MannheimMannheim (ˈmanhaɪm; Palatine German: Mannem or Monnem), officially the University City of Mannheim (Universitätsstadt Mannheim), is the second-largest city in the German state of Baden-Württemberg, after the state capital of Stuttgart, and Germany's 21st-largest city, with a 2021 population of 311,831 inhabitants. The city is the cultural and economic centre of the Rhine-Neckar Metropolitan Region, Germany's seventh-largest metropolitan region with nearly 2.4 million inhabitants and over 900,000 employees.
BonnBonn (bɔn) is a federal city in the German state of North Rhine-Westphalia, located on the banks of the Rhine. It has a population of over 300,000. About south-southeast of Cologne, Bonn is in the southernmost part of the Rhine-Ruhr region, Germany's largest metropolitan area, with over 11 million inhabitants. It is a university city, was the birthplace of Ludwig van Beethoven and was the capital of West Germany from 1949 to 1990. Bonn was the seat of government of reunited Germany from 1990 to 1999.
Dual carriagewayA dual carriageway (BrE) or a divided highway (AmE) is a class of highway with carriageways for traffic travelling in opposite directions separated by a central reservation (BrE) or median (AmE). Roads with two or more carriageways which are designed to higher standards with controlled access are generally classed as motorways, freeways, etc., rather than dual carriageways. A road without a central reservation is known as a single carriageway regardless of how many lanes there are.
Bundesautobahn 3is an autobahn in Germany running from the Germany-Netherlands border near Wesel in the northwest to the Germany-Austria border near Passau. Major cities along its total length of 778 km (483 mi) include Oberhausen, Duisburg, Düsseldorf, Leverkusen, Cologne, Wiesbaden, Frankfurt, Würzburg, Nuremberg and Regensburg. The A 3 is a major connection between the Rhine-Ruhr area and southern Germany, resulting in heavy traffic. Consequently, large parts have three lanes (plus a hard shoulder) in each direction, including a 300 km (187.
Speed limitSpeed limits on road traffic, as used in most countries, set the legal maximum speed at which vehicles may travel on a given stretch of road. Speed limits are generally indicated on a traffic sign reflecting the maximum permitted speed, expressed as kilometres per hour (km/h) or miles per hour (mph) or both. Speed limits are commonly set by the legislative bodies of national or provincial governments and enforced by national or regional police and judicial authorities.