The main change is the removal of the left-turn lane. Drivers heading towards Sant Vicenç dels Horts who wish to enter Sant Roc must continue to the les Ovelletes roundabout to make a U-turn.

Technical simulations showed that the left turn accounted for only 1% of peak-hour traffic but significantly disrupted overall flow. The L61 bus line will also follow this new route, adding 1.5 km to its journey.