<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I have not heard of “whispering asphalt” but I know that in some areas of the state I live in they have been using a porous asphalt on roads to provide better traction during rain storms.<div class=""><br class=""></div><div class="">So I am not sure if the current uses of “asphalt:type=porous” would be to indicate pavement designed for good traction in the rain or if it was for making a less noisy road.</div><div class=""><br class=""></div><div class="">From taginfo, it looks like asphalt:type has only been used a few times and always with the value of porous. And it looks like they are all in the one area you found with your overpass query. Perhaps the original mapper could be contacted to see what they were trying to describe.</div><div class=""><br class=""></div><div class="">Cheers!</div><div class="">Tod<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On May 2, 2019, at 12:55 PM, <a href="mailto:amilopowers@u-cloud.ch" class="">amilopowers@u-cloud.ch</a> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="protected-part"><div class="protected-title">Signed PGP part</div><div class="protected-content"><div class="">Hello<br class=""></div><div class=""><br class=""></div><div class="">I used to live in Fribourg, Switzerland where they put "whispering asphalt" on one of the main roads in order to prevent noise. You can barely hear an EV now, but that is another story.<br class=""></div><div class=""><br class=""></div><div class="">Since we have quite a lot of discussions about noise pollution I thought it might be a good idea to implement a tag for that.<br class=""></div><div class=""><br class=""></div><div class="">surface=whispering_asphalt or surface=silent_asphalt came to my mind but I don't know what the official term for that aspahlt in English is. In German we call it "Flüsterbelag" or "Flüsterasphalt".<br class=""></div><div class=""><br class=""></div><div class="">Then I found on Overpass-Turbo someone that tagged "asphalt:type=porous". [1] Since I don't work in that area I don't know for sure if this is the same thing as I imagine and I found only one Wikipedia article in German [2] about that asphalt I mean.<br class=""></div><div class=""><br class=""></div><div class="">I personally prefer one of my first ideas, since I hate to add another key/value if I can say it in one.<br class=""></div><div class=""><br class=""></div><div class="">I look forward to hear your thoughts and comments.<br class=""></div><div class=""><br class=""></div><div class="">Regards<br class=""></div><div class="">Ueli (amilopowers)<br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">[1] <a target="_blank" rel="noreferrer nofollow noopener" href="https://overpass-turbo.eu/s/Iky" class="">https://overpass-turbo.eu/s/Iky</a> (click "run")<br class=""></div><div class="">[2] <a href="https://de.wikipedia.org/wiki/Asphalt#Offenporiger_Asphalt" class="">https://de.wikipedia.org/wiki/Asphalt#Offenporiger_Asphalt</a><br class=""></div><div class=""><br class=""></div><div class="protonmail_signature_block"><div class="protonmail_signature_block-user"><div class="">----<br class=""></div><div class="">Sent from <a href="https://protonmail.ch/" class="">ProtonMail</a>, encrypted email based in Switzerland.<br class=""></div></div><div class="protonmail_signature_block-proton protonmail_signature_block-empty"><br class=""></div></div><div class=""><br class=""></div></div></div><br class=""><iframe class="untrusted-content-test" scrolling="auto" width="200" height="20" style="border:none;display:block;overflow:auto;" data-src="data:text/html;charset=UTF-8;base64,PGlmcmFtZS1jb250ZW50Pl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fPEJSPlRhZ2dpbmcgbWFpbGluZyBsaXN0PEJSPlRhZ2dpbmdAb3BlbnN0cmVldG1hcC5vcmc8QlI+aHR0cHM6Ly9saXN0cy5vcGVuc3RyZWV0bWFwLm9yZy9saXN0aW5mby90YWdnaW5nPEJSPjwvaWZyYW1lLWNvbnRlbnQ+" sandbox="allow-scripts"></iframe></div></blockquote></div><br class=""></div></body></html>