Show speed limits om roads you drive.

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Re: Re: Show speed limits om roads you drive.

Postby WeeeZer14 » Mon Feb 13, 2012 5:03 pm

gordonski wrote:Then I wonder, why waze collects speed information and calculates average speeds for roads, when they are not needed IN ANY WAY?


Average speeds are realistic. Speed limits are theoretical.

You can have two roads with the same speed limit. One is lightly traveled, smooth, and straight with limited to no merges. The average speed may be well above the posted limit.

The other may be in an urban area, with lots of volume, rough road surfaces, many on and off ramps with not much room to merge. The average speed may be well BELOW the posted limit.

The average speed is what is important for routing.

Maybe it is a regional thing, but most everywhere in the US the speed limits are set according to political whim and not set by road engineers. And I would say the vast majority of the population ignores the speed limit on all but the smallest of local roads.
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Re: Show speed limits om roads you drive.

Postby WeeeZer14 » Mon Jan 16, 2012 11:27 pm

In the US where each state sets their own "defaults" and then the individual counties and cities may have their own on top of that.

And as a person who may take the speed limit as an, um, suggestion sometimes, if Waze made a noticeable effort to tell me I was over, I would quickly tire of it and want a way to disable it. I can see users actually stop using Waze over something like this.

We have a problem in the US where some speed limits are set artificially low and easily 80% of traffic travels at 10mph over the posted limit.
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Re: Show speed limits om roads you drive.

Postby WayzNut » Tue Nov 13, 2012 8:16 am

I can see the arguments about the accuracy of the posted speed limit and the changes needed in the backend to support this new piece of information. One thing I can see that waze could do easily is to change the color of the speedometer circle (just the outline of the circle) to a different color. Black (same as now) if you are within 10% of the AVERAGE speed of the segment at that day of week/time over the past week or month. Red outline if 10% above the AVERAGE, and yellow if 10% below the AVERAGE speed of the segment. No need for a sound, popup or anything. (although some may like/want it)

This would help people that are unfamiliar with the area to know what the average speed normally is. They would still be responsible to find out the actual speed LIMIT, but at least they will not be going way too slow and get rear ended.

This type of system would not require much of a backend change since waze already has the data and they are not trying to represent a limit, only an average.

Just my thoughts.
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Show speed limits om roads you drive.

Postby volmun » Sat Jan 14, 2012 2:09 pm

I'm living in Sweden and I think it must be doneable to get all speeds limit for free for the hole country.

Wouldm´t it bee possible to link this information to the road maps in cases like here? If not please tell why.

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Re: Show speed limits om roads you drive.

Postby Spil » Wed Jan 18, 2012 3:12 am

gettingthere wrote:
iahim wrote:If I understand correctly, for each road, Waze keeps a record of the the average hourly speed. They could use the maximum hourly average to estimate the speed limit. Based on that, like somebody suggested a few weeks ago in a post, change the color of the speedometer to let you know that you may be above the speed limit (green if you're at or bellow the speed limit, yellow for 10% above, etc.) That's less likely to create problems than displaying an incorrect speed limit on the screen.


We've been through this discussion before in another thread.

Waze's average speed has absolutely no direct relationship to a speed limit. Waze does not need to be presenting this data as speed limits.

While I agree that the "average speed" is nowhere near the true speed limit, I think that iahim's point may have been that the "average speed" data could be used as a temporary initial value in the database for the new "speed limit" field, until such a time as the AM's and other editors can get the true speed limit values entered for the segments in their areas.
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Re: Show speed limits om roads you drive.

Postby Shaigan » Mon Jan 16, 2012 11:34 pm

Arg.

For the first time, it should be easy in France ;)
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Re: Show speed limits om roads you drive.

Postby Shaigan » Mon Jan 16, 2012 11:06 pm

If not in town, then according to the segment type and to the country, the speed limit is easy to find for "deafult" value. Is there is a special road with another limit, AM are there to change them.

If in town, the speed limit is easy to find as "default" value, according to the country. And if there are some streets with special limits, AM are there again.

No ?
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Re: Show speed limits om roads you drive.

Postby Scruffy151 » Tue Nov 13, 2012 2:17 pm

WayzNut wrote:I can see the arguments about the accuracy of the posted speed limit and the changes needed in the backend to support this new piece of information. One thing I can see that waze could do easily is to change the color of the speedometer circle (just the outline of the circle) to a different color. Black (same as now) if you are within 10% of the AVERAGE speed of the segment at that day of week/time over the past week or month. Red outline if 10% above the AVERAGE, and yellow if 10% below the AVERAGE speed of the segment. No need for a sound, popup or anything. (although some may like/want it)


I think that a similar thing would be more in keeping with waze's strategy than worrying about the actual speed limit. The difference I would suggest is to color code the same as traffic reports. So if you are significantly slower the speedometer would turn red, a little slower it would turn yellow, near or exceeding the average would be black/no color.
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Re: Show speed limits om roads you drive.

Postby RallyChris » Mon Jan 16, 2012 11:04 pm

Then there is the added liability. We already have cases of people suing GPS companies for driving them down unimproved roads, or into a river. Even with the disclaimer that no one reads, there might be just a little to much added liability here, for what has been pointed out, little return.
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Re: Show speed limits om roads you drive.

Postby RallyChris » Mon Jan 16, 2012 6:37 pm

Has been suggested before, and there is a uservoice post for it.

http://waze.uservoice.com/forums/59225- ... ?ref=title

The problem is, where to get the data from, and who updates it. Everything currently in the map, can over time be determined by watching people drive. But speed limit is not (as some people speed <gasp>).
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