<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>The principle "yes vs. no vs. unrecorded" is no total ban of default values.</div><div>But if both, "yes" and "no" have a certain likelyhood, you mustn't use "no" as a default value.</div><div><br></div><div>Toll is a good example:</div><div>In a region without toll roads or on a type of roads that is always for free, you need not tag tool=no.</div><div>In coutries like France and Italy, where most motorways are tollroads, but some are for free, </div><div>you ought to tag toll=yes to the pay sections and toll=no to the free sections.</div><div><br></div><div>But motorways tend to be the best recorded part of a road system.</div><div><br></div><div>Residential streets often are not, nor tracks in the fields.</div><div>In old narrow urban districts more than 50% of the streets may be oneway roads – there you'd better tag oneway=no, if a section of a street is bidirectional.</div><div>In the outer suburbs and the scattered settlement around, some streets may have sidewalks but some not, some may be paved but some not, some may be lit but some not. The ratios may be 95%/5%, 50%/50%, 5%/95%, or anything in between. Such are classical conditions where you have to note "no" as well as "yes".</div><div><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><br>Date: Thu, 18 Dec 2014 17:14:08 +0100<br>From: Mateusz Konieczny <<a href="mailto:matkoniecz@gmail.com">matkoniecz@gmail.com</a>><br>To: "Tag discussion, strategy and related tools"<br><span class="Apple-tab-span" style="white-space: pre; "> </span><<a href="mailto:tagging@openstreetmap.org">tagging@openstreetmap.org</a>><br>Subject: Re: [Tagging] User:Ulamm/Mappers, evaluators and feedback<br>Message-ID:<br><span class="Apple-tab-span" style="white-space: pre; "> </span><<a href="mailto:CALDvra7Vp39=JhBEC25Qs0E52-6o__594uYPa4kcX37pRCUZpw@mail.gmail.com">CALDvra7Vp39=JhBEC25Qs0E52-6o__594uYPa4kcX37pRCUZpw@mail.gmail.com</a>><br>Content-Type: text/plain; charset="utf-8"<br><br>This advocates adding [oneway=no; toll=no] to nearly all roads (just<br>because some are with toll and oneway).<br>I consider this as a bad idea.<br><br>2014-12-18 15:28 GMT+01:00 Ulrich Lamm <<a href="mailto:ulamm.brem@t-online.de">ulamm.brem@t-online.de</a>>:<br><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><a href="https://wiki.openstreetmap.org/wiki/User:Ulamm/Mappers,_evaluators_and_feedback">https://wiki.openstreetmap.org/wiki/User:Ulamm/Mappers,_evaluators_and_feedback</a><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">This article is an attempt to write down basic rules of/for OSM<br></blockquote><blockquote type="cite">that had been forgotten to fix in the very beginning.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">I had started that page with an invitation on the discussion page to do<br></blockquote><blockquote type="cite">the move now done by Frederik Ramm, if anybody would disagree.<br></blockquote><blockquote type="cite">As you can see, there was a considerable discussion.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Therefore I dared to remove the original invitation after a month.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">If now still somebody considers anything of this short text wrong, please<br></blockquote><blockquote type="cite">tell it.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">Ulrich<br></blockquote><blockquote type="cite"><br></blockquote></span><br class="Apple-interchange-newline"></blockquote></div><br></body></html>