The new Regulation that will regulate roadside assistance will force us to replace the triangles with which we now signal breakdowns or accidents on the road with a light signal. We will use it from July 1, 2021, although we will be able to continue using the triangles until January 1, 2026. From that date, only the new light signal with geolocation will be allowed. Here we explain how it works. You have more information at this link.
https://revista.dgt.es/es/multimedia/infografia/2021/03MARZO/0317-V-16-Info.shtml