S-351a
Overhead immediate exit signs on conventional or multilane road to autopista or autovía, with through route
On a conventional or multilane road, shows the through route of the road being traveled and the destinations of the exit at the upcoming intersection when it leads to an autopista or autovía.
Category: Direction signs
Source: General Traffic Regulations (RD 1428/2003), Annex I; designs per the official sign catalog (RD 465/2025)