To determine the traffic development and provide the traffic volumes on the federal trunk roads – motorways and national roads – traffic counts are carried out nationwide every 5 years. In 2015, such a road traffic count (RTC 2015) took place. For the first time in some federal states the counts were not carried out exclusively manually – as in the past – but on single lane national roads electronically with lateral radar sensors. The federal states had the option to count the subordinate network (state and county roads) and to get these data evaluated within the framework of the RTC 2015. Not all states made use of this possibility, so that no universally valid statements can be made for these road types nationwide. The report contains the annual average daily traffic (AADT) and annual kilometrages calculated from the individual results, differentiated according to vehicle types and road categories for the federal territory as a whole and for each state, as well as explanations on the calculation of the AADT and kilometrage statistics. They are supplemented by a few remarks on changes in the mean AADT values and annual mileage compared to the RTC 2010 and its predecessors. The tables with the individual results of the counting stations on the federal trunk roads are available for download on the BASt-homepage in PDF- and Excel-format. (Author/publisher)
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