S-561
Institutional sign on conventional or multilane road
Shows the owner, number, and name of the conventional road or multilane road being entered. If the road has no name, the sign shows the text “Carretera” followed by the road identification box.
Category: Location signs
Source: General Traffic Regulations (RD 1428/2003), Annex I; designs per the official sign catalog (RD 465/2025)