Does Waze consider smaller roads into it's routing?

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Re: Does Waze consider smaller roads into it's routing?

Postby thefatveganchef » Tue Jul 17, 2012 2:48 am

I have a ~ 64km drive each way to work, and I have several options on getting there. I have found that with leaving Waze on and driving those options Waze has learned the routes and time of those routes (all the routes I take all take about the same ammount of time because of distance and I normally don't drive durring rush hour) however one of the suggested routes it gives me as an alternitave is 4 miles of street driving vs 4 miles of highway driving because it knows that durring that time durring the day it is faster to take the surface route over vs the highway drive. You may just have to use waze out of navigation mode a few times on the surface roads to make it realise that the surface roads are quicker than the highways. That is granted your route doesn't have any map issues as suggested above. Once it learns that this is a faster alternitave durring rush hour it might just start navigating you that way too.
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Re: Does Waze consider smaller roads into it's routing?

Postby floppyrod84 » Tue Jul 17, 2012 2:19 am

Waze does love the M6 Toll and with good reason. It's at least 10-20% quicker than the M1 or M6, mainly because you have to pay for it.
If you can give us a rough start and end point, and the route you think Waze should take you, we can have a look and see if there are any map problems causing this.
FYI, you'd have got a quicker response from someone in the UK if you had posted in the UK subforum ;-)
Oh, waze does indeed use smaller roads, better than other SatNav apps I find, but the map must be correct, etc.

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Re: Does Waze consider smaller roads into it's routing?

Postby RallyChris » Mon Jul 16, 2012 10:49 pm

Antmannz wrote:I have a feeling junction points also create quite a penalty when calculating routes.

I've seen where a misplaced additional junction point on a primary road caused Waze to route around back streets to avoid it (reducing the total number of junction points traversed).

In theory toll roads, freeways and motorways should have less junction points than standard streets (especially over a distance), thereby giving them quite a precedence when being chosen.


When they first started waze, we were told that a junction adds a 5 second penalty.

The last we saw, was that junction where there were no options don't have a penalty.

Again, this is black box and what they leak. And sometimes I think they misspeak themselves. So take the above with a grain of salt.
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Re: Does Waze consider smaller roads into it's routing?

Postby Antmannz » Mon Jul 16, 2012 10:40 pm

I have a feeling junction points also create quite a penalty when calculating routes.

I've seen where a misplaced additional junction point on a primary road caused Waze to route around back streets to avoid it (reducing the total number of junction points traversed).

In theory toll roads, freeways and motorways should have less junction points than standard streets (especially over a distance), thereby giving them quite a precedence when being chosen.
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Re: Does Waze consider smaller roads into it's routing?

Postby RallyChris » Mon Jul 16, 2012 5:31 pm

The routing code is a "secret formula". Which makes sense, since this not an open source project, but a business.

What we have been told about the behind the scenes working, is that waze will put a higher preference on higher and higher types of roads based on the distance of the route. (IE: as you go up in distance, the more and more it will prefer to use freeways only)

Waze makes it sound like they will not even consider some types of roads based on the distance, but real world examples make this seem to be incorrect.

More like (and my opinion) is that the longer the route, the higher the penalties waze puts on using a lower type of road, and maybe the more likely waze stop trying to make an alternative work.

Also putting a different spin on it, is if the traffic was discovered after the initial route was created. I've seen little data from waze on how this is handled. When does it start looking for alternatives? Does it just try to find how to get around the traffic or does it just recalc from where the traffic starts?
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Does Waze consider smaller roads into it's routing?

Postby Darthreflon » Sat Jul 21, 2012 3:47 pm

Basically it should take the freeways and such to begin with but when it detects heavy traffic or anything that will slow you down, it should start looking to all the roads nearby. Now I'm not sure if that's how they have it setup and it's just doing that cuz of a bug or something or they have it setup a different way but to me that seems like the most logical way.
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Does Waze consider smaller roads into it's routing?

Postby kotatsu » Mon Jul 16, 2012 5:19 pm

My daily commute is a long one and in a densely populated area of the country. As such I have many possible routes to take, including a toll motorway (M6 Toll), a few non-toll motorways, and lots of smaller roads. Waze really, REALLY loves the M6 Toll, but even when it does offer me non-toll routes they're always on the other major motorways, even if they're horribly congested.

Because of this, I have to use other GPS apps on my iPhone when traffic is bad, as they consider smaller roads and can save me a lot of time. As an example, last Friday evening the traffic was spectacularly bad, as it often is, and yet Waze only offered me the same three motorway routes as usual. (two using the M6 toll). Each would have taken around three hours to complete had I been foolish enough to attempt them. By contrast, Co-Pilot routed me through villages and on A roads and got me home in 1 hour 45 minutes. It was a complex route but hugely quicker, and completely avoided the traffic apocalypse on the major roads.

So please, if Waze can be made to consider all roads, then make it so, as right now it just isn't much use when the traffic is bad...
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