[Talk-in] Why are so many roads tagged with multiple speeds?

[Devdatta Tengshe]

So should I go ahead and update these to the lowest number? (One by one
after checking each record manually)


(We were running a local instance of Valhalla on an osm extract, and it
wasn't giving us the correct route in some cases; Diagnosing that issue led
me to such ways which have such incorrect speed values.)

Regards,
Devdatta Tengshe

On Thu, 19 May, 2022, 6:41 pm Chetan H A, <chetanha91 at gmail.com> wrote:

> This could be a tagging mistake.
>
> Example: *maxspeed=50* will be assigned to the road based on the signboard
> <https://kartaview.org/map/@12.427455781439676,76.71715356774553,12z>
> If there are separate speeds mentioned for different vehicle types
> <https://wiki.openstreetmap.org/wiki/Key:maxspeed#Vehicles>, then we can
> tag with *maxspeed:hgv=** (high good vehicles like lorry etc.)
>
> Regards,
> Chetan
>
> On Thu, May 19, 2022 at 3:29 PM Devdatta Tengshe <devdatta at tengshe.in>
> wrote:
>
>> I was using OSM inspector, and found that there are so many roads which
>> are tagged with multiple speeds, such as:
>>
>> https://www.openstreetmap.org/way/1018752726
>>
>> https://www.openstreetmap.org/way/157746064
>>
>> Is there a specific reason so many roads are tagged like this?
>>
>> Regards,
>> Devdatta
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