you start your trip it will have a guess at your ETA and it adjusts as you drive, according to how much progress you are making. The only way you could achieve it's initial ETA is to be driving in the middle of the night or to have blue lights on!
Some times the ETA is spot on but it is rarely pessimistic. In general, the ETA is a best case scenario. In town, it doesn't seem to take into account that you have to stop at traffic lights, you might hit a traffic jam or that you might do less than 70 MPH on the motorway.
The sat nav has a difficult job to calculate an ETA. Imagine you are driving along 65 miles of motorway. Logic says that this is going to dictate that it will take you about 1 hour. However, you may hit queueing traffic and your speed will drop to 30 MPH or you may cruise at 70 MPH.
There have been a few times when the ETA was dead on from the start of the journey though. You never quite know when to trust it though.
_________________
Gone fishing! |
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Nickwolf
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Joined: Apr 01, 2005
Posts: 219
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| Posted: Thu Feb 02, 2006 7:02 pm Post subject: |
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I emailed Garmin and they sent me the following:
The unit will take the speed you are driver but if it has not 100% signal will not have the speed you are driver.
I have no idea what they mean but I thought someone else may have a gobbledegook translator. 
Nick. |
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ride4smilesjonny
Regular Visitor
Joined: Dec 29, 2005
Posts: 222
Location: teesside
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| Posted: Sun Feb 05, 2006 12:05 am Post subject: |
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i would translate as they havent got a clue so ho-hum diddly um!!
i keep telling her i cant 'GET LOST' - i got an i3! 8O |
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noelmg
Occasional Visitor
Joined: Nov 17, 2005
Posts: 6
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| Posted: Tue Feb 07, 2006 4:58 pm Post subject: |
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| Nickwolf wrote: |
I have found that it is extremely optimistic on the i3 and seems to have speeds set at or near the maximum speed limits for the road types. Since I travel around the midlands most days the motorway speeds are ridiculously optimistic.
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Never had a problem with this, in fact I find it's more pessimistic. It tells me I will get there one time, and driving at a steady 70mph saves about 10 minutes off the ETA over a 2-3 hour drive.
Getting stuck in traffic obviously adds more time on, but it is bound to anyway. At a steady 70mph I saved 10 minutes on a trip to London the other week, I guess it must base motorway speeds on 60mph?
One thing I do find is that if I get caught in traffic in Nav mode, I can take a shortcut I know about and after the unit recalculates it shaves time off the original ETA! |
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alan_t
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Joined: Jan 17, 2006
Posts: 84
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| Posted: Tue Feb 07, 2006 8:19 pm Post subject: |
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i've been within a few minutes of home, and nearly everytime it sates i have atleast 18minutes till i reach my destination.
so for me, i does'nt work, or totally useless.
i'd rather have the actual speed there im travelling at instead. |
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xtraseller
Frequent Visitor
Joined: 15/07/2003 22:59:27
Posts: 1050
Location: United Kingdom
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| Posted: Tue Feb 07, 2006 9:06 pm Post subject: Nuvi ETA |
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I use the Garmin Nuvi, and while I don't know if it "learns" your average driving speeds, but recently it's been within a minute or two for the whole journey, even on 1-2 hour journeys, which isn't bad
One of two things, either my speed is starting to control the Nuvi's ETA or (perhaps more likely) the Nuvi is starting to take over my driving!!! |
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Nickwolf
Regular Visitor
Joined: Apr 01, 2005
Posts: 219
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| Posted: Tue Feb 07, 2006 10:11 pm Post subject: |
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| alan_t wrote: | | i'd rather have the actual speed |
Either that or the distance left to travel.
Nick. |
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Trajet
Regular Visitor
Joined: Oct 04, 2005
Posts: 160
Location: Highlands of Scotland
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| Posted: Tue Feb 07, 2006 11:20 pm Post subject: Re: Nuvi ETA |
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| xtraseller wrote: | | the Nuvi is starting to take over my driving!!! |
Can I borrow it?.......I could do with something taking over my driving!! :D |
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alan_t
Regular Visitor
Joined: Jan 17, 2006
Posts: 84
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| Posted: Wed Feb 08, 2006 12:46 am Post subject: |
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| Nickwolf wrote: | | alan_t wrote: | | i'd rather have the actual speed |
Either that or the distance left to travel.
Nick. |
yes, that would be a great feature also. |
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