S-575
Ten-kilometer post on roads outside the State network
Indicates the kilometer point, when it is a multiple of ten, of a road that is neither an autopista nor an autovía and belongs to a network other than the State network. Its color matches that road's category.
Category: Location signs
Source: General Traffic Regulations (RD 1428/2003), Annex I; designs per the official sign catalog (RD 465/2025)