an ambulance and car collided at lou elling and hisparing. this is in san leandro. we'll continue to follow this story and bring you more information as we get it. >>> our other top story this afternoon, thousands of uc workers on strike, the issue, salaries. >>> jessica flores is live at uc berkeley where workers have been picketing since early this morning. >> reporter: we have been out here with these workers all morning long. take a look, dozens of them on the picket line now wearing green t-shirts in solidarity. a lot of signs here. and one thing to note, this is finals week for students. so those students aren't having their cafeteria workers, guards, custodians, they're all out here on strike. >> we are not second class workers. >> for this uc berkeley custodian, today is a family affair. her son and sister are also on the front line of the uc strikes. >> we're the backbone of this university. and we want them to understand that we have families too. we struggle with our families everyday. >> some 50,000 workers across 10 uc campuses are off the job. over wha