Bundesautobahn 100

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A 100
Bundesautobahn 100
Route information
Length	21 km (13 mi)
Existed	1958–present
Location
Country	Germany
States	Berlin
Highway system
Roads in Germany Autobahns List Federal List State E-roads
← A 99 → A 103

Bundesautobahn 100 (translates from German as Federal Motorway 100, short form Autobahn 100, abbreviated as BAB 100 or A 100) is an Autobahn in Germany.

The A 100 partially encloses the city centre of the German capital Berlin, running from the Wedding district of the Berlin-Mitte borough in a southwestern arc through Charlottenburg-Wilmersdorf and Tempelhof-Schöneberg to Neukölln. It connects with the Bundesautobahn 111 (A 111) at the Charlottenburg interchange, with the A 115 (the former AVUS) at the Funkturm junction, and finally reaches the A 113 at its southeastern terminus in Neukölln, all linking it with the outer Berliner Ring A 10.^[1] The route in most parts runs parallel to the tracks of the inner circle line (Ringbahn) of the Berlin S-Bahn.

The first section at western Kurfürstendamm was opened in 1958. According to the concept of a "car-friendly" city, the A 100 was then intended to become a ring road, but today a completion of the ring as an autobahn is no longer proposed. It is nonetheless still often called Stadtring ("city ring"). The section between the Funkturm and Kurfürstendamm interchanges is the busiest autobahn in Germany, with an average of 191,400 vehicles per day.^[2] Recently a southeastern extension to Sonnenallee and Treptower Park, currently under construction, has been the target of various protests.