First the good news. All the children on the bus are out of the hospital. The somewhat less good news is that four adults remain in the hospital.
The authorities remain perplexed at the cause of the crash. Post-crash inspection of the bus found it in good working order.
Fox 5 news had an interesting piece on the history of local crashes involving large commercial vehicles going through guardrails which segued into AAA's discussion of the inadequacy of guardrails overall. http://www.myfoxdc.com/dpp/news/maryland/aaa-calls-for-stronger-guardrails-after-md-crash-093010