[Talk-GB] Quiet lanes and "one car per minute"

Craig Loftus craigloftus+osm at googlemail.com
Thu Jan 20 13:58:43 GMT 2011


I like the idea. And although I like the simplicity, I think it might be
worth somehow taking account for seasonable variability. There a number of
quiet roads in the Lakes etc. atm that I wouldn't want to walk down in the
summer. Perhaps the simplest approach would be using traffic:note to say
when the last survey was made, allowing another user to average/update in an
informed way.

Might there also be existing sources of this data (for some roads) 'owned'
by local authorities or highways agencies; these are guesses, I don't know
who does this kind of surveying.

> I think in my part of the SW the large majority of highway=unclassified
would be <=1 car a minute average so just from a tagging perspective
> it would be a lot easier just tagging those few that are busier.

I agree, working with assumed values based on way classification would make
it a lot easier.

Cheers,
Craig

On 20 January 2011 13:52, Kevin Peat <kevin at kevinpeat.com> wrote:

> Richard,
>
> I think in my part of the SW the large majority of highway=unclassified
> would be <=1 car a minute average so just from a tagging perspective it
> would be a lot easier just tagging those few that are busier.
>
> Kevin
>
>
>
>
>
>
>
> On 20 January 2011 12:48, Richard Fairhurst <richard at systemed.net> wrote:
>
>> Hi all,
>>
>> Sending this to talk-gb@ first (rather than tagging@ or talk@) as I'm
>> just floating an idea...
>>
>> I've long wanted to get motor traffic levels on rural roads into OSM.
>> Traffic levels make a huge difference to the enjoyability of rural cycling,
>> and would enable really fun rendering and routing possibilities.
>> OpenCycleMap could highlight quiet minor lanes even if they weren't in the
>> NCN. CycleStreets could prefer them. I could do a lovely cycle touring map
>> in the style of the old quarter-inch OS maps. And so on.
>>
>> Traffic levels are, also, a real pain in the saddle to record.
>>
>> OSM's iterative; always has been. We start as a broad-brush survey and get
>> more detailed as time goes on. So it doesn't matter if we don't get detailed
>> hour-by-hour traffic averages to begin with - it'll get better once people
>> are used to recording it. But how to do that?
>>
>> Looking at some Sustrans and Countryside Agency design documents, it turns
>> out that they share a criterion for quiet lanes: 1000 vehicles per day.
>> Let's say (remember, we're talking really broad-brush here) that traffic is
>> reasonably even between 6am and 10pm, i.e. 16 hours, and absent at other
>> times. That's 1000/16=62.5 vehicles per hour.
>>
>> One car per minute.
>>
>> So, how about it? Find a country lane. If you're standing there at a
>> typical time of day, and there's less than one car per minute, that's a
>> quiet lane. Tag it traffic=quiet, or if you'd like to be precise,
>> traffic:hourly=<60 (or whatever). Really simple.
>>
>> We could do great things with this. As time went on, no doubt people would
>> get into surveying it with more and more detail. Comments welcome!
>>
>> cheers
>> Richard
>>
>>
>>
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>
>
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