[OSM-talk] Tagging for street danger levels

[john whelan]

I'm also interested in this as Ottawa has recommended cycling routes mainly
between cycle lanes and cycle paths how should they be tagged?

Thanks John

On 19 June 2010 13:51, Toby Murray <toby.murray at gmail.com> wrote:

> Someone in my area is starting up a new website that is focused on
> cycling in the city. They have decided to use OSM as their map which
> is awesome. The question is: are there any tagging conventions to
> indicate how dangerous a particular stretch of road is to cyclists?
> They want to produce a map of the city that highlights the dangerous
> roads to avoid in order to show how they act as barriers and make it
> very difficult to move around town on a bicycle. I could also see a
> different map that highlights the safest roads and paths. It seems
> like this information would also be useful to routing services to be
> able to come up with bicycle specific routes that avoid the "certain
> death" roads.
>
> I see a "hazard=" tag but it doesn't seem to be used very much and is
> a little too general for what I had in mind. Perhaps hazard:cycle=
> with some kind of hazard level indication would work. I could see
> using numbers (0=safe path or bike lane, 1=residential/low traffic
> road, 2=bigger roads with higher speed traffic, 3=avoid at all costs)
> or some other string based identifier if that is deemed easier to
> understand. Some of this information could probably be implied by the
> highway= tag but that is a pretty incomplete picture. There are parts
> of the same road here in town that vary between different levels,
> usually getting far more dangerous when they hit a hill and start
> curving around. Also, there are several highways leading out of town
> that are similar to each other except for traffic flow which makes
> some of them absolutely wonderful to ride on while others are a death
> trap. I realize this can be somewhat subjective but I think there
> could be pretty good consensus among cyclists in a given area.
>
> Since I haven't found any tags on the subject I'm assuming there is no
> renderer support for such a concept either so I may end up trying to
> do some custom rendering which is another topic entirely... But I'm
> thinking if there is a consensus on this then support for it could be
> added to opencyclemap, hikebikemap, etc.
>
> Thoughts?
>
> Toby
>
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