On many road signs along the route, the characteristic green octagonal marker of the Italian motorways still bears the letter A without number.

The motorway was built by its current operator ANAS and finished in 1959[2] at the same time as the entry into service of the Airport itself (which took place in different phases between 1956 and January 1961).

[3] On the occasion of the Great Jubilee of 2000, the motorway was enlarged with the construction of the third lane between the Grande Raccordo Anulare and the Airport, with the exception of a small stretch of approximately 4 kilometres (2.5 mi) towards Rome.

Orange light lamps with red LEDs on the sides of the motorway were also installed to increase visibility.

[6] These temporary flat-rate increases were subsequently eliminated, starting from 4 August 2010, following some appeals lodged by local authorities to the Lazio and Piedmont Regional Administrative Courts (TAR), as well as a Decree of the Council of State: in fact, at the junctions and barriers where toll payment was required, users who did not continue on the motorways would also had to pay for their use, while, according to the judges, the toll cannot be a tax but the payment for the actual use of a service.