Update: for a comparison with the Garmin Nuvi, check this review
I’ve been using the TomTom Go for about 3 months now. On the whole, I’m happy with it, it’s very useful with a minimum of fuss. However, considering this is regarded as being a good example of the breed, I’m a bit disappointed with some very obvious shortcomings.
First the gratuitous: It beeps with the loudest and most disturbing beep everytime I go near a speed camera. You can turn the function off completely, by removing the speed camera database from the device. Given that it also knows my speed (to the extent that it warns me if I ever exceed the limit), isn’t it a bit stupid that it feels the need to alert me to the fact that there is a speed camera set to go off at 40 mph as if it were a world ending catastrophy, even when it’s perfectly aware that I’m crawling along in a queue of traffic at 10mph. A much better solution would be to only alert me to the presence of a speed camera if I’m near or over the speed limit.
It’s nice that you can set that the distances be measured in yards/miles or metres/kilometers, however, I’m from that unhappy few generations in the UK that are happiest with meters for short distances and miles for long distances. Why can’t I set that? Better yet, why can’t I set the short distances in meters and say that the long distances should be in whatever the road signs are in, km in europe and miles in the UK/USA.
When it comes to trip management, I’ve seen bike computers that are more advanced. I’d like to be able to plan multiple journeys over multiple days. Relying on the “recent destinations” is ok, but it’s not good enough for a grown up system. And why the restriction to only one ‘avoid’ or ‘via’ per trip? That’s silly and can really get in the way. Sometimes it’ll tell you that it’s impossible to plan a route with the avoid or via, that it’s clearly not – it’ll do it as two separate journeys happily enough. It’s good that it gives you the options to avoid toll roads, but I’d like to know what the trade off is – I’d like it to tell me the time difference between using all roads, or only non toll ones – what I’d pay in toll, and what I’d pay otherwise in miles and fuel. Speaking of which, although there doesn’t seem to be a bluetooth standard profile for ‘car’ that would let it get at the mileage and fuel usage, there’s no reason why it couldn’t allow me to enter the fuel amounts and cost when I fill up so it could record and manage that as well.
It’d be nice to have a bunch of stats at the end of the trip. Distance travelled, average speed, rest stops, fuel stops, time, comparisons to other times you’ve made the same journey. Maybe even some graphing and mapping. The time estimates for different parts of the journey could be taken from history rather than simplistic statistics – that would even inform nicely different route options.
The thing has bluetooth for mobile data and handsfree calling (nice touch), but why doesn’t it let me download the gps locations of my entire last monthsworth of trips, and then let me geotag my photos with it, or show me pretty maps with my driving marked on? With mobile data, it could even mark on recent trips taken by friends, optionally with their photos, when you’re out there driving or walking. That might get a little busy I suppose, but it’s an option for adding interesting social data. Why can’t I use it with my own mapping software and my laptop should I want to? I haven’t really used it’s mobile data functionality, because I’m concerned about the cost of phone network data, but it would have been nice if it had a wifi connection, and could automatically connect over any available wifi to receive updates.
Then we come to accuracy. Generally it’s fine, but you start to notice things that are pretty jarring. There are about 15 miles of the A1 that according to it are in a field, some way to the west. It will sometimes say “keep left” when it means “turn left”, or “keep right” when actually, there’s no keeping involved, and your next action is to turn the opposite way. It’s all very well knowing which bit of the road you’re on and what you need to do next, but it’d be a massive help if it actually knew which lane(s) you needed to be in for your next manoever and warned you about that. It also has a nasty habit of warning you about the next turn just as you have another option to choose. It’s got a map there, it could easily check to make sure that you aren’t just coming up to a turning, and give you the next instruction a few seconds later so it’s not confusing. In fact, it’s better to receive any instruction when there isn’t an immediate road decision to be made. Generally the accuracy of the roads is good (barring one or two mistakes), but you’ll still need to look at the map every now and then rather than blindly trusting the voice and it’s disembodied instructions.
The map by the way does tend to be clear and well presented, and less likely to confuse than the voice. It’d be nice to have an overview map or something that gave a greater appreciation for what was coming up, but considering the screen size, that probably wouldn’t work. It has 2d and 3d views, although I generally find the top down 2d view the most useful. The touch screen interface is really nice to use.
When it comes to things other than the roads and houses on them, it’s accuracy is much much worse. They’re called Points Of Interest on the tomtom, and although it’s massively useful to have them, you should count on driving around the rough area of the symbol to find them. It took me straight to the nearest hospital in a strange place when I needed it, which was nice, but a few days ago, I was trying to get to the nearest post office depot. It took me down a tiny deadend of a side road with no turning space before proudly announcing “you have reached your destination”. Looking around, sure enough, I saw the Post Office depot, very close, just on the other side of a railway line. It took me half an hour to get to it from there, with no help from the the tomtom which was convinced that I had reached my destination and should probably turn around when possible to get back to it. I’ve had similar problems with petrol stations which are often on the opposite side of the road and a block or two away from where they’re supposed to be. Directing us to the nearest cinema we nearly ended up in the river, although it did have the rough area right, another 5 minutes of driving around nailed it. Although once you discover this problem, you can set a favourite to a specific location, it’d be nice to be able to correct the POIs on the device (assuming it is impossible to get them all right the first time). The way that if you go off what it thinks of as the road, it just draws a straight line to the nearest road, is ok most of the time, but it would be nicer if it remembered how you got there, and so took you back by the same route (and would it be too much to ask for it to update its internal map too?), instead of giving you nonsense instructions.
That same journey showed up another problem. It tried to join me onto a main road from a side road that had traffic lights set on timings to let only 2 cars through each time. The fact that I was in a huge queue meant I sat on that stretch of road for 20 minutes. It should know the timings on the traffic lights, and if it’s finding that I’m crawling, I’d like it to offer other alternatives. In fact, there are a number of decisions I can get better information for than it. If I can see that the traffic is terrible ahead, I might like to know alternative possibilities as I’m driving towards them so I can adjust the plan – perhaps alternative routes could be marked, with some indicator to show how much worse they are than the primary route.
My conclusion is that I’m really pleased to have a GPS in my car when I’m travelling, but it still feels like it’s early days. There are so many obvious improvements to the software, and data accuracy needed that it’s hard to imagine that 2006 was supposedly the year of the GPS, it’s still very immature, completely unable to learn from or store history, it’s a device that does it’s job the way it thinks it should, and although that’ll work well most of the time, it’ll be very frustrating the rest.