[Talk-GB] Mapping dangerous - but valid - routes
shaun at shaunmcdonald.me.uk
Mon Dec 5 16:28:09 UTC 2016
I'd keep it in, ensure other object information such as the number of lanes is included within the data. Then the routing engine can take account of the additional information, such as avoiding, but not exempting (thus creating islands that you can't walk out of) at crossing points that cross 3 lanes of traffic. You can also present a warning that there is an uncontrolled crossing and you need to cross 3 lanes of traffic if this is the only suitable route.
> On 5 Dec 2016, at 16:12, Stuart Reynolds <stuart at travelinesoutheast.org.uk> wrote:
> At Stirling Corner, on the A1 in Barnet, there is a cycle way (hence also available for pedestrians) that goes around the outside of the roundabout (http://www.openstreetmap.org/way/78315291 <http://www.openstreetmap.org/way/78315291>). A cursory glance at satellite mapping shows it to be well defined, and marked. But it will also highlight that where you cross the southbound A1 to the south of the roundabout (and likewise the northbound A1 to the north) it is highly dangerous. You have to cross three lanes of traffic, and there is always a flow of some sort, either from the A1 or from the side roads.
> What is the right course of action here - leave it in, because it reflects what is on the ground, or take it out on safety grounds. This isn’t an idle question - a user of my website has stated that it is dangerous to use, and has asked me to remove it. My conclusion was to leave it in, but as it cuts to what it is that is being produced here - an accurate cartographic representation of the world, regardless, or something a little different - I thought I would ask for views.
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