The Autostrada A4, or Autostrada Serenissima ("Serenissima motorway"), is an autostrada (Italian for "motorway") 523.1 kilometres (325.0 mi) long in Italy located in the regions of Piedmont, Lombardy, Veneto and Friuli-Venezia Giulia which connects Turin and Trieste via Milan and Venice crossing the entire Po Valley from west to east.

Italy was the first country in the world to build motorways reserved for fast traffic and motor vehicles only. [5][6] The Autostrada dei Laghi ('Lakes Motorway'), the first built in the world, connecting Milan to Lake Como and Lake Maggiore, and now forms the A8 and A9 motorways, was devised by Piero Puricelli and inaugurated in 1924. [6]

The Autostrada A4, or Autostrada Serenissima, is an autostrada (Italian for "motorway") 523.1 kilometers (325.0 mi) long in northern Italy which connects Turin and Trieste via Milan and Venice crossing the entire Po Valley from west to east.

L'autostrada A4 Torino-Trieste, chiamata anche Autostrada Serenissima, è un'autostrada italiana che collega Torino a Trieste [3], attraversando da ovest a est l'intera pianura padana, passando per Milano e Venezia.

Traffico A4 in tempo reale, viabilità autostrada A4. Tutte le notizie e gli aggiornamenti su code, cantieri, chiusure, incidenti ed eventi meteo per viaggiare informati.

The most frequently used paper size is A4 measuring 210 by 297 millimetres (8.27 in × 11.7 in). The standard dimensions are rounded to the nearest millimetre.

The Autostrada map shown below shows all the major toll roads or motorways in Italy. It is interactive. By clicking or touching the autostrada number, you'll find out more about that fast route through Italy. On Italy's toll roads, you'll take a ticket and pay when you exit the autostrada or hit a tangential road near a very large city.

The A4 is considered the busiest motorway in Italy taking into account number of vehicles per km. The route represents an important East-West corridor for traffic travelling between the Iberian peninsular and the Balkans.

Detailed clear large road map of Italy showing major roads routes and directions to cities, towns, villages and regions.

The italian motorway A4 »Autostrada A4« is a motorway between Turin in the west and Triest on the east side of northern Italy. The motorway A4 is about 522 kilometers long. The important cities on your way on this motorway A4 in Italy are Turin, Milan, Venice, Verona, Sistiana and Triest.