It intersects with the A1, A8, A13 and A14 motorways.
The St. Gotthard Tunnel lies on the way. Traffic jams stretching for kilometres on end are frequently found on both entrances of the tunnel, but more frequently on the northern flank. The difficulty with driving through the St. Gotthard tunnel is that it is a motorroad tunnel with one lane per direction, but without a central reservation. So far, plans for a second Gotthard tunnel have been ditched or have been rejected.
This is one of the most driven-on motorways in Switzerland.
Listed are exits heading south as of Basel Symbols: ↗ = exit (↘ = exit only; â†' = only when heading for Chiasso; ↠= only when heading for Basel); ⇆ = main interchange; S = service area