<Table> Hindhead Tunnel <Tr> <Td_colspan="2"> South portal of the Hindhead Tunnel . October 2012 </Td> </Tr> <Tr> <Th_colspan="2"> Overview </Th> </Tr> <Tr> <Th> Location </Th> <Td> Hindhead, Surrey, UK </Td> </Tr> <Tr> <Th> Status </Th> <Td> Active </Td> </Tr> <Tr> <Th> Route </Th> <Td> A3 </Td> </Tr> <Tr> <Th_colspan="2"> Operation </Th> </Tr> <Tr> <Th> Work begun </Th> <Td> January 2007 </Td> </Tr> <Tr> <Th> Opened </Th> <Td> 29 July 2011 </Td> </Tr> <Tr> <Th> Owner </Th> <Td> Highways England </Td> </Tr> <Tr> <Th> Operator </Th> <Td> Highways England </Td> </Tr> <Tr> <Th_colspan="2"> Technical </Th> </Tr> <Tr> <Th> Length </Th> <Td> 1,830 m (1.14 mi; 6,000 ft) </Td> </Tr> <Tr> <Th> No. of lanes </Th> <Td> Two in each tunnel </Td> </Tr> <Tr> <Th> Operating speed </Th> <Td> <P> Speed limit: 70 mph (113 km / h) </P> Design speed: 120 km / h (75 mph) </Td> </Tr> </Table> <Tr> <Td_colspan="2"> South portal of the Hindhead Tunnel . October 2012 </Td> </Tr>

What is the speed limit through the hindhead tunnel