Devastating road accidents on this scale are common in Afghanistan, where drivers often ignore traffic laws on poorly maintained narrow roads that wind through steep mountain gorges.
Insurgents attacked a mud fort being used as a jail in central Afghanistan on Monday, killing police officers and releasing hundreds of inmates, of whom over 350 are still on the run.
Neither US officials nor their Afghan counterparts are really sure whether thousands of small arms can be accounted for.
Round two election day has already seen more attacks than April. Prior to polls opening, the capital was rocked by four attacks.