These appear to be the only means of applying the 'Quiet Lane' denomination as a workaround, since it does not exist in OSM. The designation is signposted, and means foot traffic, farm traffic, pedestrians, animals, cyclists etc. etc. are to be expected around every corner of the single track lanes with limited passing places. The lanes in question are on the national cycle network as well since they are byways, obviously entirely unsuitable as through routes. In Cornwall it is not uncommon for local lanes to be grassy and rutted, with overhanging trees causing width limitations. It is not financially feasible for the Council to mark the many thousand lanes with 'local access' signs, and was not a problem before satnav. A local bridge has been damaged several times by large vehicles (goods, camper vans, caravans) going down these unsuitable roads and getting stuck, at great local disruption. Discussion with the drivers shows they were blindly following satnav directions. For satnav systems that take data from OSM, there is no way of ensuring this completely unsuitable route is not suggested rather than the main signposted A and B roads into Truro. Local feeling is running high, with others in discussion with Google Maps. The lane to the A39 is a private road for farm access, now regularly attempted by vans that then discover they can't make the corner or narrow gaps between gateposts.