This 25-kilometer (15.5-mile) long, toll-free autostrade, which connects the periphery of Rome with Leonardo da Vinci (Fiucimino) Airport, has a secret designation of A-91 that was assigned during the early 1990's. This route can be described best in two separate sections:
From the airport east to the Gran Raccordo Anulare (GRA) Autostrade (also known as the "Ring Road"), the Rome-Fiucimino Autostrade is a freeway designed to modern safety standards. This six-lane section has a speed limit of 100 km/h (62 MPH).
East of the "GRA," the Rome-Fiucimino Autostrade lacks basic safety characteristics such as shoulders and acceleration-deceleration lanes. Capacity is reduced from six lanes to four lanes along this section. Because of the low safety standards (most likely reflecting its construction prior to World War II), sharp curves, and reduced capacity, speeds are limited to 70 km/h (43 MPH).
Surprisingly, congestion did not appear to be a problem on this autostrade. This corridor is well served by an express train connection between central Rome (Termini) and the airport.
For more information on the autostrade network, please visit the official Autostrade web site or Eugenio Merzagora's unofficial autostrade web site.