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Tungstenc Occasional Visitor
Joined: Dec 05, 2005 Posts: 5
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Posted: Wed Jun 21, 2006 9:51 am Post subject: Estimated time of Arrival (ETA) |
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Not sure if this is the right group to post to but here goes.
Is it possible to alter the road speeds that Destinator uses to calculate the ETA. I often travel up and down the country but have never managed to get anywhere near the ETA without breaking the speed limits. An old Autoroute program, 97 I think used to use would let you set the speeds for 'A' roads and 'Motorways' and was much more accurate even allowing for holdups. |
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Border_Collie Pocket GPS Verifier
Joined: Feb 01, 2006 Posts: 2543 Location: Rainham, Kent. England.
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Posted: Wed Jun 21, 2006 3:21 pm Post subject: |
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Quote: | have never managed to get anywhere near the ETA without breaking the speed limits |
I assume you mean the ETA after setting your destination and before driving off. I always assume the initial figure to be the very best ETA possible under perfect road and traffic conditions and not stopping for a rest.
It would be hard to arrive sooner than the ETA especially as it updates according to speed travelled and distance left to go. _________________ Formerly known as Lost_Property
And NO that's NOT me in the Avatar. |
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kartracer Frequent Visitor
Joined: 26/03/2003 20:15:33 Posts: 502 Location: United Kingdom
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Posted: Wed Jun 21, 2006 6:08 pm Post subject: |
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Lost_Property wrote: | I always assume the initial figure to be the very best ETA possible under perfect road and traffic conditions and not stopping for a rest. | I have never used Destinator, but with all the other Satnav systems that I have used I have found that I can treat the initial ETA as almost a worst case. They always seem to overestimate my journey times by about 20%, which is handy on long journeys as I get a built in allowance for fuel and rest stops! _________________ Kam |
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Tungstenc Occasional Visitor
Joined: Dec 05, 2005 Posts: 5
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Posted: Thu Jun 22, 2006 11:34 am Post subject: |
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In my case it probably underestimates by about 20%. Judging by the two replies it seems that the method of calculation is preset and cannot be changed. |
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