Now, to the dangerous and sometimes deadly stunt known as skateboard bombing. Skaters zooming at high speed down steep hills. And los angeles is now imposing new restrictions after two teens were... See More
Now, to the dangerous and sometimes deadly stunt known as skateboard bombing. Skaters zooming at high speed down steep hills. And los angeles is now imposing new restrictions after two teens were killed. Abc's neal karlinsky has the story. Reporter: There's skateboarding. And then, there's skate bombing. It is an adrenaline-loaded high-speed favorite of some skateboarders, who rocket down the steepest neighborhood streets they can find. Often running stop signs and praying cars don't get in their way. I like the rush. It feels good. My adrenaline starts pumping. Reporter: It doesn't always end well. A year ago, a guy actually ran into the wback of my car. Reporter: While some skate bombers show in dramatic fashion they can and do stop at intersections, others speed 40 miles per hour on open roads, with no warning to motorists and no margin for error. Here we go, baby. Reporter: This morning, after the deaths of two teenage skate bombers in less than a year, the l.A. City council has voted to outlaw it. Giving police the power to confiscate skateboards and impose fines. That includes a 10-mile-per-hour speed limit and no hanging on to cars. Kyle chin, an experienced skateboarder, showed us the pads heuses. And says most riders choose where and when to ride. You made the comparison to skiing. But there's no cars coming at you. When you compare it to skiing or other styles of skateboarding, we don't have environments that are built for our use. Reporter: He says the new law won't change anything. Bottom line, the law is not going to stop you? Probably not. My passion, it's something that I love. I'm going to keep on doing it. Reporter: For "good morning america," keel karlinsky, abc news, santa monica, california. They have to be careful out there.
This transcript has been automatically generated and may not be 100% accurate.