<Tr> <Td> United States </Td> <Td> 7.02 </Td> <Td> 3.38 </Td> </Tr> <P> For example, a person yearly traversing 15,000 kilometres (9,300 mi) on regular roads and 10,000 kilometres (6,200 mi) on motorways has an approx. 1 in 11,000 chance of dying in a car accident on a German road in any particular year (1 in 57,000 on an autobahn), compared to 1 in 3,800 in Czech Republic, 1 in 17,000 in Denmark, or 1 in 7,200 in the United States . </P> <P> However, there are many differences between countries in their geography, economy, traffic growth, highway system size, degree of urbanization and motorization, and so on . </P> <P> The Federal government does not regularly measure or estimate travel speeds . One study reported in a transportation engineering journal offered historical perspective on the increase in travel speeds over a decade, as shown below . </P>

What part of the autobahn has no speed limit