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Joined: Jul 27, 2004 Posts: 86 Location: Midlands, UK
Posted: Tue Jun 28, 2011 12:33 pm Post subject:
Johnm52,
That's fascinating.
I did the same just now, and planned a route that finished just after a small delay. I worked backwards up the main road (replanning from different start points) to see what the cut-off point is for including delays.
Looks like it's between 43 and 45 miles (70 Km perhaps?). This certainly coincides with my findings in the 1005, where traffic would "appear" at 41 miles (couple of minutes downloading / processing etc).
Joined: Jul 27, 2004 Posts: 86 Location: Midlands, UK
Posted: Tue Jun 28, 2011 1:05 pm Post subject:
And... the TT PND is downloading traffic at a range of 75 miles (so that's 30 miles of ignored data in the 1005). The Garmin 3D Traffic is downloading at a range of 100 miles, but then it is less detailed than the TT data.
Looks like the 43 miles is "policy", so it is unlikely to get better.
I have got Tomtom to look at this issue for you, and us all!
Can you provide me with your device information
snip
Steven
Hi falkirk81
Just to confirm that the calculations using the route planner on the website are simply using the standard web page. It does puzzle me that they cannot appear to see the problem when it does exist on the webpage but instead ask for all the device info etc - as though it is only one specific device that is affected.
I think, reading the thread, that pottsy will not be able to give you the required info since he has returned the unit in question - does this mean that TomTom will just wash their hands of any investigation.
I am pleased that you have taken this issue up and are in contact with those who can fix it.
Joined: Jul 27, 2004 Posts: 86 Location: Midlands, UK
Posted: Thu Jun 30, 2011 1:22 pm Post subject:
Steven,
Thanks. Remember that there are two issues - firstly they have reduced the range of the downloaded data to around 70-75 miles. Secondly the new devices (1000/1005) do not display nor act on that data until around 40 miles. So even though the 1005 knows there is a huge delay ahead, it will show you an empty sidebar and optimistic ETA until you get close.
Joined: Feb 01, 2006 Posts: 2543 Location: Rainham, Kent. England.
Posted: Thu Jun 30, 2011 2:36 pm Post subject:
I've been reading with some interest about this 'problem' and to be honest haven't found it to be one.
I just set a route from Gillingham (Kent) to Drumnadrochit and my via LIVE 120 estimates the journey time of 10h 28m and 609 miles (average speed 58mph). taking into account a 8 minute delay to to Busy Roads and queuing traffic at the Dartford Crossing 1 minute. Does anyone really believe the '1 minute delay'? In your dreams! Would I rely on the ETA? Not on your life.
Zooming in on the map I find there is an incident near Saffron Warden, about 67 miles away, lane closed. About the time I'm 44 miles from there it would recalculate route.
I could have left home expecting to arrive in 10h 28m but while typing this things have changed. The ETA is now 10:25, 625 miles. Busy Roads 13 minutes delay, 2 incidents on M25 2 mins and 1 minute. (And these ETA's are for non stop driving, so what's the point of using the ETA?).
I've found, over the years, before and after using sat nav, my average 'overall' speed for journeys of 100 miles or more is around 50mph, so Drumnadrochit would be a minimum of 12 hours which takes into account the stops I make on the way.
The E in ETA is a bit of a clue. ESTIMATED T A. One thing for sure, as you arrive the ETA will be right or maybe a minute out.
(Now wait for the flak). _________________ Formerly known as Lost_Property
And NO that's NOT me in the Avatar.
Joined: Jul 27, 2004 Posts: 86 Location: Midlands, UK
Posted: Thu Jun 30, 2011 3:35 pm Post subject:
Border_collie,
I think there are 3 basic types of journey we could discuss.
1. Long range, like your example. More than (say) 100 miles, and where the traffic at the latter end is of course irrelevant when you set off.
2. Medium range. Say 42 to 100 miles. A more common type of journey, where you may want to chose one of 2 or 3 possible basic routes. This is an important decision because if there is an incident at the far end, it will most likely still be there when you get there. A crash on a motorway can close it and cause chaos in the area for several hours, not several minutes.
3. Short journeys, less than 42 miles.
The new and old Tomtoms are all fine with 3.
The old Tomtoms were OK with number 2, but they are now restricted to 75 miles. The new Tomtoms are useless, as they have a range of 42 miles (or so). The Garmin has a range of 100 miles.
And finally, only a fully working crystal ball will work with number 1.
I have an incident at the end of my route to work. It will be there until 2014 (I think) so it's not going to clear. I need to know how much of a mess there is in that incident before I set off. The old Tomtoms will tell me, the new ones will not.
This is a retrograde step, for me. It won't affect someone who just does crystal ball 600 mile trips (although an earlier warning of impending doom might be nice), and it won't affect someone who does 30 mile trips. But it's a stopper for those who do medium range trips, it is worse than the old models, and it was bad enough for me to return the unit.
Joined: Aug 20, 2008 Posts: 32 Location: Newcastle upon Tyne
Posted: Thu Jun 30, 2011 3:54 pm Post subject:
I make about six trips each year from Newcastle to East Sussex. There are two major routes: A1 - A14 - M11 - M25 Dartford Crossing and M1 - M25 west of London. I have to make the decision where the A1 and M1 split near Leeds; there is no easy way to get from one to the other further south. I accept that things can change during the journey, but major road works and fatal accidents are unlikely to clear quickly.
That said, I usually look on my PC before setting off, choose my preferred route and put in a "via" to force TomTom to pick the route I want.
Seeing incidents further than 40 miles ahead can also allow me to warn those I am meeting that I might be late.
I vote for TomTom allowing us to set the range for it to look ahead. Maybe a choice of 40 miles, 100 miles or all the way to the destination. _________________ John
1005 Live
App: 12.071
Map: Europe v925.5413
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