how to understand this sentence
I read the passages on line:Those who support laws that punish left-lane hogs say that such measures return the roads to order. “Let’s be clear: Speeding remains just as illegal as it has been,” said state representative Jud McMillin, one of the bill’s sponsors. “This is about safety and common courtesy. We should use the roads the way they were designed to be used.”
“What’s more dangerous than a speeder on the highway than someone who weaves, or someone who has to come to a dramatic stop,” Ober said.
I have never seen two "than"s in one sentence, and I am confused about "than a speeder on the highway than someone who weaves", how to understand "than...than..."? Is it a fixed structure?