Besides the motorway's main route, it has several branches that are variously numbered A1a, A1h, A1l and A1.1.

It was opened for the Swiss national exhibition of 1964.

After the construction of the third Baregg Tunnel tube,[clarification needed] the traffic jams in this area were reduced, but the Gubrist Tunnel remains with the old capacity as a new point of heavy traffic.

[clarification needed] [citation needed] The A1 motorway is connected via a taxiway at the hangar 5 with the airfield of Payerne Air Base and can, if necessary, used as runway for take off - and landing.

[1] Media related to A1 (Switzerland) at Wikimedia Commons