A bus packed with Afghan civilians hit a roadside bomb near the southern city of Kandahar Tuesday, killing 30 people and wounding 39, underscoring the dangers civilians face as the eight-year war turns increasingly violent. Militants are planting more roadside bombs than ever. The explosives are intended to kill U.S., NATO and Afghan troops but kill far more Afghan civilians than they do soldiers. "The enemies of Afghanistan are planting mines on the main highway and killing innocent women and children," said Sardar Mohammad Zazai, Kandahar province police chief. The bus hit the bomb on the western outskirts of Kandahar city, in a militant-controlled district called Maiwand. Nine women and seven children were among the 30 dead, Zazai said. Another 39 were wounded.