AVUS

While normal for a road, it is unusually shaped for a race track as it is essentially two long straights in the form of a dual carriageway, with a hairpin corner at each end.

During the Great War works discontinued, and though Russian Army prisoners were temporarily employed in AVUS's construction, the track was still unfinished.

The circuit, including a gate building and several stands, was inaugurated during the first post-war International Automobile Exhibition (IAA) with a motor race on 24 September 1921.

At the time of opening, AVUS was 19.569 km (12.160 mi) long – each straight being approximately half that length, and joined at each end by flat, large-radius curves, driven counter-clockwise.

On 11 July 1926 the track played host to the first international German Grand Prix for sports cars, organised by the Automobilclub von Deutschland, the former KAC.

During the race, in heavy rain, two track marshals died when Adolf Rosenberger lost control and hit the indicator board and the timekeeper's box, with a third employee succumbing to his injuries in hospital a few hours later.

The Grand Prix was won by his fellow team-member, the so-far unknown Mercedes-Benz salesman Rudolf Caracciola, from Remagen, driving a private, eight-cylinder "Monza" Kompressor type.

The following events were won by Achille Varzi (1933) and Guy Moll (1934), to the great annoyance of the new Nazi rulers, who declared the victory of German drivers and cars a matter of national pride.

Furthermore, it was to be connected to the growing Reichsautobahn network in 1940 by extending it south towards the Berliner Ring, therefore the original hairpin at Nikolassee was demolished and replaced by a junction.

For post-war racing, the original extremely long straights were shortened by the introduction of a new south turn roughly in the middle (just before the Hüttenweg exit, where it can still be seen), reducing the track length to 8.300 km (5.157 mi).

This "Grand Prix of Berlin" was mainly a show dominated by the Mercedes-Benz W196 drivers Karl Kling (the winner) and Juan Manuel Fangio.

Finally AVUS hosted its only world championship Formula One race with the 1959 German Grand Prix on 2 August, won by Tony Brooks.

German driver and journalist Richard von Frankenberg had previously walked away from a similar spectacular crash at the same site, but Behra would have no such luck as his body impacted a flagpole head-first after he was flung from his car.

[citation needed] The round race control tower at the north end still remains with its prominent Mercedes-Benz and Bosch sponsorship insignia.

Comparison of AVUS track banking to two other tracks