Ukrainian road sign 1.40 "End of the road with an improved surface" according to DSTU 4100:2014. According to DSTU 4100:2021 this sign was superseded by a new one under the name "Change of surface".
https://zakon.isu.net.ua/sites/default/files/normdocs/dstu_4100_2014.pdf
Originally created by Syntaxtrees, modified by WWBM