Version mkgmap-r4713 was committed by gerd on Thu, 13 May 2021 fix check which detects if lines rules add or set special tag mkgmap:has-direction=true. Old code only found the case that the style checked if a line has the tag, as in mkgmap:has-direction=true {echotags "direction"} Don't invest too much time in this, maybe it will be reverted, the tag might not be the best way to pass the needed information. http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4713