Spain’s traffic authority will begin testing dynamic speed limits on the AP-7 and AP-2 in Catalonia on October 1. Digital panels will change the posted limits as road or weather conditions shift, with speeds ranging from the usual 120 km/h to 60 or even 40 km/h. El Confidencial reports that the pilot is part of a broader Dirección General de Tráfico (DGT) push to improve road safety in real time.
The fixed 120 km/h cap will no longer apply unchanged on the test stretches. El Periódico reports that the AP-7 was selected because it is one of Spain’s busiest routes. The AP-2 section between Castelldans and Les Borges Blanques is known for thick fog and is expected to see the steepest speed reductions.
Traffic sensors and live cameras will monitor the routes, while algorithms process the data. If traffic jams or crashes occur, sudden fog can also prompt the system to lower speed limits, sometimes to 100 km/h, with further reductions to 80 or 60 km/h. In the worst conditions, speeds can drop to 40 km/h. Illuminated signs will display the limits, overriding the usual rules that drivers must follow. Motor16 notes that the standard 120 km/h limit remains, but electronic signs can lower it at any time.
The limits are temporary: when a crash clears or the weather improves, the system restores the normal speed. The AP-7 will be the basic test route, while the AP-2, particularly the fog-prone stretch between Castelldans and Borjas Blancas, is expected to see the biggest changes when visibility drops. La Dépêche reports that similar dynamic limits are already in use elsewhere in Europe to reduce accidents and manage heavy traffic.
Drivers will need to watch the digital panels above the road. The DGT plans to study how people respond before considering a national rollout, and has set no date for expanding the system beyond Catalonia. French and Spanish outlets have also highlighted the potential impact on cross-border traffic between France and Spain: drivers may not expect speed limits to change on familiar routes, making clear signage and public awareness impressive during the pilot.
The trial covers only two highways. If the system reduces accidents and keeps traffic moving, Spain could set the pace for dynamic road management in Europe. The DGT is testing and refining the technology before considering broader rules.
