Have you heard the advert for the Tomtom IQ routes? I just heard it on the radio and it seems to be misleading to me. They say that because the tomtom gives a different route for driving on a different day you can get to Cornwall from London in 5 hours rather than 7, therefore saving 2 hours! I can understand if they said that the system reconises if you're driving at a busy time and therefore tells you it's going to take longer but surely changing the route doesn't make it any quicker? Unless it's giving you a longer route on a Monday for some strange reason.

Surely the route would have to be virtually the same anyway wouldn't it? I'm not sure of the exact route but I expect that all the major roads would be the same. You can't save 2 hours by coming off the main roads and going down country lanes.

So surely the advert should say that it gives you a more accurate estimation of the time it'll take for the journey based on when you're driving, not that it changes the route and magically saves you 2 hours. Unless I'm missing something?

It depends where in London you're starting from, and where in Cornwall you're going to. What I guess is happening is that it's deciding whether to use the quickest route or the shortest route, the two being usually very different in time taken. I could explain it in detail, but it's easier if you see it in action for yourself - go to local.live.com, navigate to the far side of London, drop a Drive From pushpin there, then navigate to the far side of Cornwall, dropping a pushpin there for Drive To. See the results you get when you choose between Shortest Time and Shortest Distance.

For me, going from Southend-On-Sea to Penzance gets me 7hr 7minutes travelling 336 miles using the Shortest Distance option, whereas using the Shortest Time takes the journey up by 14 miles, but down by an hour and twenty minutes. I guess TomTom would've spent a little longer manipulating the findings to get their numbers. It probably takes traffic into account too.

So it is valid. Don't worry - TomTom isn't misleading you. Unless the maps are a bit out of date, natch.

Banned

Not sure how it works - but if it is able to know when roads are going to busy and avoid them, its going to cut the time down! eg - avoid the M25 during peak times!

Original Poster

dxx;2378863

It depends where in London you're starting from, and where in Cornwall … It depends where in London you're starting from, and where in Cornwall you're going to. What I guess is happening is that it's deciding whether to use the quickest route or the shortest route, the two being usually very different in time taken. I could explain it in detail, but it's easier if you see it in action for yourself - go to http://local.live.com, navigate to the far side of London, drop a Drive From pushpin there, then navigate to the far side of Cornwall, dropping a pushpin there for Drive To. See the results you get when you choose between Shortest Time and Shortest Distance.For me, going from Southend-On-Sea to Penzance gets me 7hr 7minutes travelling 336 miles using the Shortest Distance option, whereas using the Shortest Time takes the journey up by 14 miles, but down by an hour and twenty minutes. I guess TomTom would've spent a little longer manipulating the findings to get their numbers. It probably takes traffic into account too. So it is valid. Don't worry - TomTom isn't misleading you. Unless the maps are a bit out of date, natch.

Nope, same journey, not to and from different places!

It's comparing to the same journey done last year. The advert suggests that the tomtom is saving them 2 hours by choosing a different route, it's not. The journey is quicker as they're not traveling at a peak time. So the tomtom isn't saving them time. I would hazard a guess that the route would be virtually identical too. On their website they give the example of travelling across London, in that case a different route may save you time, travelling across the country will be the same route each time pretty much.

Original Poster

guv;2378920

Not sure how it works - but if it is able to know when roads are going to … Not sure how it works - but if it is able to know when roads are going to busy and avoid them, its going to cut the time down! eg - avoid the M25 during peak times!

Yes, but the point is they are travelling a different day which is saving them the time, not the different route that the tomtom gives them.

And generally travelling across the country you want to be on the main roads, ie London to Bristol you want to be on the M4, would you do it quicker any other way if it was busy?

Hi all,

Just thought I'd explain IQ Routes a little. The idea behind it is for the last few years the TomTom traffics etc have been logging your average speed on every road in Britain at every time of day. Therefore now it can calculate the route based on the average traffic speed on that route at that time, therefore it is very possible it can take you another way avoiding the traffic hotspots at that said time, and thus save you hours.

That clear it up at all?

Banned

Benjimoron;2378972

Yes, but the point is they are travelling a different day which is saving … Yes, but the point is they are travelling a different day which is saving them the time, not the different route that the tomtom gives them.And generally travelling across the country you want to be on the main roads, ie London to Bristol you want to be on the M4, would you do it quicker any other way if it was busy?

Its not trying to tell you it can beat the quickest routes that are avaiable, just that at times, it can plot quicker routes that avoids the traffic. The example you give from London to Bristol on the M4 is probably not the best example. But if you are travelling from say Ashford in Kent to Bristol, the quickest should be M2, M25, M4. However, this will plot routes to avoid this if it thinks it has a faster route that avoids the congestion.

Original Poster

I understand all of that, it's just that the advert makes it sound like the tomtom is saving you 2 hours on the london to cornwall journey, in fact it's not saving time, it's just telling you that it's take 2 hours longer on a busy day. Doesn't take a rocket scientist (or a tomtom) to tell you that! I doubt it even changes the route much, long distance journeys you're generally best off to stay on the main road.

On a short journey I think it could save you a little time, especially across london where there would be several viable routes to take. I would like to see the routes of london to cornwall to see if it actually changes the route much. I doubt it would as there's generally only one main route.

Also their tag line is save time, fuel and money. Well you may save a little time, 3 minutes in their across london example, but you have to travel further therefore spend more money on more fuel!!! And also create more pollution!

The other problem is that if quite a few people have these devices then everyone will be driving the "quicker" route meaning that it'll get jammed up easily. Then the system will realise that it's a slow way to drive so will swap to the other route, ie it'll keep switching routes as people will keep switching routes.

Banned

Benjimoron;2380625

The other problem is that if quite a few people have these devices then … The other problem is that if quite a few people have these devices then everyone will be driving the "quicker" route meaning that it'll get jammed up easily. Then the system will realise that it's a slow way to drive so will swap to the other route, ie it'll keep switching routes as people will keep switching routes.

Sounds like TomTom isn't for you!:p

Original Poster

guv;2380868

Sounds like TomTom isn't for you!:p

I've got a tomtom, had it for about 5 years. It's brilliant!

Just don't like false advertising, the tomtom isn't saving them the time, it's the fact that they're driving at a quieter time. The tomtom just recognises that it'd take longer on a busy day.

The better routes only work for short distances, longer distances there is usually only one viable route.