S-353
Overhead immediate exit sign on autopista or autovía to autopista or autovía
On an autopista or autovía, shows the destinations of the exit at the upcoming interchange when it leads to an autopista or autovía. It also shows the exit number and, where applicable, its letter.
Category: Direction signs
Source: General Traffic Regulations (RD 1428/2003), Annex I; designs per the official sign catalog (RD 465/2025)