According to Brazilian news reports, the accident occurred at 7 AM on November 22, 2012 when the bus driver attempted to drive through the crossing while ignoring the horn from an oncoming train. Luckily, there were no students aboard the bus, although the driver and a bus monitor both suffered minor injuries.

News Link: http://g1.globo.com/sp/mogi-das-cruzes-suzano/noticia/2012/11/trem-arrasta-onibus-escolar-por-100-metros-em-suzano.html