Firefighters help as a tour bus is towed out of a drainage ditch after the bus went off the shoulder of an Interstate 10 off-ramp in Baldwin Park, Calif. on Monday Dec. 23, 2013. The tour bus heading back from a Southern California casino crashed on a freeway east of Los Angeles early Monday, injuring 13 people, authorities said.
In the past year, at least 10 people were killed -- and nearly 200 injured in tour bus crashes in Southern California.
Many of those accidents involved so-called casino buses.
The buses -- and their operators -- are loosely regulated.
This morning, in the first of two stories, KPCC's Ben Bergman reports on the casino bus boom.