<Tr> <Td> Vanuatu </Td> <Td> RHT </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Venezuela </Td> <Td> RHT </Td> <Td> </Td> <Td> LHT </Td> <Td> The Caracas Metro uses RHT . </Td> </Tr> <Tr> <Td> Vietnam </Td> <Td> RHT </Td> <Td> </Td> <Td> LHT </Td> <Td> Became RHT as French Indochina . </Td> </Tr> <Tr> <Td> Yemen </Td> <Td> RHT </Td> <Td> 1977 </Td> <Td> </Td> <Td> South Yemen, formerly the British colony of Aden, changed to RHT in 1977 . A series of postage stamps commemorating the event was issued . North Yemen was already RHT . </Td> </Tr>

Who decided to drive on the right side of the road